广东工业大学学报Issue(2)：17-22,6.DOI:10.3969/j.issn.1007-7162.2015.02.003
水泥基固化剂固化南沙软土的力学及微观试验研究
Experimental Research of Mechanics and Microscopic on Nansha Soft Soil Reinforced with Cement-based Curing Agent
摘要
Abstract
Direct shear test and unconfined compression test were conducted on soft soil at Nansha of Guangzhou blended with ordinary Portland cement and admixtures such as lime , gypsum and bentonite respectively to study its mechanical property and get the variation of reinforced soil's internal friction angle (IFA), cohesion, unconfined compressive strength (UCS) according to the different mixing ratios or ages of the curing agents .Scanning electron microscope observation ( SEM ) was also applied to research the different microstructural characteristics of different reinforced soil .The results show that data trending is similar to the outcome when cement is blended in merely .Mechanical parameters of the reinforced silt in-crease when the mixing ratio or age increases .But different curing agents have different influences .Lime has the best effect on long-term strength .For early age strength , bentonite has the best reinforcement effect and gypsum takes second place .To get a certain strength , both gypsum and bentonite can reduce the consumption of cement at a certain degree .The research result has a certain reference to the similar research and engineering .关键词
淤泥/固化剂/掺入比/龄期/力学实验/电镜扫描Key words
silt/curing agent/mixing ratio/curing age/mechanics experiment/electron microscope scanning分类
建筑与水利引用本文复制引用
梁仕华,张朗,周世宗..水泥基固化剂固化南沙软土的力学及微观试验研究[J].广东工业大学学报,2015,(2):17-22,6.基金项目
国家自然科学基金资助项目（511788112）；珠江科技新星专项（2011J2200018）；广东省高等教育高层次人才项目 （）
