高含水量石灰土的材料性能研究

Research on Material Properties of Lime Soil with High Water Content

道路在修筑过程中,路基土中的水是导致公路工程出现质量问题的主要原因之一,而利用生石灰处理高含水量土是一种有效的技术措施。本文主要针对高含水量石灰土的体积稳定性及强度特性进行研究,通过无荷载膨胀率试验以及冻胀试验,得到不同初始含水率及掺灰量条件下,高含水量石灰土体积稳定性的变化规律,同时利用CBR承载比试验对生石灰处理高含水量土的强度特性进行研究,分析得到初始含水率和掺灰量对于土体强度特性的影响规律。

During the construction of road, water in the subgrade soil is one of the main reasons for quality problems in highway engineering. The use of quicklime to treat high water content soil is an effective technical measure. This article focuses on the volume stability and strength characteristics of high water content lime soil. The change law of volume stability of high water content soil with different initial water content and lime content was obtained through no-load expansion rate test and frost heave test. CBR test was used to study the strength characteristics of high water content soil treated with quicklime, and effects of initial water content and lime content on the strength characteristics of soil were obtained.