压实石灰黄土压缩特性试验研究

通过击实试验，获得了不同石灰掺量石灰黄土的最大干密度和最佳含水量。通过对不同压实度、石灰掺量和龄期的压实石灰黄土进行压缩试验，得到了各参数对压缩变形的影响规律及施工中选择依据。绘制出不同压实度石灰黄土的归一化压缩曲线，从而可方便地计算不同压实度石灰黄土路基的沉降。发现侧限割线模量和压力成正比，表明侧限压缩割线模量分析法适用于压实石灰黄土。给出了计算压实石灰黄土路基沉降的3种方法。

Test Study on Compression Characteristics of Compacted Lime Stabilized Loess

Based on compaction test, the biggest dry density and the optimum water content of the lime stabilized loess with different ratio of lime to soil were got. And, based on the compression test to the compacted lime stabilized loess with different compactnesses, ratio of lime to soil and curing periods, the author got the effects on the compression deformation and appropriate values of the three parameters in the above. The normalization compression curve of the compacted lime stabilized loess was found, with which the settlement of the subgrade made up of compacted lime stabilized loess could be calculated conveniently. This paper also found that side confined secant modulus was directly proportional to the compressive stress, which indicated that the analysis method of side confined compression secant modulus adapted to the compacted lime stabilized loess. Finally, three methods were given to calculate the settlement of the subgrade made up of compacted lime stabilized loess.