Aggregate Specifications and Blending - Civil Engineering Handouts/5 - Aggregate... · Aggregate...

23
Aggregate Specifications

Transcript of Aggregate Specifications and Blending - Civil Engineering Handouts/5 - Aggregate... · Aggregate...

Page 1: Aggregate Specifications and Blending - Civil Engineering Handouts/5 - Aggregate... · Aggregate Specifications. CIVL 3137 123 Specifications Source: Standard Specifications for Road

Aggregate Specifications

Page 2: Aggregate Specifications and Blending - Civil Engineering Handouts/5 - Aggregate... · Aggregate Specifications. CIVL 3137 123 Specifications Source: Standard Specifications for Road

CIVL 3137 123

Specifications

Source: Standard Specifications for Road and Bridge Construction (TDOT, 2006)

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CIVL 3137 124

Specifications

Clay Lumps < 0.5%

Coal and Lignite < 0.5%

L.A. Abrasion Loss < 40%

Material Passing No. 200 Sieve < 3%

TDOT Specs for Concrete Fine Aggregate

Sodium Soundness Loss < 10%

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CIVL 3137 125

SpecificationsTDOT Specs for Concrete Fine Aggregate

Percent Passingby Weight

3/8 in. (9.5 mm) 100No. 4 (4.75 mm) 95 ‐ 100No. 16 (1.18 mm) 50 ‐ 90No. 50 (300 m) 5 ‐ 30No. 100 (150 m) 0 ‐ 10No. 200 (75 m) 0 ‐ 3

Sieve Size

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CIVL 3137 126

Specifications

0

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0.010.1110100Opening Size (mm)

Perc

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1½" ¾" 3/8" 4 8 16 30 50 100 200

Fine Aggregatefor Concrete

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CIVL 3137 127

Specifications

Clay Lumps < 0.25%

Coal and Lignite < 1%

L.A. Abrasion Loss < 40%

Material Passing No. 200 Sieve < 1%

TDOT Specs for Concrete Coarse Aggregate

Sodium Soundness Loss < 9%

Flat and Elongated Particles (5:1) < 10%

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CIVL 3137 128

SpecificationsTDOT Specs for Concrete Coarse Aggregate

Application Size No.

Concrete Pavement 467Concrete Base Course 467Cement Treated Base Course 57Structural Concrete 57Prestressed Concrete 57 or 67Precast Concrete 57 or 67

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CIVL 3137 130

Specifications

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0.010.1110100Opening Size (mm)

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1½" ¾" 3/8" 4 8 16 30 50 100 200

No. 57

1“ nominal maximum

#4 nominal minimum

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CIVL 3137 131

Specifications

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No. 57

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GRAIN SIZE DISTRIBUTION GRAPH

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110100

GRAIN SIZE IN MILLIMETERS

PER

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T PA

SSIN

1½" ¾" ⅜" 4 83" 16

2 3 4 5 6 7 8

Standard Sizes of Processed Aggregate (ASTM D448)

CIVL 3137 132

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Standard Sizes of Processed Aggregate (ASTM D448)

GRAIN SIZE DISTRIBUTION GRAPH

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110100

GRAIN SIZE IN MILLIMETERS

PER

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SSIN

1½" ¾" ⅜" 4 83" 16

5 6 7

56 67

CIVL 3137 133

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Standard Sizes of Processed Aggregate (ASTM D448)

GRAIN SIZE DISTRIBUTION GRAPH

0

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110100

GRAIN SIZE IN MILLIMETERS

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SSIN

1½" ¾" ⅜" 4 83" 16

5 7

57

CIVL 3137 134

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Standard Sizes of Processed Aggregate (ASTM D448)

GRAIN SIZE DISTRIBUTION GRAPH

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110100

GRAIN SIZE IN MILLIMETERS

PER

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SSIN

1½" ¾" ⅜" 4 83" 16

57

3

357

CIVL 3137 135

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Standard Sizes of Processed Aggregate (ASTM D448)

GRAIN SIZE DISTRIBUTION GRAPH

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1½" ¾" ⅜" 4 83" 16

67

4

467

CIVL 3137 136

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Aggregate Blending

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CIVL 3137 138

Aggregate Blending

0

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0.010.1110100Opening Size (mm)

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1½" ¾" 3/8" 4 8 16 30 50 100 200

TDOT411-E

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CIVL 3137 139

Aggregate Blending

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1½" ¾" 3/8" 4 8 16 30 50 100 200

Sand

No. 78

Screenings

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CIVL 3137 140

Aggregate Blending

blend A A B B C Cp f p f p f p

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Example

72

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Sieve Opening (mm)

Gradation Analysis Chart

1-1/2" 100503016843/8"3/4" 200

B

A

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Example

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Gradation Analysis Chart

1-1/2" 100503016843/8"3/4" 200

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A

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CIVL 3137 143

Aggregate Blending

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No. 78

Screenings

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CIVL 3137 144

Aggregate Blending

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TDOT411-E

22.5% No. 7860.0% Screenings17.5% Sand