摘要
通过不固结不排水三轴试验,研究了水泥掺入比小于5%的水泥土早期强度特征,探讨了素土与不同掺量水泥土的应力-应变关系,抗剪强度指标的变化规律,分析了土样的破坏形态。试验结果表明,水泥土强度随水泥掺量增加而增加,1%水泥掺量下土样与素土强度特性与破坏特性相似,2%水泥掺量一定程度上能增加土体强度,5%水泥掺量能够显著增加土体强度,起到良好的加固作用。研究结果对于深入认识低掺量水泥土的早期加固机理和现场施工合理选择水泥掺入比具有指导意义。
The early strength characteristics of cemented soil with cement mixing ratio less than 5%were studied by unconsolidated undrained triaxial test.The stress-strain relationship and shear strength index change rule of plain soil and different cement soil were discussed,and the failure mode of soil samples was analyzed.The test results showed that the strength of cement soil increased with the increase of cement content.The strength and failure characteristics of plain soil and soil sample with 1%cement content were similar;2%cement content increased the soil strength to some extent;5%cement content significantly increased the soil strength and provided good reinforcement.The research results have guiding significance for understanding the early reinforcement mechanism of low-volume cement soil and rational selection of cement incorporation ratio.
作者
李灿
周海清
赵尚毅
张艳涛
王庆鑫
LI Can;ZHOU Hai-qing;ZHAO Shang-yi;ZHANG Yan-tao;WANG Qing-xing(Anny Logistics University,Chongqing 401311,China;China Construction Tunnel Corp.,Ltd.,Chongqing 401147,China)
出处
《当代化工》
CAS
2019年第1期13-16,共4页
Contemporary Chemical Industry
基金
重庆市基础研究与前沿探索项目
项目号:CSTC2018JCYJAX0373
关键词
水泥土
三轴压缩实验
力学特性
抗剪强度
Cement soil
Triaxial compression test
Mechanical properties
Shear strength
