EPS颗粒轻质混合土研究发展综述.pdf

Civil Engineering and Technology December 2012, Volume 1, Issue 1, PP.1-9 The Research and Development of Light-Weight Soil Mixed with EPS Beads # Fei Tong, Hongmei Gao , Guoxing Chen Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing Jiangsu 210009, China #Email: hongmei54@163.com Abstract This study aims to summarize the research and development of light-weight soil mixed within EPS beads at home and abroad. It is point out that the confining pressure, cement content, EPS beads content, water content and curing time have a profound effect on the mechanical properties, the strength and deformation properties. And from the macroscopic and microscopic, the formation of the shear strength and the failure mechanism are revealed. The literature also presents the experimental studies of creep, permeability and water absorbability in order to confront practical applications, especially under dynamic loads. It is found that the confining pressure, cement content, EPS beads content are main factors to the relationship between the dynamic stress and strain, the dynamic strength ,dynamic modulus and damping ratio. At last, the article introduces some engineering applications, then points out the existing problems about researching EPS composite soil which should be paid more attention. Keywords : EPS Beads; Light- Weight Soil; Strength and Modulus; Dynamic Property; Constitutive Model EPS颗粒轻质混合土研究发展综述* 童飞，高洪梅，陈国兴 南京工业大学 岩土工程研究所，江苏 南京 210009 摘 要：简要回顾了国内外关于EPS 颗粒轻质混合土的研究发展历程；总结了EPS 颗粒轻质混合土的物理力学特性、强 度和变形特性的影响因素（围压、水泥含量、EPS 颗粒含量、含水量和养护龄期等）及其影响规律；并且从宏观和微观 的角度分析抗剪强