击实参数对砂土EPS颗粒混合轻质土的影响  

Effect of compaction parameters on lightweight sand-EPS beads soil

作　　者：李明东[1] 朱伟[2,3] 张春雷[3] 赵干[2] 

机构地区：[1]淮海工学院土木工程学院,江苏连云港222005 [2]河海大学岩土工程科学研究所,江苏南京210098 [3]河海大学环境科学与工程学院,江苏南京210098

出　　处：《河海大学学报（自然科学版）》2008年第6期814-817,共4页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(50379011)

摘　　要：为了明确击实参数对砂土EPS颗粒混合轻质土(LSES)物理力学性质的影响,利用室内试验研究了击实能量(击实一次的击实功)和击实次数对LSES物理力学性质的影响.结果表明:LSES的干密度、无侧限抗压强度、黏聚力、内摩擦角均随击实次数的增加而增加,增加速度由快逐渐减慢并逐渐趋于稳定;随着击实能量的增加也会增加,但增加速度不趋于稳定.根据室内试验结果总结了干密度和无侧限抗压强度的计算式.The laboratory tests were conducted to investigate the effect of compaction parameters, compaction energy （work per compaction time） and compaction times, on the physico-mechanical properties of the lightweight sand-EPS beads soil （LSES）. The test results show that the dry density, unconfined compression strength, cohesion and friction angle of the LSES increase with the increase of the compaction energy and compaction times, and the increment gradually decreases and tends to be stable. The above properties increase with the increase of the compaction energy. Finally, equations for the dry density and unconfined compression strength were obtained based on the laboratory test results.

关 键 词：EPS 轻质土 击实功 干密度 

分 类 号：TU441.3[建筑科学—岩土工程]