滨海盐渍土固化后物理力学性能试验研究  

Experimental study on the physical and mechanical capability of solidified inshore saline soil

作　　者：覃银辉[1] 何玮[1] 柴寿喜[2] 周琦[3] 

机构地区：[1]中南林业科技大学土木建筑与力学学院,湖南长沙410004 [2]天津城市建设学院土木工程系,天津300384 [3]河海大学岩土工程研究所,江苏南京210098

出　　处：《西安建筑科技大学学报（自然科学版）》2007年第3期408-413,共6页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：天津市自然科学基金资助项目(05YFSYSF00300);天津市高等学校科技发展基金项目(20051404);河北道桥岩土工程有限公司委托横向课题(17-2005-014)

摘　　要：滨海盐渍土中易溶盐遇水溶解,引起强度明显下降,变形增大,严重影响其作地基或路基填料的工程性能.本文从力学强度和变形特性两个方面,系统研究了二灰(石灰与粉煤灰)和高分子材料-SH固土剂对滨海盐渍土的物理力学性能的影响,为实际工程提供依据.试验结果表明:与素土相比,二灰固化滨海盐渍土的抗压强度、抗剪强度指标和压缩模量明显增大;与二灰固化滨海盐渍土相比,SH二灰固化滨海盐渍土的浸水抗压强度、饱和情况下抗剪强度指标和饱和情况下压缩模量有较大幅度提高,渗透系数减小,密实性增强.The dissolving of soluble salt in the inshore saline soil may cause strength drop and distortion increase, the work capability of groundsill and roadbed filling would be affected seriously. In this paper, so the infheence of the lime-ash and polymer solidified material-SH on the physical and mechanical capability was studied systematically from mechanics strength and deformation characteristic property that provided a basis for application. The result indicated that compared with pure soil, the compressive strength, shear strength index and compression modulus of solidified soil with lime-ash increased obviously and compared with solidified soil with lime-ash, the saturated compressive strength, saturated shear strength index and compression modulus of solidified soil with lime-ash and SH had a large scale enhancement, and the penetration coefficient is reduced, and the density enhanced at the same time.

关 键 词：滨海盐渍土 二灰 二灰固化滨海盐渍土 SH二灰固化滨海盐渍土 高分子材料-SH 物理力学性能 

分 类 号：TU411.2[建筑科学—岩土工程]