RBI Grade 81

Presentation

On

“RBI Grade 81 – A Natural Pavement Material & Soil Stabilizer”& Soil Stabilizer”

(A Cost Effective , Rapid, Environment Friendly Pavement Material & Soil Stabilizer )

By

Alchemist Touchnology Limited, New Delhi

Road Building International (RBI) Grade 81

� Pavement Material & Soil Stabilizer developed by

the South African Army in the beginning of 90’s

for pavement engineering applications by RBI.

� RBI Grade 81 is a natural inorganic Pavement

Material & Soil Stabilizer which re-engineers &

modify the properties of soil to strengthen themodify the properties of soil to strengthen the

same.

� RBI Grade 81 is patented worldwide including

India.

Properties

� Powder stabilizer

� Grey color

� Non-inflammable

Effectiveness of RBI Grade 81 with Different Types of Indian Soils

Untreated

(UT)

Treated

(T)

Type

of

Soil

CBR % UCS, kg/sqcm

CRRI IITKgp IITR IITM RAASTA CRRI IITKgp IITR IITM RAASTA

UT Clay 4 3 - 2 5 5 0 0 3

T with

RBIClay 25 78 - 22 42 15 19 14 14

UT Silt 8 - 13 - 10 4 - - 16

( All results are with 4% RBI Grade 81)

UT Silt 8 - 13 - 10 4 - - 16

T with

RBISilt 198 - 114 - 32 32 - - 39

UT Sand 22 - - - 14 0.5 - - 5

T with

RBIsand 53 - - - 143 7 - - 23

UT Gravel 30 - 90 - 34 3 5 -- 2.1

T with

RBIGravel 197 - 361 - 180 26 35 -

19*(6%

Stabiliser)

Effectiveness of RBI Grade 81 with Different Types of Indian Soils

Untreated

(UT)

Treated

(T)

Type

of

Soil

PI (Plasticity Index) (%) FSI (Free Swell Index) (%)

Sample

1

Sample

2

Sample

3

Sample

4

Sample

5

Sample

1

Sample

2

Sample

3

Sample

4

Sample

5

UT Clay 18 11.5 29 24.2 46.4 16.6 20 33 61.5 53.8

( All results are with 4% RBI Grade 81)

UT Clay 18 11.5 29 24.2 46.4 16.6 20 33 61.5 53.8

T with

RBIClay 11.7 5.2 8.8 13.3 21.2 3.2 4.3 13 23.1 21.2

UT Silt 10.3 11.6 10.3 5.6 23 5 16.6 0 9.1 8.3

T with

RBISilt 5.4 6 2.3 1 10.6 0 0 0 0.8 2.1

� Construction time reduction by 30 – 40%

� Drastically increases the strength

� Treated soil is water resistant & prevents

damage to the road foundation

� Reduces transport & earth-moving costs

� Reduces leaching and contamination of

ground water

� Reduces use of bitumen.

� Reduces energy consumed in road

construction

Advantages of RBI Grade 81 Environmental Benefits of using RBI 81

� Reduces transport & earth-moving costs

by about 60%

� Longer Durability

� Reduces Maintenance Cost

construction

� Saves construction material like

Aggregates, Good soil

� Saves non-renewables resources in

construction process

� Reduces the Carbon Emission resulting

into carbon credits

Application Areas

� Pavements

� Highways & Expressways

� Hill Roads; High Altitude

Roads

� Unpaved Roads

� Bricks & Paver Blocks

� Low Cost Housing

� Footpaths; Boundary

Walls

� Railway Embankments� Unpaved Roads

� Pothole Repair

� Cold Recycling

� Helipads; Airfields

� Hard Standing Ground

� Op Tracks

� Mule tracks

� Railway Embankments

Construction Equipments

1. JCB 4. Rotavator

2. Dozer 5. Water Sprinkler

Pavement Design Catalogue

Sub-Grade CBR 2% (CBR 10% using RBI)

Traffic

msa

Thickness

mm

Pavement Composition

Bituminous Surfacing Base Sub-Base

BC DBM

10 850 (540) 40 100 (50)

20 850 (565) 40 130 (75)

IRC Code References For Reducing Pavement Thickness

250

(450)

46020 850 (565) 40 130 (75)

30 900 (580) 40 150 (90)

50 925 (600) 40 175 (110)

100 955 (630) 50 195 (130)

150 975 (650) 50 215 (150)

� Rise in CBR from 2% to 10 %,

� There is saving of DBM by 42 %

� Saving in aggregates for sub base & base will be 37 %

� More than 50% saving in aggregate as per IRC:37- 2001

IRC Code References For Reducing Pavement Thickness

Relation – IRC:37-2001, Annexure I:

Sub-Grade:

E3 (MPa) = 10 x CBR , for CBR< 5 %

E3 (MPa) = 17.6 x (CBR)0.64 for CBR > 5%

Granular Sub Base and Base

E2 (GSB + Base), MPa = E3 (Sub-Grade), MPa x 0.2 x (h,mm)0.45

Substitution of Layer

E1H13/12(1 - µ2) = E2H2

3/12(1- µ2), for both granular layers µ = 0.40

E1H13 = E2H2

3 H1(RBI) = (E2 / E1)1/3 x H2

Case Study

Reasi - Pauni Road

Katra, J & KKatra, J & K

Oct 2008

(13 BRTF)

Road Cross Sections, Hill Road

Conventional Technology RBI Grade 81 Technology

Layer

Layer

Thickness

(mm)

Layer

Layer

Thickness

(mm)

SDBC 25 SDBC 25

BM 75Aggregate+ 4% RBI Grade 81 150

WBM 75

WBM 75Soil + 4% RBI Grade 81 150

WBM 75

WBM 100 Soil + 2% RBI Grade 81 100

GSB 150

Saving in Pavement Thickness

GSB 150

Total Thickness 725 Total Thickness 425

Savings : Case Study Reasi - Pauni Road

253 cum250

300

Un

it v

alu

es

Savings:

1. Aggregate = 85%

2. Bitumen = 67 %

3. Truck Trips = 73%

4. Time Savings = 40 %

Comparison Chart

136 x 10 kg

42 No's

180 hr

36 cum44 X 10kg

11 No's

108 hr

0

50

100

150

200

Quantity of

Aggregate

Quantity of

Bitumen

Truck trip Time

Un

it v

alu

es

� Conventional Pavement

� RBI 81 Pavement

Field CBR by DCP

Sr.

NoLayer

Date of

Laying

Field CBR by DCP

%

19-10-08 20-10-08 21-10-08 22-10-08 19-11-08

1 Sub-Grade 18-10-08 24 43 48 51 -1 Sub-Grade 18-10-08 24 43 48 51 -

2 Sub-Base 19-10-08 - 73 98 175 375

3 Base 20-10-08 - - 94 135 375

Taking Core of RBI Grade 81 Patch After 9 Months

Oct 08 – Jul 09

Stiffness & E Value by Geoguage

Property Type of Stretch Jul-09(9 Months)

Apr-10(18 Months)

Increment

(%)

Conventional

Stretch/RBI 19.47 19.23 -1.26

Stiffness Grade 81

Stretch

19.47

32.43

19.23

36.22

-1.26

10.47

E Value

Conventional

Stretch/RBI

Grade 81

Stretch

168.84

281.27

166.76

314.15

-1.24

10.46

Performance Certificate

CONSTRUCTION OF AIRFIELD AT

NYOMA (LADAKH)NYOMA (LADAKH)

Construction of Airfield using RBI Grade 81

� Altitude of about 13500 Ft.

� Temperature of -30o C to +30o C

� Design: One layer of 250 mm of Sub Grade stabilization

with 4% RBI Grade 81

Construction Process

Finished Surfaces – An Overview

Finished Surfaces & Field Testing on Airfield

CLAY

SAND

Field Testing by Geoguage and Core Cutting

Field Testing by DCP and LWD

Landing and Takeoff at Nyoma Airfield Runway

Source: http://livefist.blogspot.com/2009/09/iaf-32-lands-at-nyoma-ladakh.html

Landing at Nyoma Airfield Runway

Source: http://livefist.blogspot.com/2009/09/iaf-32-lands-at-nyoma-ladakh.html

Landing Marks at Nyoma Airfield Runway

Test Results By Geogauge on Sub-Grade of Airfield

After 28 Days & 7 Months

Properties RequiredAchieved

October 2009

Achieved

April 2010

Increment

(%)

Stiffness (KG)

MN/m10.67 21.47 23.94 11.50

E Value

MPa92.52 186.24 207.64 11.49

CBR

(%)28 142 174.57 22.94

UCS

Kg / sq cm5.50 22.60 23.94 5.93

Performance Certificate of Airfield

ASSAM Project (OIL)ASSAM Project (OIL)

Trial in Duliajan, Assam

� State : Assam

� Project Name : Parking Area for Mobile Rig

� Length : 27 m

� Width : 12 m

� Design : 100 mm Soil Stabilized with 4% RBI Grade 81

� Soil Type : Clay

� Condition : Saturated Sub Grade

: Moisture Content more than 50%

The Location

Dewatering

Pulverizing Soil

Spreading RBI Grade 81

Mixing RBI – 81 with Soil by Rotavator

Initial Compaction

Final Compaction

COMMONWEALTH

GAMESGAMES

60 M X 6 M STRETCH CONSTRUCTED USING

RBI Grade-81

INITIAL CONDITION OF STRETCH

FINISHED STRETCH WITH RBI GRADE 81

PARKING AT SIRIFORTPARKING AT SIRIFORT

INITIAL CONDITION

FINISHED LOOK

Applications in Perma-Frost Condition

� Application in Italy

� Quarry Road

� Truck Load 40 MT

� 3 Years without Maintenance

RBI 81 Treated SurfaceUntreated Surface

Cold Recycling with RBI Grade 81

SOR

KARNATAKAKARNATAKA

IRC

ACCREDITED ACCREDITED

Some Completed Works in

IndiaIndia

Quarry Road

� State : Karnataka

� Project Name : Quarry Road near Weigh Bridge

� Location : Kolar

Paved Road

� State : Jammu & Kashmir

� Project Name : Durbal Hanjik Road, Badgam

� Location : Srinagar

Narhar (Pilani)

� State : Rajasthan

� Location: Pilani

� Length : 220 m

� Width : 3.75 m

Road Made Using Iron Ore Waste From Mines


� Project Name : PWD Approach Road to BBH Mines

� Location : Chitradurg

Instead of soil from outside mines waste was used in construction

Highway Road in the Hills


� Project Name : Reasi Pauni Road

� Location : Katra

Highway Road in the Hills (Contd)


� Project Name : Km 63.10, Jammu Poonch Highway

� Location : Tanda Bamla Section, Jammu

Desert Roads


� Project Name : Kota Sawai Madhopur Road, SH-33

� Location : KM 17, Kota

Desert Roads (Contd)


� Project Name : Mawali Tali Bhuria Dhora Road

Nr. South Camp

� Location : Mahajan Ranges, Suratgarh

Village Roads

� State : Orissa

� Project Name : Uttara Balakati Khurda Road

� Location : Barijanga

Village Roads (Contd)

� State : Orissa

� Project Name : PMGSY Rural Road

� Location : Village Dhamra

Village Roads (Contd)

� State : Tamil Nadu

� Project Name : Internal Village Road

� Location : Tirupur

City Road

� State : Delhi

� Project Name : Connecting Road Near Air force

School & CSD Canteen, Officers Quarters

� Location : Delhi Cantt.

Off Site Mixing


� Project Name : Campus Road

� Location : KGA, Bangalore

Forest Road

� Forestry roads – The benefits of using RBI 81 are particularly self-evident

when building roads in a fragile natural environment. RBI 81 do not place an

additional burden upon their precious natural resources

Some International Applications

Main road into city of Kigali - RwandaSecondary paved roads - KenyaHeavy traffic paved road – Israel Main road into city of Kigali - RwandaSecondary paved roads - KenyaHeavy traffic paved road – Israel

Access road to a construction site

IsraelAccess roads and drilling pad

Angola

Township roads - South Africa

Alchemist Touchnology Limited

Building No. 23, Alchemist House

Nehru Place, New Delhi- 110019

Tel – 011 - 40600800

Fax – 011 - 40600888

Website- www.rbigrade81.com

RBI 81 Road

Asphalt Road

RBI Grade 81

Documents

Transcript of RBI Grade 81