PREDICTING THE CBR VALUE OF DIFFERENT SOILS WITH THE HELP OF INDEX PROPERTIES

Subgrade strength is an important soil parameter in the design of flexible pavements. CBR value is indicative of the strength of the subgrade. The CBR test is a time consuming test and laborious. Hence here a method is proposed to predict the CBR value of a soil based on its index properties like LL, PL and PI. In the present study eight number of soil samples (having different index properties) were collected from different parts of Jabalpur district (MP). Liquid limit, plastic limit, plasticity index were found out and the CBR value was predicted based on the index properties. The method uses single variable and multiple variable regression analysis of Microsoft excel