摘要
笔者对二八灰土、三七灰土、粉煤灰土和水泥灰土进行了室内强度试验,分析了养护龄期,含水量及浸水次数对灰土强度特性的影响。从灰土的微观机理入手对土体强度的两个指标c,φ进行了分析。试验结果表明:灰土、粉煤灰土和水泥灰土的养护龄期必须满足90d才能达到其应有强度,90d后也会有一定增长,但增长量较小,其中水泥灰土在10d龄期就有较大的强度;过大或过小的含水量都使灰土、粉煤灰土和水泥灰土的c值下降,以此不同的是φ值随含水量的增加而下降;浸水对灰土、粉煤灰土和水泥灰土的c,φ值影响明显,水泥灰土的水稳定性最好,其次是粉煤灰土。
Based on the triaxial test the author analysis the lime-soil, the coal lime-soil and the cement lime-soil strength changes with curing period, water content and immersing water times, and given explanation of two indicators c an＆p in micro-mechanism. The test results showed that the lime-soil, coal lime-soil and cement lime-soil curing period must be more than 90 days, because the strengths appears a rapidly increase within 90 days curing period. Only after 90 days the strengths growth becomes slow and approach finally steady volumes. Besides the cement lime-soil strength change will have a great strength in 10 days;the c volumes will decreased if the water content of lime-soil, the coal lime-soil and the cement lime-soil to be too large or too small. The φ values will decline if the water content increases as difference; finally the immersing water times will impact c, φ volumes significantly, water stability of the cement lime-soil is best and the coal lime-soil following it.
出处
《低温建筑技术》
2009年第9期87-90,共4页
Low Temperature Architecture Technology
关键词
强度变化
三轴试验
浸水试验
水稳定性
strength change
triaxial test
immersion test
water stability
