生石灰改良高液限土试验研究
high liquid limit clay; quick lime; water ratio limit; swelling ratio; cyclic wetting and drying test
本文通过试验的方法研究了经生石灰改性后的高液限土的物理力学性质，总结了不同灰剂量生石灰改良土的液限、塑限、塑性指数以及无荷膨胀率随时间的变化规律；通过干湿循环试验验证了石灰改良土在干湿交替状态下的变形及强度特性。试验结果表明：掺入一定量的生石灰以后，高液限土的含水率能够降低到最优含水率附近；生石灰改性后的高液限土在经过一定时间的养护后，可塑性、膨胀性大大降低；素土的水稳定性较差，不能满足工程需要，经生石灰改良后的高液限土具有很好水稳定性。
he physical and mechanical properties of high liquid limit soil modified by quick lime were analyzed on experiments. The law of liquid limit, plastic limit, plasticity index and free swelling ratio with time was summarized on different lime dosage. The deformation and strength characteristics of modified soil were verified by cyclic wetting and drying test. The experiment result showed: the high liquid limit soil was modified by quick lime under certain maintenance, plasticity and expansibility of which dramatically declined. The water stability was also improved.
席文勇 、徐海波
水工材料工程基础科学
高液限粘土生石灰界限含水率膨胀率干湿循环
high liquid limit clayquick limewater ratio limitswelling ratiocyclic wetting and drying test
席文勇 ,徐海波.生石灰改良高液限土试验研究[EB/OL].(2008-11-21)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/200811-618.点此复制
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