Durability Improvement of Granite Residual Soil by Lime

Abstract

Granite residual soil is a kind of common building material for subgrade in China. However, its stability and durability are not as good as requested by specification. Lime is regarded as an effective modifier for granite residual soil. The influence of lime dosages on stability and durability of granite residual soil are evaluated and its effectiveness is verified and quantified based on lab tests of modulus and strength. It is shown that the performance improvement is obvious. Modified granite residual soil has better support to pavement structure and improves the stability and durability of pavement.