A laboratory study on effect of test conditions on subgrade strength

摘要: Design of the various pavement layers is very much dependent on strength subgrade soil over which they are going to be laid. Subgrade mostly expressed in terms CBR (California Bearing Ratio). Weaker essentially requires thicker whereas stronger goes well with thinner layers. The and mutually must sustain traffic volume. Indian Road Congress (IRC) encodes exact design strategies based upon primarily dependant value for a laboratory or field sample soaked four days. always subjected change its moisture content due rainfall, capillary action, verflow rise water table. For an engineer, it’s important understand variation content. This project attempt values different days soaking corresponding It observed that decreases increases high degree soaking.