Material Datasheet DENSE AND MEDIUM DENSE SOLID … · With the CEMEX Dense and Medium Dense...

With the CEMEX Dense and Medium Dense Coursing Bricks, you can be assured of getting the best range of masonry solutionsdesigned to suit a wide range of building applications. QualityAssured manufacture ensures that CEMEX Dense and MediumDense Coursing Bricks are manufactured and tested inaccordance with the relevant sections of EN 771-3.

CEMEX UK Building Products LtdCEMEX House, Evreux Way, Rugby, Warwickshire CV21 2DT

DENSE AND MEDIUM DENSESOLID COURSING BRICKS

Material Datasheet

Product SpecificationsCOMPOSITION : Dense Aggregate and cement or blended medium dense

aggregate and cementDENSITY : Dense - Average 2000 kg/m3

Medium Dense - 1400 kg/m3

COMPRESSIVE STRENGTH : 7.4 N/mm2 minimum average for dense units7.4 N/mm2 minimum average for medium dense units

DRY WEIGHT : 2.8 kg approx for 100mm dense units2.0 kg approx for 100mm medium dense units

WATER ABSORPTION : 6-8% approx for dense units10-15% approx for medium dense units

MOISTURE MOVEMENT : Less than 0.5mm/m (dense)Less than 1.0mm/m (medium dense)

THERMAL CONDUCTIVITY : 1.29W/mK@3%m/c for dense units0.46W/mK@3%m/c for medium dense units

THERMAL RESISTANCE : 0.08m2 K/W@3%m/c for dense units0.22m2 K/W@3%m/c for medium dense units

Features and Benefits• Designed to be used for all types of construction above and below ground in conjunction with dense

aggregate and medium dense aggregate blocks• Can endure repeated cycles of attack from rain and frost• Minimises cutting of blocks onsite, in return reducing waste, cost and time

®

w w w . c e m e x . c o . u k / r e a d y b l o c k

Length

Size available (±2mm)WidthHeight

ReadyBlock® Sales Office:North: 01236 822461South: 01298 22244

215 65 100

For more information on CEMEX visit www.barbourproductsearch.info

http://www.barbourproductsearch.info/cemex-uk-building-products-comp212427.html

Delivery and StorageWhere requested packs can be delivered shrink wrapped.All packaging should be disposed of carefully inaccordance with local environmental requirements. If possible, delivered blocks should be stacked carefullyonto a prepared, clean, firm area to minimise soiling anddamage and in planned locations on the site. This reducesthe double-handling of the bricks.They should also beprotected from inclement weather and passing vehicles.Allow air to circulate through and around the stacks.These precautions will reduce the likelihood of limebloom, shrinkage and movement. Materials used inconjunction with concrete facing bricks should also be stored under protection.

Health and SafetyCare and attention should be given to the working area tominimise accidents. Further information may be found inHSE Construction Sheet 37-Handling Building Blocks.Safe lift/build heights will vary dependant upon the blocktype, thickness, etc. Weather conditions can also affect liftheights and restrictions may be needed due to forecastedwindy weather. Generally, lift heights should not exceed 6full block courses in a single working day. For cavity wallconstruction, the 2 leaves should be built up together and the difference in leaf height, at any stage duringconstruction, should generally not exceed 675mm. A separate material safety datasheet for precast concrete products is available from CEMEX.

BricklayingLaying, bedding and jointing: The first course ofbricks should be laid to a gauge rod or dry with timberjoint spacers to ensure accurate setting out. Too muchsuction should be overcome by increasing the workabilityof the mortar within the provisions of BS5628: Part 3.Avoid mixing mortar variations and use the mortarspecified by the designer. Perpendicular and bed jointsshould be fully filled. ‘Tipping’ and ‘furrowing’ will facilitatewater ingress, ‘furrowing’ can also reduce the compressivestrength of the walling. The specified joint profile shouldbe formed after allowing the mortar to harden slightly.Tooling is recommended to compact the joints, improveweather resistance and reduce shrinkage in the mortar.‘Bucket Handle’ is generally the most efficient joint profile.Recessed pointing is not recommended, particularly inareas of severe exposure. Keep bricks clean during layingand avoid smearing with mortar from the joints as this canbe difficult to remove. Joint finishing on a wet day requiresextreme care.

Bonding: Bonding patterns should be maintained atopenings. Any bonds that are broken can increase the risk of cracking.

Cutting and Chasing: Where cutting of blocks isrequired on-site, the use of a central cutting area shouldbe encouraged. On facing work, mechanical means shouldbe adopted to preserve a true arris. Wet cutting will help tomaintain the appearance of the bricks, but if this method isused the bricks should be hosed down immediately aftercutting and dried out prior to laying. Chases generallyshould not exceed one-third of the thickness of the wall invertical chasing and not deeper than one-sixth of the wallin horizontal chasing. Timber laths should be used asguides when using mechanical means. Goggles and dustmust be used when chasing concrete bricks.

Mortar: Above d.p.c and below parapets a 1:1:6 cement;lime; sand mortar or equivalent is suitable. Mixes shouldbe used within two hours of mixing, other than in the case of retarded mortars where the manufacturer’srecommendations should be observed, after two hours the mortar should be discarded.

Different types and strengths of mortar have differingproperties. In Class 3 sulphate conditions SRPC mortarshould be used. Mixing methods must ensure consistencyof colour and strength. Use only BS approved additives to improve workability. Mixing methods must ensureconsistency of colour and strength. Use gauge boxes or similar when missing.

Damp Proof Course: Damp Proof Course materialsmust be the correct width for the job, i.e; at least the width of the wall. On external walls a projection of 6mm is recommended at the external leaf. It is essential thatd.p.c’s are bedded above and below to avoid forming aslip plane under movement. A lap of at least 150mmshould be formed at joints in lengths of d.p.c.

Finished WorkProtection of finished work: All brick work should be protected from inclement weather and other on-sitepractices. Suitable protective sheeting should be placedover the block work and firmly tied into place. Care mustbe taken to protect the work from frost damage or rapiddrying out.

Movement Control: Unless movement control has been catered for at the design stage by discrete panelformations, it may be achieved through the provision of control joints and / or bed reinforcement. If controlprovisions are not indicated by the designers, it isadvisable to raise this point with them before workcommences. Where bed reinforcement is required as analternative or supplement to control joints to reduce therisk of cracking, it should be bedded in the horizontalmortar joints of the brick work.

Plastering: Areas of brickwork to be plastered orrendered should have raked joints to form a key for thespecial finish. For optimum adhesion a plater bondingcoat or similar should be used. Render should be appliedin accordance with BS5362. A spatterdash coat maybenecessary for good adhesion. If so, this should be onepart cement : 2-3 parts sand applied before the undercoat.

Rendering: On concrete bricks the render mix should be 1:1.5:4.5 or equivalent, using clean sand. In all cases of two - or three-coat rendering, the final coat should be a weaker mix than the undercoat, or same mix but thinner.

Painting: Smooth faced bricks are suitable for paintingwith alkali-resisting paints, especially plastic emulsions.Brickwork should be dry and free from dust, limebloom,grease and other detritus. Oil based paints should be avoided.

SustainabilityAt CEMEX our environment matters, and the thermal mass of our ReadyBlock® range not only could reduce the need for air-conditioning in the summer but could also reduce theconsumption of winter heating fuel by capturing solar gains.

FAQ’sQ.What is the U value (thermal performance)

of Course Bricks?

A. Individual bricks do not have U Values. A U Value is determined by the type and thickness of each of the elements used to construct the wall, includingairspaces. Extensive thermal insulation data is given in BRE Special Digest (SD4) ‘Masonry walls and beamand block floors’ available free of charge from CBA,alternatively, call our ReadyBlock® Helpline Tel: 0800 667 827.

Q.What is the life expectancy of aggregate brick work?

A. It has been shown over a period of many decades that if protected from aggressive chemical or abrasivesituations, concrete brick work does not deterioratewith time.

For more information contact our ReadyBlock® HelplineTel: 0800 667 827.

The information contained in this publication was accurate at the time of production, howeverCEMEX reserves the right to introduce modifications or changes to detail at any time, as part of apolicy of continuous improvement.

This paper is produced from pulp sourced from properly managed sustainable forests, iselemental chlorine free, uses up to 20% best white waste and is totally biodegradable.

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Material Datasheet

Product SpecificationsCEMEX READYBLOCK® TO BS EN 771–3:2003 ‘Aggregate Concrete Masonry Units Category 1 (dense and light-weight aggregates)’CATEGORY : AGGREGATE CONCRETE MASONRY UNITDIMENSIONAL TOLERANCES : Category D1 (+3mm, -5mm)

Flatness No Performance DeterminedPlane Parallelism No Performance Determined

CONFIGURATION : For more information on void configuration, please contact your nearest sales office.

COMPRESSIVE STRENGTH : Mean 3.6 N/mm2, 7.3 N/mm2

MOISTURE MOVEMENT COEFFICIENT : = < 0.5 mm/mBOND STRENGTH : Fixed Value, 0.15N/mm2

REACTION TO FIRE : Class A1WATER ABSORPTION : No Performance DeterminedWATER VAPOUR PERMEABILITY(EN 1745) : 5/15 µGROSS DRY DENSITY : 100mm width = 1640 kg/m3

140mm width = 1460 kg/m3

NET DRY DENSITY : 1960 kg/m3

THERMAL RESISTANCE : 100mm width = Int, 0.11 m2 K/W Ext, 0.10 m2 K/W140mm width = Int, 0.16 m2 K/W Ext, 0.15 m2 K/W

DURABILITY AGAINST FREEZE-THAW : No Performance DeterminedDANGEROUS SUBSTANCES : Information on dangerous substances will only be given when

and where required and in the appropriate form.

Features and Benefits• Reduced unit weight for ease of handling• Reduced floor/foundation loadings• Available either open textured to provide an excellent medium for surface finishes or close textured for painting

®


With the ReadyBlock® range of Dense and LightweightAggregate Blocks from CEMEX, you are assured to find thebuilding solution you need. Our blocks can be used withconfidence in a wide variety of internal and externalapplications. Our quality assured manufacture ensures thatReadyBlock® units are of a consistent and superior quality tomeet the requirements of all European and British standards.

Length

Sizes available (in mm)WidthHeight

15.5 19.3

16.0 19.9

Block Weights (kg)*

Dry

3% Moisture Content

*These figures are a national average and variations may occur geographically,please contact your nearest Sales Office for more precise block weights.


440 215 100 140

100 140

CELLULAR DENSE READYBLOCK®

STANDARD AND CLOSE TEXTURED FINISH


Delivery and StorageBlocks are normally delivered to site in banded packs oncrane-offload road vehicles. Where requested packs canbe delivered shrink-wrapped and/or palletised to aidsubsequent site movement activities. All packagingshould be disposed of carefully in accordance with localenvironmental requirements.If possible, delivered blocks should be stacked in plannedlocations on the site. This reduces the double-handling ofthe blocks.Packs should be stacked carefully onto a prepared, clean,firm area to minimise soiling and damage. They shouldalso be protected from inclement weather and passingvehicles. Allow air to circulate through and around the stacks.

Health and SafetyCare and attention should be given to the working area tominimise accidents. Further information may be found inHSE Construction Sheet 37-Handling Building Blocks.Safe lift/build heights will vary dependant upon the blocktype, thickness, etc. Weather conditions can also affect liftheights and restrictions may be needed due to forecastedwindy weather. Generally, lift heights should not exceed 6full block courses in a single working day. For cavity wallconstruction, the 2 leaves should be built up together andthe difference in leaf height, at any stage duringconstruction, should generally not exceed 675mm.A separate material safety datasheet for precast concreteproducts is available from CEMEX.

BlocklayingGeneral Construction: The building of masonry walling should be to the workmanship guidance given in BS 8000-3.Walls Below DPC: Cellular Dense Blocks can be used below DPC and ground level as noted in Table 12 of BS 5628-3.Laying in cold weather conditions: Blocks shouldnot normally be laid when the temperature is at or below3°C and falling or 1°C and rising.Laying: Cellular blocks should be laid on a full bed ofmortar and the cross/perpend joints fully filled. Whennecessary, adjust the consistency of the mortar to suit thesuction of the blocks.Bond: Blocks should be laid to achieve a good bond,normally not less than one quarter the block length. In certain situations, consideration should be given to theaddition of bed joint reinforcement.Cutting and Chasing: Where cutting of blocks isrequired on-site, the use of a central cutting area shouldbe encouraged. Each pack of blocks contains a smallnumber of ‘splitter’ blocks which contain a narrow centralslot to aid splitting into two halves. Due to the internalvoids, cellular blocks are not suitable for chasing.Jointing: Mortar joints should be struck off as workproceeds. Where subsequent rendering or plastering is totake place, then the joints should be slightly raked out toact as a mortar key. Flush joints are recommended forfacing work. Lightly tooling the joints highlights thearrises of the blocks and hence the coursing, scale andappearance of the finished wall. Raked joints should beused with caution.

Use in Sulfate Soils: Dense Cellular Blocks can beused in chemically aggressive ground conditions up to &including Class DS-3 as detailed in BRE Special Digest 1.Mortar: Mortar should be specified in accordance withCl. 5.7 of BS 5628-3. To limit the visual impact ofshrinkage cracking, the weakest mortar specificationappropriate to the structural design should be chosen.

Finished WorkProtection of finished work: All blockwork should beprotected from inclement weather and other on-sitepractices. Suitable protective sheeting should be placedover the blockwork and firmly tied into place. Care mustbe taken to protect the work from frost damage or rapiddrying out.Movement Control: After construction, buildings aresubject to small dimensional changes due to settlement,temperature change, moisture movement & carbonation.To account for this, movement joints should be providedin accordance with the recommendations of BS 5628: Part 3. Generally, they are required at intervals of 6-8m forexternal work. Movement joints are not normally requiredfor basic domestic dwellings. Consideration for thelocation of movement joints should be given:

• At changes in wall height or thickness

• At changes of loading conditions

• At abutments of walls and columns and junctions ofdissimilar materials

• To align with movement joints in concrete floor slabs

• Between 1m & 3m from a corner

• At locations of recesses & openingsIn areas of concentrated stress, such as above and belowopenings, consideration should be given to the use ofmortar joint bed reinforcement.Render: All work should conform to recommendationsstated in BS EN 13914-1- External Rendering.In conditions of severe exposure, 3 coat work isrecommended with a total thickness of 20mm.Allow adequate drying time between finishes or coats.Plastering: All work should conform to therecommendations stated in BS EN 13914-2:2005 - InternalPlastering. The surface of Cellular Dense ReadyBlock®

provides a good key for all types of plaster. Dry-liningsystems are compatible with the ReadyBlock® range.Painting: Standard Finish Cellular ReadyBlock® are notintended to be directly painted. Where a paint finish isrequired a plaster or render finish should first be applied.Alternatively a Close Textured Cellular ReadyBlock® canbe specified in which case two coats of alkali – resistingmasonry paint is recommended, applied after the masonryhas dried out. Before application any signs ofefflorescence or other surface staining must be removed. Fixing: The Cellular ReadyBlock® range is suitable for most types of lightweight fixings, masonry nails, plugs & screws. Heavy items require support from ‘built in’ anchorages.Efflorescence: Concrete products with high cementcontent may suffer the temporary phenomenon ofefflorescence. This is not detrimental to the performanceof the product and no responsibility can be accepted forits occurrence.


FAQ’sQ.What is the U value (thermal performance) of

ReadyBlock®?A. Individual blocks do not have U Values. A U Value

is determined by the type and thickness of each of the elements used to construct the wall, includingairspaces. Extensive thermal insulation data is given in BRE Special Digest (SD4) ‘Masonry walls and beamand block floors’ available free of charge from CBA,alternatively, call our ReadyBlock® Helpline Tel: 0800 667 827.

Q.What is the life expectancy of aggregateblockwork?

A. It has been shown over a period of many decades thatif protected from aggressive chemical or abrasivesituations, concrete blockwork does not deterioratewith time.

Q.Are Cellular Dense ReadyBlock® suitable forthe construction of party walls as regardssound insulation?

A. These blocks are not recommended for party wallconstruction.

Q.Are Cellular Dense ReadyBlock® suitable for all categories of construction?

A. Cellular blocks can be used from a structural point ofview for housing, but due to the high levels of cutting& services installation; they are rarely used. Cellularblocks are generally specified where a dense aggregateblock is required but less weight is advantageous.




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2000 SOLID DENSE READYBLOCK®

CLOSE TEXTURED FINISH

Material Datasheet



COMPRESSIVE STRENGTH : Mean 7.3 N/mm2, 10.4 N/mm2, 17.5 N/mm2, Other strengths available on application


REACTION TO FIRE : Class A1WATER ABSORPTION : No Performance DeterminedWATER VAPOUR PERMEABILITY(EN 1745) : 5/15 µGROSS DRY DENSITY : 1960 kg/m3


THERMAL CONDUCTIVITY : Int, 1.29 W/mK Ext, 1.38 W/mKDURABILITY AGAINST FREEZE-THAW : No Performance DeterminedDANGEROUS SUBSTANCES : Information on dangerous substances will only be given when


Features and Benefits• Provides an even surface for paint or other finishes• Ideal for use where durability, economy and colour co-ordination are major considerations• Can be utilised without additional finish* • Inherent thermal mass acts as a heat store

* A consistent natural surface colour cannot be guaranteed

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Length


18.5 26.0

19.1 26.8

Block Weights (kg)*

Dry

3% Moisture Content



440 215 100 140

100 140


Delivery and StorageBlocks are normally delivered to site in banded packs oncrane-offload road vehicles. Where requested packs canbe delivered shrink-wrapped and/or palletised to aidsubsequent site movement activities. All packagingshould be disposed of carefully in accordance with localenvironmental requirements.

If possible, delivered blocks should be stacked in plannedlocations on the site. This reduces the double-handling ofthe blocks.

Packs should be stacked carefully onto a prepared, clean,firm area to minimise soiling and damage. They shouldalso be protected from inclement weather and passingvehicles. Allow air to circulate through and around the stacks.

Health and SafetyCare and attention should be given to the working area tominimise accidents. Further information may be found inHSE Construction Sheet 37-Handling Building Blocks.

Safe lift/build heights will vary dependant upon the blocktype, thickness, etc. Weather conditions can also affect liftheights and restrictions may be needed due to forecastedwindy weather. Generally, lift heights should not exceed 6full block courses in a single working day. For cavity wallconstruction, the 2 leaves should be built up together andthe difference in leaf height, at any stage duringconstruction, should generally not exceed 675mm.A separate material safety datasheet for precast concreteproducts is available from CEMEX.

BlocklayingGeneral Construction: The building of masonrywalling should be to the workmanship guidance given inBS 8000-3.

Walls Below DPC: Dense Blockscan be used belowDPC and ground level as noted in Table 12 of BS 5628-3.

Laying in cold weather conditions: Blocks shouldnot normally be laid when the temperature is at or below3°C and falling or 1°C and rising.

Laying: Solid blocks should be laid on a full bed ofmortar and the cross/perpend joints fully filled. Whennecessary, adjust the consistency of the mortar to suit thesuction of the blocks.

Bond: Blocks should be laid to achieve a good bond,normally not less than one quarter the block length. In certain situations, consideration should be given to theaddition of bed joint reinforcement.

Cutting and Chasing: Where cutting of blocks isrequired on-site, the use of a central cutting area shouldbe encouraged. Vertical chasing in blockwork should not exceed one third of the block thickness and horizontalchasing one sixth. Back to back chases should be avoided.

Jointing: Mortar joints should be struck off as workproceeds. Where subsequent rendering or plastering is to take place, then rake out the joints to a depth of 15mmto act as a mortar key. Flush joints are recommended for facing work. Lightly tooling the joints highlights thearrises of the blocks and hence the coursing, scale andappearance of the finished wall. Raked joints should beused with caution.

Use in Sulfate Soils: Dense Blocks can be used in chemically aggressive ground conditions up to &including Class DC-3 as detailed in BRE Special Digest 1.

Mortar: Mortar should be specified in accordance withCl. 5.7 of BS 5628-3. To limit the visual impact ofshrinkage cracking, the weakest mortar specificationappropriate to the structural design should be chosen.

Finished WorkProtection of finished work: All blockwork should beprotected from inclement weather and other on-sitepractices. Suitable protective sheeting should be placedover the blockwork and firmly tied into place. Care mustbe taken to protect the work from frost damage or rapiddrying out.

Movement Control: After construction, buildings aresubject to small dimensional changes due to settlement,temperature change, moisture movement & carbonation.To account for this, movement joints should be providedin accordance with the recommendations of BS 5628: Part 3. Generally, they are required at intervals of 6-8m forexternal work. Movement joints are not normally requiredfor basic domestic dwellings. Consideration for thelocation of movement joints should be given:






• At locations of chases, recesses & openings

In areas of concentrated stress, such as above and belowopenings, consideration should be given to the use ofmortar joint bed reinforcement.

Painting: For 2000 Solid Dense Close TexturedReadyBlock®, two coats of alkali – resisting masonry paintis recommended, applied after the masonry has dried out.Before application any signs of efflorescence or othersurface staining must be removed.

Fixing: The ReadyBlock® range provides an excellentmedium for most types of fixings and readily acceptsmasonry nails, plugs or screws.

Efflorescence: Concrete products with high cementcontent may suffer the temporary phenomenon ofefflorescence. This is not detrimental to the performanceof the product and no responsibility can be accepted forits occurrence.


FAQ’sQ.What is the U value (thermal performance) of

ReadyBlock®?

A. Individual blocks do not have U Values. A U Value is determined by the type and thickness of each of the elements used to construct the wall, includingairspaces. Extensive thermal insulation data is given in BRE Special Digest (SD4) ‘Masonry walls and beamand block floors’ available free of charge from CBA,alternatively, call our ReadyBlock® Helpline Tel: 0800 667 827.


A. It has been shown over a period of many decades thatif protected from aggressive chemical or abrasivesituations, concrete blockwork does not deterioratewith time.

Q.Are 2000 Solid Dense Close TexturedReadyBlock® suitable for the construction of party walls as regards sound insulation?

A. These blocks when built ‘laid flat’ as a solid wall have sufficient weight to comply with the recommendations of Part E of the Building Regulations. A 50mm cavity wall constructed with 100mm wide blocks also conforms providing a 13mm lightweight plaster finish is applied to both sides of the wall.




®


With the ReadyBlock® range of Dense and Lightweight AggregateBlocks from CEMEX, you are assured to find the building solutionyou need. Our blocks can be used with confidence in a widevariety of internal and external applications. Our quality assuredmanufacture ensures that ReadyBlock® units are of a consistentand superior quality to meet the requirements of all European and British standards.


2000 SOLID DENSE READYBLOCK®

STANDARD FINISH

Material Datasheet









Features and Benefits• Have versatility to be used in a wide variety of internal and external applications• Allows use above and below the ground, where strength and durability are prime considerations• Typically used in cavity or solid wall constructions, they are also ideal for use in internal load bearing

walls and ReadyFloor® Beam and Block Floor system• Have excellent sound insulation and air permeability properties• Provide an excellent key for secondary finishes and fixings• Inherent thermal mass acts as a heat store

®


Length


13.9 16.7 18.5 26.0

14.3 17.2 19.1 26.8

Block Weights (kg)*

Dry

3% Moisture Content



ReadyFloor® Beam andBlock Flooring System:Tel: 01179 373740

75 90

390

290

440

190215

215

100

140

100 140

75 90 100 140


Delivery and StorageBlocks are normally delivered to site in banded packs oncrane-offload road vehicles. Where requested packs canbe delivered shrink-wrapped and/or palletised to aidsubsequent site movement activities. All packagingshould be disposed of carefully in accordance with local environmental requirements.





BlocklayingGeneral Construction: The building of masonry wallingshould be to the workmanship guidance given in BS 8000-3.

Walls Below DPC: Dense Blocks can be used belowDPC and ground level as noted in Table 12 of BS 5628-3.


Laying: Solid blocks should be laid on a full bed ofmortar and the cross/perpend joints fully filled. Whennecessary, adjust the consistency of the mortar to suit the suction of the blocks.

Bond: Blocks should be laid to achieve a good bond,normally not less than one quarter the block length. In certain situations, consideration should be given to the addition of bed joint reinforcement.


Jointing: Mortar joints should be struck off as workproceeds. Where subsequent rendering or plastering is to take place, then rake out the joints to a depth of 15mm toact as a mortar key. Flush joints are recommended for facingwork. Lightly tooling the joints highlights the arrises of theblocks and hence the coursing, scale and appearance of thefinished wall. Raked joints should be used with caution.

Use in Sulfate Soils: Dense Blocks can be used in chemically aggressive ground conditions up to &including Class DS-3 as detailed in BRE Special Digest 1.

Mortar: Mortar should be specified in accordance with Cl. 5.7 of BS 5628-3. To limit the visual impact of shrinkage cracking, the weakest mortar specificationappropriate to the structural design should be chosen.

Finished WorkProtection of finished work: All blockwork should be protected from inclement weather and other on-sitepractices. Suitable protective sheeting should be placedover the blockwork and firmly tied into place. Care mustbe taken to protect the work from frost damage or rapiddrying out.

Movement Control: After construction, buildings aresubject to small dimensional changes due to settlement,temperature change, moisture movement & carbonation.To account for this, movement joints should be providedin accordance with the recommendations of BS 5628: Part 3. Generally, they are required at intervals of 6-8m for external work. Movement joints are not normallyrequired for basic domestic dwellings. Consideration forthe location of movement joints should be given:



• At abutments of walls and columns and junctions of dissimilar materials





Render: All work should conform to recommendationsstated in BS EN 13914-1- External Rendering. In conditions of severe exposure, 3 coat work is recommended with a total thickness of 20mm. Allow adequate drying time between finishes or coats.

Plastering: All work should conform to therecommendations stated in BS EN 13914-2:2005 -Internal Plastering. The surface of 2000 Solid DenseStandard Finish ReadyBlock® provides a good key for alltypes of plaster. Dry-lining systems are compatible withthe ReadyBlock® range.

Painting: 2000 Solid Dense Standard FinishReadyBlock® is not intended to be directly painted.Where a paint finish is required a plaster or render finish should first be applied.





of ReadyBlock®?

A. Individual blocks do not have U Values. A U Value is determined by the type and thickness of each of the elements used to construct the wall, includingairspaces. Extensive thermal insulation data is given in BRE Special Digest (SD4) ‘Masonry walls and beamand block floors’ available free of charge from CBA, alternatively, call our ReadyBlock® Helpline Tel: 0800 667 827.


A. It has been shown over a period of many decades that if protected from aggressive chemical or abrasivesituations, concrete blockwork does not deterioratewith time.

Q.Are 2000 Solid Dense Standard FinishReadyBlock® suitable for the construction of party walls as regards sound insulation?

A. When built using 100mm blocks, a 50mm cavity wall plastered both sides has sufficient mass to complywith the recommendations of Part E of the BuildingRegulations. The mass requirement is also achieved bya solid wall 215mm thick built by ‘laying flat’ any sizeof these blocks.




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HOLLOW DENSE READYBLOCK®

STANDARD AND CLOSE TEXTURED FINISH

Material Datasheet



CONFIGURATION : For more information on void configuration, please contact your nearest sales office.

COMPRESSIVE STRENGTH : Mean 3.6 N/mm2, 7.3 N/mm2 Other strengths available on application




THERMAL RESISTANCE : 140mm width = Int, 0.18 m2 K/W Ext, 0.17 m2 K/W215mm width = Int, 0.23 m2 K/W Ext, 0.22 m2 K/W

DURABILITY AGAINST FREEZE-THAW : No Performance DeterminedDANGEROUS SUBSTANCES : Information on dangerous substances will only be given when


Features and Benefits• Reduced unit weight for ease of handling• Reduced floor/foundation loadings• Available either open textured to provide an excellent medium for surface finishes or close textured for painting• Can be used to construct steel - reinforced walls, to resist lateral loadings

®


Length


18.7 28.7

19.3 29.6

Block Weights (kg)*

Dry

3% Moisture Content



440 215 140 215

140 215


Delivery and StorageBlocks are normally delivered to site in banded packs oncrane-offload road vehicles. Where requested packs can bedelivered shrink-wrapped and/or palletised to aidsubsequent site movement activities. All packaging shouldbe disposed of carefully in accordance with localenvironmental requirements.


Packs should be stacked carefully onto a prepared, clean,firm area to minimise soiling and damage. They should also beprotected from inclement weather and passing vehicles.Allow air to circulate through and around the stacks.

Health and SafetyCare and attention should be given to the working area tominimise accidents. Units of 20kg or more in weight shouldbe handled mechanically, or using a two person team if theyhave to be used repetitively.Further information may be found in HSE ConstructionSheet 37-Handling Building Blocks.

Safe lift/build heights will vary dependant upon the blocktype, thickness, etc. Weather conditions can also affect liftheights and restrictions may be needed due to forecastedwindy weather. Generally, lift heights should not exceed 6full block courses in a single working day. For cavity wallconstruction, the 2 leaves should be built up together andthe difference in leaf height, at any stage duringconstruction, should generally not exceed 675mm.

A separate material safety datasheet for precast concreteproducts is available from CEMEX.

BlocklayingGeneral Construction: The building of masonry wallingshould be to the workmanship guidance given in BS 8000-3. When reinforcing bars are to be vertically groutedinto the hollow wall voids then the recommendations of BS 5628-2 should be followed.

Walls Below DPC: Hollow Dense Blocks can be usedbelow DPC and ground level as noted in Table 12 of BS5628-3.

Laying in cold weather conditions: Blocks should notnormally be laid when the temperature is at or below 3°Cand falling or 1°C and rising.

Laying: Hollow blocks should be laid on a shell-bed ofmortar and the cross/perpend joints fully filled. Whennecessary, adjust the consistency of the mortar to suit thesuction of the blocks.

Bond: Blocks should be laid to achieve a good bond,normally not less than one quarter the block length.In certain situations, consideration should be given to theaddition of bed joint reinforcement.

Cutting and Chasing: Where cutting of blocks is requiredon-site, the use of a central cutting area should be encouraged.Each pack of blocks contains a small number of ‘splitter’ blockswhich contain a narrow central slot to aid splitting into twohalves. Due to the internal voids, hollow blocks are not suitablefor chasing. It is however sometimes possible to locatepipework & cabling within the voids of the blockwork.

Jointing: Mortar joints should be struck off as workproceeds. Where subsequent rendering or plastering is totake place, then the joints should be slightly raked out to actas a mortar key. Flush joints are recommended for facing

work. Lightly tooling the joints highlights the arrises of theblocks and hence the coursing, scale and appearance of thefinished wall. Raked joints should be used with caution.

Use in Sulfate Soils: Dense Hollow Blocks can be used inchemically aggressive ground conditions up to & includingClass DS-3 as detailed in BRE Special Digest 1.

Mortar: Mortar should be specified in accordance with Cl.5.7 of BS 5628-3. To limit the visual impact of shrinkagecracking, the weakest mortar specification appropriate to the structural design should be chosen.

Finished WorkProtection of finished work: All blockwork should beprotected from inclement weather and other on-site practices.Suitable protective sheeting should be placed over theblockwork and firmly tied into place. Care must be taken toprotect the work from frost damage or rapid drying out.

Movement Control: After construction, buildings aresubject to small dimensional changes due to settlement,temperature change, moisture movement & carbonation. To account for this, movement joints should be provided inaccordance with the recommendations of BS 5628: Part 3.Generally, they are required at intervals of 6-8m for externalwork. Movement joints are not normally required for basicdomestic dwellings. Consideration for the location ofmovement joints should be given:







In areas of concentrated stress, such as above and belowopenings, consideration should be given to the use of mortarjoint bed reinforcement.

Render: All work should conform to recommendationsstated in BS EN 13914-1- External Rendering.In conditions of severe exposure, 3 coat work isrecommended with a total thickness of 20mm.Allow adequate drying time between finishes or coats.

Plastering: All work should conform to therecommendations stated in BS EN 13914-2:2005 - Internal Plastering. The surface of Hollow Dense ReadyBlock®

provides a good key for all types of plaster. Dry-liningsystems are compatible with the ReadyBlock® range.

Painting: Standard Finish Hollow ReadyBlock® are notintended to be directly painted. Where a paint finish isrequired a plaster or render finish should first be applied.Alternatively a Close Textured Hollow ReadyBlock® can bespecified in which case two coats of alkali – resistingmasonry paint is recommended, applied after the masonryhas dried out. Before application any signs of efflorescenceor other surface staining must be removed.

Fixing: The ReadyBlock® range is suitable for most types oflightweight fixings, masonry nails, plugs & screws. Heavyitems require support from ‘built in’ anchorages.

Efflorescence: Concrete products with high cement contentmay suffer the temporary phenomenon of efflorescence. This is not detrimental to the performance of the product and no responsibility can be accepted for its occurrence.


FAQ’sQ. What is the U value (thermal performance) of

ReadyBlock®?

A. Individual blocks do not have U Values. A U Value is determined by the type and thickness of each of the elements used to construct the wall, includingairspaces. Extensive thermal insulation data is given in BRE Special Digest (SD4) ‘Masonry walls and beamand block floors’ available free of charge from CBA,alternatively, call our ReadyBlock® Helpline Tel: 0800 667 827.

Q. What is the life expectancy of aggregateblockwork?

A. It has been shown over a period of many decades that ifprotected from aggressive chemical or abrasive situations,concrete blockwork does not deteriorate with time.

Q. Are Hollow Dense ReadyBlock® suitable for theconstruction of party walls as regards soundinsulation?

A. These blocks are not recommended for party wallconstruction.

Q. Are Hollow Dense ReadyBlock® suitable for allcategories of construction?

A. Hollow blocks can be used from a structural point of viewfor housing, but due to the widths being higher than the100mm traditionally used & the high levels of cutting &services installation; they are rarely used. Their ability toaccept grouted steel reinforcing makes them eminentlysuitable for industrial, agricultural & earth-retainingwalling situations.




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With the ReadyBlock® range of Dense and Lightweight AggregateBlocks from CEMEX, you are assured to find the building solutionyou need. Our blocks can be used with confidence in a widevariety of internal and external applications. Our quality assuredmanufacture ensures that ReadyBlock® units are of a consistentand superior quality to meet the requirements of all European and British standards.


2000 SOLID DENSE MIDI BLOCKSTANDARD FINISH

Material Datasheet









Features and Benefits• Have versatility to be used in a wide variety of internal and external applications• Allows use above and below the ground, where strength and durability are prime considerations• Typically used in cavity or solid wall constructions, they are also ideal for use in internal load bearing

walls and ReadyFloor® Beam and Block Floor system• Have excellent sound insulation and air permeability properties• Provide an excellent key for secondary finishes and fixings• Inherent thermal mass acts as a heat store• Meets the requirements of one-man handling• Ideally suited for constructing corners and to maintain uniformly spaced perpendicular joints

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Length

Size available (in mm)WidthHeight

17.1

17.6

Block Weights (kg)*

Dry

3% Moisture Content



ReadyFloor® Beam andBlock Flooring System:Tel: 01179 373740

290 215 140

140


Delivery and StorageBlocks are normally delivered to site in banded packs oncrane-offload road vehicles. Where requested packs canbe delivered shrink-wrapped and/or palletised to aidsubsequent site movement activities. All packagingshould be disposed of carefully in accordance with local environmental requirements.





BlocklayingGeneral Construction: The building of masonry wallingshould be to the workmanship guidance given in BS 8000-3.

Walls Below DPC: Dense Blocks can be used belowDPC and ground level as noted in Table 12 of BS 5628-3.


Laying: Solid blocks should be laid on a full bed ofmortar and the cross/perpend joints fully filled. Whennecessary, adjust the consistency of the mortar to suit the suction of the blocks.

Bond: Blocks should be laid to achieve a good bond,normally not less than one quarter the block length. In certain situations, consideration should be given to the addition of bed joint reinforcement.


Jointing: Mortar joints should be struck off as workproceeds. Where subsequent rendering or plastering is to take place, then rake out the joints to a depth of 15mm toact as a mortar key. Flush joints are recommended for facingwork. Lightly tooling the joints highlights the arrises of theblocks and hence the coursing, scale and appearance of thefinished wall. Raked joints should be used with caution.

Use in Sulfate Soils: Dense Blocks can be used in chemically aggressive ground conditions up to &including Class DS-3 as detailed in BRE Special Digest 1.

Mortar: Mortar should be specified in accordance with Cl. 5.7 of BS 5628-3. To limit the visual impact of shrinkage cracking, the weakest mortar specificationappropriate to the structural design should be chosen.

Finished WorkProtection of finished work: All blockwork should be protected from inclement weather and other on-sitepractices. Suitable protective sheeting should be placedover the blockwork and firmly tied into place. Care mustbe taken to protect the work from frost damage or rapiddrying out.

Movement Control: After construction, buildings aresubject to small dimensional changes due to settlement,temperature change, moisture movement & carbonation.To account for this, movement joints should be providedin accordance with the recommendations of BS 5628: Part 3. Generally, they are required at intervals of 6-8m for external work. Movement joints are not normallyrequired for basic domestic dwellings. Consideration forthe location of movement joints should be given:








Render: All work should conform to recommendationsstated in BS EN 13914-1- External Rendering. In conditions of severe exposure, 3 coat work is recommended with a total thickness of 20mm. Allow adequate drying time between finishes or coats.

Plastering: All work should conform to therecommendations stated in BS EN 13914-2:2005 -Internal Plastering. The surface of 2000 Solid DenseStandard Finish ReadyBlock® provides a good key for alltypes of plaster. Dry-lining systems are compatible withthe ReadyBlock® range.

Painting: 2000 Solid Dense Standard Finish Midi Block is not intended to be directly painted.Where a paint finish is required a plaster or render finish should first be applied.





of ReadyBlock®?

A. Individual blocks do not have U Values. A U Value is determined by the type and thickness of each of the elements used to construct the wall, includingairspaces. Extensive thermal insulation data is given in BRE Special Digest (SD4) ‘Masonry walls and beamand block floors’ available free of charge from CBA, alternatively, call our ReadyBlock® Helpline Tel: 0800 667 827.


A. It has been shown over a period of many decades that if protected from aggressive chemical or abrasivesituations, concrete blockwork does not deterioratewith time.

Q.Are 2000 Solid Dense Standard Finish Midi Block suitable for the construction of party walls as regards sound insulation?

A. When built as a 50mm cavity wall midi blocks havesufficient mass to comply with the recommendations of Part E of the Building Regulations. The massrequirement is also achieved by constructing a 215mm wide solid wall by laying the blocks 'flat'.




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2000 SOLID, CELLULAR AND HOLLOW DENSE READYBLOCK® SMOOTH FINISH

Material Datasheet

With the ReadyBlock® Smooth Masonry Units fromCEMEX, you can be assured of getting the best range of masonry solutions designed to suit a wide range of building applications. The ReadyBlock® Smooth range of Masonry Units manufactured to dimensionaltolerance category D2 of EN 771-3 as determined in EN 772-16. Quality Assured manufacture ensures that ReadyBlock® Smooth range of Masonry Unitscomplies with Category 1 for production control as defined in EN 771-3.

Product SpecificationCEMEX READYBLOCK® SMOOTHTO BS EN 771–3:2003

CATEGORY : AGGREGATE CONCRETE MASONRY UNIT

DIMENSIONAL TOLERANCES :Category D2 (Length & Width +

1mm -3mm, Height ±2mm)Flatness No Performance DeterminedPlane Parallelism No Performance Determined

COMPRESSIVE STRENGTH : Solid 17.5N/mm2

Cellular / Hollow 10.4N/mm2

MOISTURE MOVEMENT COEFFICIENT := < 0.5 mm/m when tested in accordance with EN 772-14

BOND STRENGTH : Fixed Value, 0.15N/mm2

REACTION TO FIRE : Class A1

MAXIMUM WATER ABSORPTION BY CAPILLARITY :2g/m2s when tested in accordance with EN 772-11

WATER VAPOUR PERMEABILITY (EN 1745) : 5/15 µ

THERMAL CONDUCTIVITY : Int, 1.33 W/mKExt, 1.43 W/mK

DURABILITY AGAINST FREEZE-THAW :No Performance Determined

DANGEROUS SUBSTANCES : Information ondangerous substances will only be given when and where required and in the appropriate form.

Features and Benefits• Provides a clean, crisp appearance• Used to create walling which requires no further

aesthetic finishing• Manufactured to a high strength, using white cement • Available in a variety of sizes and colours including;

Barbary Buff, Arctic White, Orton Grey, Barbary Green,Barbary Marigold, Barbary Cream

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Block Type

Technical DetailsCellular HollowSolid


Length (mm)

Width (mm)

Height (mm)

Net Dry Density (kg/m3)

Gross Dry Density (kg/m3)

Block Weight (kg)

Weight of Wall (kg/m2)

Sound Reduction (dB)

Internal Thermal Resistance (m2K/W)

External Thermal Resistance (m2K/W)

Notional Fire Resistance –Loadbearing/non-loadbearing (Hours)

440 440 440 440 440 390 390 390 390 440 440 440 440

75 100 140 190 215 90 100 140 190 100 140 190 215

215 215 215 215 215 190 190 190 190 215 215 215 215

2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000

2000 2000 2000 2000 2000 2000 2000 2000 2000 1550 1470 1316 1200

14.2 18.9 26.0 35.0 40.7 13.3 14.8 20.7 28.2 14.5 19.5 23.6 24.5

153 204 286 388 439 179 198 278 377 163 221 251 268

42 44 46 48 49 44 44 46 48 42 45 46 46

0.07 0.09 0.12 0.15 0.17 0.07 0.09 0.12 0.15 0.11 0.16 0.22 0.24

0.05 0.07 0.10 0.14 0.16 0.07 0.07 0.10 0.14 0.10 0.15 0.21 0.23

-/2 2/2 3/4 6/6 6/6 1/2 2/2 3/4 6/6 2/2 2/3 2/4 2/4


Colour VariationsWhilst the strictest controls are maintained to ensureconsistency of colour in masonry units, it should be bornein mind that these products are manufactured from naturalmaterials and occasional variations may occur, particularlywhen additional orders are placed.

Delivery and StorageBecause of its nature and intended purpose we exercisegreat care in the packaging of our products, all units are shrink wrapped. All packaging should be disposed of carefully in accordance with local environmentalrequirements. If possible, delivered blocks should be stacked in plannedlocations on the site. This reduces the double-handling of the blocks.Packs should be stacked carefully onto a prepared, clean,firm area to minimise soiling and damage. They shouldalso be protected from inclement weather and passingvehicles. Allow air to circulate through and around the stacks.

Health and SafetyCare and attention should be given to the working area tominimise accidents. Further information may be found inHSE Construction Sheet 37-Handling Building Blocks.Safe lift/build heights will vary dependant upon the blocktype, thickness, etc. Weather conditions can also affect liftheights and restrictions may be needed due to forecastedwindy weather. Generally, lift heights should not exceed 6full block courses in a single working day. For cavity wallconstruction, the 2 leaves should be built up together and the difference in leaf height, at any stage duringconstruction, should generally not exceed 675mm.A separate material safety datasheet for precast concrete products is available from CEMEX.

BlocklayingGeneral Construction: The building of masonrywalling should be to the workmanship guidance given in BS 8000-3.Walls Below DPC: Smooth Masonry Units can be usedbelow DPC and ground level as noted in Table 12 of BS 5628-3.Laying in cold weather conditions: Blocks shouldnot normally be laid when the temperature is at or below 3°C and falling or 1°C and rising.Laying: Solid & Cellular blocks should be laid on a fullbed of mortar and the cross/perpend joints fully filled.Hollow blocks should be laid on a shell bed of mortar and the cross/perpend joints fully filled.When necessary, adjust the consistency of the mortar to suit the suction of the blocks.Bond: Blocks should be laid to achieve a good bond,normally not less than one quarter the block length. Incertain situations, consideration should be given to theaddition of bed joint reinforcement.Cutting and Chasing: Where cutting of blocks isrequired on-site, the use of a central cutting area should be encouraged. Vertical chasing in block work should not exceed one third of the block thickness and horizontalchasing one sixth. Back to back chases should be avoided.

Jointing: Mortar joints should be struck off to fulfil the design requirements as work proceeds.Use in Sulfate Soils: Smooth Masonry Units can beused in chemically aggressive ground conditions up to &including Class DS-3 as detailed in BRE Special Digest 1.Mortar: Mortar should be specified in accordance withCl. 5.7 of BS 5628-3. To limit the visual impact ofshrinkage cracking, the weakest mortar specificationappropriate to the structural design should be chosen.

Finished WorkProtection of finished work: All block work should be protected from inclement weather and other on-sitepractices. Suitable protective sheeting should be placedover the block work and firmly tied into place. Care mustbe taken to protect the work from frost damage or rapiddrying out.Movement Control: After construction, buildings aresubject to small dimensional changes due to settlement,temperature change, moisture movement & carbonation.To account for this, movement joints should be providedin accordance with the recommendations of BS 5628: Part 3. Generally, they are required at intervals of 6-8m forexternal work. Movement joints are not normally requiredfor basic domestic dwellings. Consideration for thelocation of movement joints should be given:






• At locations of chases, recesses & openingsIn areas of concentrated stress, such as above and belowopenings, consideration should be given to the use ofmortar joint bed reinforcement.Render: Smooth Masonry Units are not normallyrendered, but if certain areas do require the application ofrender then all work should conform to recommendationsstated in BS EN 13914-1- External Rendering. Inconditions of severe exposure, 3 coat work isrecommended with a total thickness of 20mm. Allowadequate drying time between finishes or coats.Plastering: Smooth Masonry Units are not normallyplastered, but if certain areas do require the application of plaster then all work should conform to therecommendations stated in BS EN 13914-2:2005 -Internal Plastering. Painting: ReadyBlock® Smooth Masonry Units are notintended to be directly painted, however where a paintfinish is required. We recommend two coats of alkali –resisting masonry paint, applied after the masonry hasdried out. Before application any signs of efflorescence orother surface staining must be removed.

Fixing: The ReadyBlock® Smooth Masonry Units providean excellent medium for most types of fixings and readilyaccepts masonry nails, plugs or screws.Efflorescence: Concrete products with high cementcontent may suffer the temporary phenomenon ofefflorescence. This is not detrimental to the performanceof the product and no responsibility can be accepted for its occurrence.

SustainabilityAt CEMEX our environment matters, and the thermal massof our ReadyBlock® range not only could reduce the needfor air-conditioning in the summer but could also reducethe consumption of winter heating fuel by capturing solar gains.


of ReadyBlock®?

A. Individual blocks do not have U Values. A U Value is determined by the type and thickness of each of the elements used to construct the wall, includingairspaces. Extensive thermal insulation data is given in BRE Special Digest (SD4) ‘Masonry walls and beamand block floors’ available free of charge from CBA, alternatively, call our ReadyBlock®

Helpline Tel: 0800 667 827.

Q.What is the life expectancy of aggregate blockwork?

A. It has been shown over a period of many decades that if protected from aggressive chemical or abrasivesituations, concrete blockwork does not deteriorate with time.

Q.Are ReadyBlock® Smooth Masonry Unitssuitable for the construction of party walls as regards sound insulation?

A. When built using 100mm solid blocks a 50mm cavitywall plastered both sides has sufficient mass to complywith the recommendations of Part E of the BuildingRegulations. The mass requirement is also achieved by a solid wall 215mm thick built by 'laying flat' anythickness of 440x215 face sized blocks.

Q.How many sides of a block have a smooth finish?

A. Due to the method of manufacture the finish on thesmooth block is guaranteed only on one stretcher and header face only.

For more information contact ourReadyBlock® Helpline Tel: 0800 667 827.

The information contained in this publication was accurate at the time of production;however CEMEX reserves the right to introduce modifications or changes to detail at any time, as part of a policy of continuous improvement.

This paper is produced from pulp sourced from properly managed sustainable forests, is elemental chlorine free, uses up to 20% best white waste and is totally biodegradable.

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Material Datasheet DENSE AND MEDIUM DENSE SOLID … · With the CEMEX Dense and Medium Dense...

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Transcript of Material Datasheet DENSE AND MEDIUM DENSE SOLID … · With the CEMEX Dense and Medium Dense...