固化土强度和弹性模量特性研究  

Study on Strength and Modulus of Elasticity of Solidified Soil

作　　者：张元 张国忠[2] 李鹏军 Zhang Yuan;Zhang Guozhong;Li Pengjun(Zhongchengxiang Construction Engineering Co.,Ltd.Qingdao 266000,China;School of Architecture Engineering,Jiamusi University Jiamusi 154007,China)

机构地区：[1]中诚祥建设集团有限公司,山东青岛266000 [2]佳木斯大学建筑工程学院,黑龙江佳木斯154007

出　　处：《广东土木与建筑》2020年第5期5-6,14,共3页Guangdong Architecture Civil Engineering

基　　金：冻土工程国家重点实验室开放基金课题(SKLFSE201907)。

摘　　要：通过不固结不排水三轴剪切试验,研究固化剂掺量、围压2个因素对固化土强度和弹性模量的影响。研究表明:固化剂可有效提升路基填料的强度;随着固化剂掺量的增加,固化土的强度增加,应力-应变关系曲线软化程度更强。同时,固化剂掺量增加,影响土体弹性模量,呈增加趋势,且固化剂掺量越大影响越大。随着围压的增加,固化土的弹性模量也呈增加趋势,且围压越大影响越大。在土体加固技术方面固化剂具有广泛的应用前景。Through unconsolidated and undrained triaxial shear test,the effects of the dosage of curing agent and confining pressure on the strength and elastic modulus of the solidified soil were studied.The results show that curing agent can effectively improve the strength of subgrade packing.With the increase of the dosage of curing agent,the strength of the solidified soil increased,and the stress-strain curve softened more strongly.At the same time,the increase of the dosage of curing agent affects the elastic modulus of soil,showing an increasing trend,and the larger the dosage of curing agent,the greater the impact.With the increase of confining pressure,the elastic modulus of solidified soil also tends to increase,and the greater the confining pressure,the greater the influence.The curing agent has a wide application prospect in soil consolidation technology.

关 键 词：三轴试验 固化剂 应力-应变关系 弹性模量 

分 类 号：TU472.5[建筑科学—结构工程]