Study on the Engineering Properties of the Cement Stabilized Full Weathering Granite Soil
When the full weathered granite is regarded as highway subgrade filling material, it is restricted to the application because of its high mica content, lax construction, bad water stability, and small cohesion. For these reasons, the full weathered granite soil should be improved before using for subgrade filling, and the cement was taken as an improver in this paper. The dynamic and static characteristics of cement stabilized soils were studied systemically. It was shown from the experiment results that there is a decrease in the content of mica and clay, and an increase of quattz of the cement stabilized soils. The unconfined strength of the cement stabilized full weathered granite increases linearly with the increase in cement content. There is power function relationship between water stability coefficient and the cement content. The unconfined strength and water stability coefficient increases with degree of compaction and with age as well, while the increasing rate decrease with age. The dynamic strength of the cement stabilized full weathered granite increased with the increase of the degree of compaction and the cement content. However, as the water content increases, the dynamic strength increased first and then decreases, there is an optimum moisture content. A linear model was proposed to describe the dynamic modulus and dynamic relationship between the stress amplitude. The results can provide an important reference for engineering practice.
Z. Y. Li et al., "Study on the Engineering Properties of the Cement Stabilized Full Weathering Granite Soil", Advanced Materials Research, Vols. 261-263, pp. 1820-1825, 2011