Determine the suitability of the aggregate, with the gradation tabulated below, for use in Portland cement concrete. Review the grain size distribution to determine if it meets all of the relevant specifications for use in concrete (i.e. gradation limits, fineness modulus and % fines). Refer to the specification for concrete aggregates (Table 7 – 10) below:
Determine the suitability of the aggregate, with the gradation tabulated below, for use in Portland cement concrete. Review the grain size distribution to determine if it meets all of the relevant specifications for use in concrete (i.e. gradation limits, fineness modulus and % fines). Refer to the specification for concrete aggregates (Table 7 – 10) below:
|
Grain Size (mm) |
% Passing |
Cum %Retained |
|
25 |
100 |
|
|
19 |
100 |
|
|
12.5 |
100 |
|
|
9.5 |
100 |
|
|
4.75 |
95 |
|
|
2.36 |
85 |
|
|
1.18 |
55 |
|
|
0.6 |
30 |
|
|
0.3 |
15 |
|
|
0.15 |
8 |
|
|
0.075 |
6 |
|
Fineness Modulus - write answer to two decimal places
Percent fines - write answer to the nearest whole number %
Meets Gradation Limits? - y/n (only type lower case "y" for yes and lower case "n" for no)
Suitable for use in portland cement concrete subject to abrasion? - y/n (only type lower case "y" for yes and lower case "n" for no)
Step by step
Solved in 3 steps with 3 images
