红粘土地区有机质水泥土试验研究  

Experimental Study on Organic Cement Soil in Laterite Area

作　　者：刘宝臣[1] 李懿[1] 潘宗源[1] 郑金 

机构地区：[1]桂林理工大学土木与建筑工程学院,广西桂林541004 [2]中冶集团武汉勘察研究院有限公司,武汉430080

出　　处：《路基工程》2013年第4期50-52,共3页Subgrade Engineering

基　　金：广西自然科学基金重点项目(2010 GXNSFD013011)

摘　　要：水泥搅拌法因其良好的经济效应,被广泛地应用在地基处理方面。但由于人类的活动造成了大面积土地含有有机质,影响了水泥土桩的强度,对桂林某工地化粪池附近的桩体进行检测,因为该原因造成承载力不足就是很好的证明。通过室内试验,初步探讨了养护时间和养护环境对有机质水泥土强度的影响。试验研究表明:有机质水泥土强度会随着龄期而增长,前期增长速度快,而后期增长幅度则会减慢;有机质含量会影响压缩系数的大小;自然养护条件下有机质水泥土的抗剪强度和抗压强度比湿养和水养条件下的要高;试验中使用的外加剂可增加有机质水泥土的强度。Cement mixing, due to its good economic effect, is applied to foundation treatment widely. However, owing to human activities, a large area of land contains organic matters and the strength of cement-soil pile is affected, Through indoor test, this paper discussed how maintenance time and environment affect the strength of organic cement soil tentatively. The result shows that strength of organic cement soil will increase with age with fast speed in early stage and slow down in late stage ; the content of organic matters will influence compression coefficient; under the condition of natural maintenance, the shearing and compressive strength of the soil are larger than that under wet maintenance and water curing ; during the test, use of additives may increase the strength of the soil.

关 键 词：红粘土 有机质水泥土 养护条件 龄期 强度 

分 类 号：TU472.36[建筑科学—结构工程]