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Description: A study of the benefits obtained by cement modification of clay soils. Comparisons were made between cement-soil and lime-soil mixtures using 11 different soil samples, four with an AASHTO classification of A-6 and seven with a classification of A-7-6. Additions of 3% and 5% cement by weight to these soils significantly reduced the plasticity indexes and increased the shrinkage limits, cohesiometer values, and unconfined compressive strengths. Reductions in plasticity index by cement treatment were approximately the same as those produced by an equal weight of lime. Strengths of cement-treated A-6 soils were greater than those of A-7-6 soils. In addition, soils treated with cement generally showed higher strengths than those treated with lime. This was particularly evident with Type A-6 soils. This report is also found on DVD021.
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