水泥加固软土的强度特征及微观结构分析  

Evaluation of Microstructure Features and Mechanical Properties of Soil Contained some Cement

作　　者：赵乃志[1] 黄昌铁[2] 陈鑫[1] 

机构地区：[1]沈阳建筑大学土木工程学院,沈阳110168 [2]沈阳建筑大学管理工程学院,沈阳110168

出　　处：《工程建设与设计》2007年第9期61-65,共5页Construction & Design for Engineering

基　　金：建设部科技项目(05-k1-22)

摘　　要：利用化学分析、电镜扫描分析和无侧限抗压强度等实验,研究了天然软土、室内的水泥土样品宏观及微观特征,得出结论:由于水泥的掺入,使土体易于压实,孔隙体积减小,且能生长出纤维状矿物,使密实度提高,从而提高土的强度。并且从微观分析研究了水泥土加固软土的作用机理,从微观角度解释了水泥土宏观强度特征及微观结构变化之间的关系。Object： According to the plump value of aggregated structure showed that the shapes of structures are generally oblate or near circles. Method： The analysis method of soil microstructures by means of image processing technique is introduced. A evaluation index of microstructure factors is discussed. Result and conclusion： the evidence of cement cementation is obviously. It is showed that after the soil was added the silt particles content is almost the same as before, the middle sand particles content with some pseudo sandy is increased clearly.

关 键 词：软土地基 水泥土 微结构 力学性质 

分 类 号：TU411.92[建筑科学—岩土工程]