Abstract
The relationships among soil, sand, cement binder and compaction pressure were considered in this paper. The soil grading was investigated with particle sizes which are, in particular order, finer than 5, 1.18, 0.6, 0.3 and 0.15 mm. Corresponding to each of soil grades, the compaction pressure was applied in the range from low to high level. The influence of soil grading and compaction pressure could be determined by value of compressive strength, dry density and water absorption. The experimental results reported in term of the optimal proportion for mixture, which gave the best strength in each level of compaction pressure and size of soil particles. In addition, the conclusion about the influence of clay content on characteristics of compressed cement-soil materials was also figured out so that the suitable clay content in the optimal mix proportion for practical application could be determined.
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