• NAVEENA N
• N S CHANDANSHREE

In pavement design, the most important parameter used is the California Bearing Ratio (CBR) of subgrade soil. All along the road stretch, we encounter soil differing in its basic properties and CBR strength at different locations. Therefore the thickness of flexible pavement varies with the change in CBR of subgrade soil. As the determination of CBR of soils at different locations in a single project area gets too late since it requires 4 days soaking period. Soil CBR mainly depends on soil basic properties like Gradation, Liquid Limit (LL), Plastic Limit (PL), Plasticity Index (PI), Maximum Dry Density (MDD) and Optimum Moisture Content (OMC). Additionally we know that CBR of soil has a direct linear relationship with soil property like Maximum Dry Density (MDD).In the present study, an attempt is made to relate the basic properties of various soil to its CBR value. A statistical regression analysis has been carried out and simple as well as multiple linear regression equations have been developed to predict the CBR from its basic properties. This facilitates the pavement designer to arrive at the CBR values in less time, which otherwise requires minimum four days for simulating the worst field condition by soaking. Soil was selected from different locations of Anekal Taluk, keeping in mind to study the variation for different types of soil. Accordingly, the soil selected were classified as per BIS classification, with CBR values ranging from 1 % to 18%

California Bearing Ratio, Liquid Limit, Plastic Limit, Plasticity Index, Maximum Dry Density, Optimum Moisture Content, Specific Gravity, Regression analysis, SLRA, MLRA.

"Instituting relationship between California Bearing Ratio value and Physical properties of Soil by Regression analysis", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.61-74, June-2018, Available :http://www.jetir.org/papers/JETIR1806397.pdf

"Instituting relationship between California Bearing Ratio value and Physical properties of Soil by Regression analysis", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp61-74, June-2018, Available at : http://www.jetir.org/papers/JETIR1806397.pdf