Levels of

Substitution

Volume of Concrete Aggregates (cu. ft.)

Mixing Proportions

Cement

Sand

Gravel

SW Material^*

LS1 (0%)

1

3

6.0

0.00

1:3:6

LS2 (15%)

1

3

5.1

0.90

1:3:5.1:0.9

LS3 (30%)

1

3

4.2

1.80

1:3:4.2:1.8

LS4 (45%)

1

3

3.3

2.70

1:3:3.3:2.7