二灰土的压缩特性研究

Study on Compression Characteristics of Lime-ash Soil

为研究二灰土的压缩特性,采用室内压缩试验方法,分析最优含水率、压实度对压缩性的影响。结果表明,试样最优含水率+2%时,压实度在95.5%时压缩系数发生拐点,压缩模量在土体压实度增大过程中存在极值。由此可以得出结论,最优含水率附近,二灰土的压缩性随压实度的增加而存在拐点。研究结果可作为工程建设参考依据。

In order to study the compression characteristics of lime-ash soil, the relationship between the water content and modulus of compressibility and relationship between the degree of compaction and coefficient of compression are analyzed by using the compression testing in laboratory. The results show that when the moisture content is 21.5%, the co- efficient of compression of the sample would happen with a turning point, and there exists the extreme value point for the modulus of compressibility during the compaction degree increasing. From the analysis results, the conclusion is made that the characteristics of compressibility have a special point when the compaction degree increasing nearby the optimum water content. The research results could be used for the references of project construction.