BibTeX:

@article{IJIRSTV3I5046,
     title={Effect of Saturation on Bearing Capacity of Subgrade Soil},
     author={Dharmesh Kumar and Dr. R. K. Pandey},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={3},
     number={5},
     pages={124--126},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV3I5046.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

The pavement layers to be laid over sub grade soil starts off with the estimation of sub grade Bearing capacity and the volume of traffic to be carried. Design of the pavement layers are highly dependent on the strength of the sub grade soil over which they are going to be laid. Sub grade strength is mostly expressed in terms of CBR (California Bearing Ratio). Feeble sub grade essentially requires course layers whereas stronger sub grade goes well with lean pavement layers. The sub grade is always subjected to change in saturation level due to precipitation, capillary action, flood or abrupt rise of water table and frost action due to climate. Change in sub grade causes change in the sub grade strength. And it becomes utterly essential for an engineer to understand the exact nature of dependence of sub grade strength on moisture variation. An understanding of the dependence of the CBR value of local soils on water content will contribute towards better design and maintenance practices. Normally CBR test is an easy and well adopted method conducted on soil samples in-situ or in laboratory to measure the strength of sub grade. However, many other tests are also considered for assessing the sub grade bearing capacity.

Sub-Grade Soil, Sub-Grade Bearing Capacity, Moisture Variation, CBR Test