engineering recuitment GATE CE 2023-24 Test Series Highway Engineering Highway Materials and Maintenance
A sub grade soil sample was tested using standard CBR apparatus and the observations are given below.
|
Load (kg) |
Penetration (mm) |
|
68.5 |
2.5 |
|
88.5 |
5.0 |
Assuming that the load-penetration curve is convex throughout, the CBR value (%) of the sample is
1
4.70%
2
7.5%
3
4.30%
4
5%