水泥土力学性能最优拌合水量的试验研究  

Experimental Study on the Optimal Mixing-Water Amount Related to the Mechanical Properties of Cement-Soil

作　　者：陈文昭[1,2] 高全臣[1] 

机构地区：[1]中国矿业大学力学与建筑学院,北京100083 [2]南华大学城市建设学院,湖南衡阳421001

出　　处：《建筑科学》2010年第5期10-13,共4页Building Science

基　　金：衡阳市科技局项目(2008HKJ04;2008KJ012)

摘　　要：在分析水泥水化作用理论需水量的基础上,采用室内试验方法,研究了水泥土拌合水量对水泥土力学性能的影响规律,研究了拌合水量与水泥土无侧限抗压强度及其抗剪强度指标内摩擦角、粘聚力之间的相互关系,获得了水泥掺入比为20%、28d龄期水泥土最优拌合水量。对于湖南衡阳的饱和软粘土,水泥掺入比为20%、28d龄期水泥土最优拌合水量约为28%。实际工程中应采取措施将水泥土拌合时的水量控制在最优拌合水量附近,以提高水泥土加固的经济技术效益。Based on the study of the theoretical water requirement about cement hydration,indoor test methods were adopted.The relation of the cement-soil mixing-water amount with the mechanical properties of the cement-soil and the impact of the mixing-water amount on the unconfined compressive strength and shear strength of the cement-soil were studied,and the optimal mixing-water amount of the cement-soil was achieved when its cement blend ratio is 20% and its age is 28 days.As to the saturated soft clay in Hengyang,Hunan,its optimal mixing-water amount of cement-soil is about 28% when its cement blend ratio is 20% and its age is 28 days.In actual project,in order to enhance the economic and technological benefits of the cement-soil reinforcement,measures should be taken to control the mixing-water amount near its optimal mixing-water amount.

关 键 词：试验研究 水泥土 水泥水化 力学性能 最优拌合水量 

分 类 号：TU502.6[建筑科学—建筑技术科学]