New and economical mixing method of cement-admixed clay for DMM application

作     者：Lorenzo, Glen A. Bergado, Dennes T. Soralump, Suttisak 

作者机构：The Geotechnical and Geoenvironmental Engineering Program School of Civil Engineering Asian Institute of Technology Klong Luang Pathumthani12120 Thailand Faculty in the Geotechnical Engineering Kasetsart University Paholyothin Road Bangkok10900 Thailand 

出 版 物：《Geotechnical Testing Journal》 (Geotech. Test. J.)

年 卷 期：2005年第29卷第1期

页      面：54-63页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 081402[工学-结构工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0813[工学-建筑学] 0814[工学-土木工程] 

主　　题：Mixing 

摘      要：The results of unconfined compression and oedometer compression tests confirmed the existence of optimum mixing clay water content for economical and efficient mixing of cement and clay for deep mixing method 共DMM兲 application. A concept supporting the existence of optimum mixing clay water content is presented, and a schematic diagram idealizing the clay-water-air-cement interactions is illustrated. The optimum mixing clay water content (Cw,opt) is defined as the total clay water content of the clay-water-cement mixture that would yield the highest possible improvement in strength of cured cement-admixed clay. Based on the test results presented, the Cw,opt would fall near the liquid limit of the base clay. Significantly, at this optimum mixing water content, only 10 % cement content by weight is needed instead of the corresponding 17 % in the conventional method of mixing, with consequent 40 % reduction of cement content and cost. Copyright © 2006 by ASTM International.