Experimental research on compression and collapsible characteristics of saline soil

被引：1

作者：

Zhang, L. J. ^{[1
]}

Wang, X. G. ^{[1
,2
]}

Xia, T. D. ^{[2
]}

Cheng, K. ^{[2
]}

机构：

[1] Univ Tarim, Coll Water Conservancy & Architectural Engn, Alar 843300, Peoples R China

[2] Zhejiang Univ, Coll Architectural Engn, Hangzhou 310012, Peoples R China

来源：

2020 2ND GLOBAL CONFERENCE ON ECOLOGICAL ENVIRONMENT AND CIVIL ENGINEERING | 2020年 / 568卷

关键词：

D O I：

10.1088/1755-1315/568/1/012015

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Fine-grained saline soil is widely distributed in the western region of China. Studying compression and dissolution characteristics of salty soil can provide technical support for local engineering design. In this paper, deformation characteristics of saline soil were studied by nuclear magnetic resonance experiment,compression and dissolution test. Results showed that the compression coefficient was negatively related to the pressure and dry density. When dry density was small, e-lgp curve in the back was a straight line. As dry density growing, e-lgp curve became more and more gentle, and feature of straight line disappeared gradually. As pressure increased, compression coefficient reduced. The maximum collapsible deformation was 25kpa pressure under rho(d).=1.3,1.35g/cm(3) condition. As dry density added, load corresponding to the maximum amount of collapse increased. With growing of confining pressure, pore size decreased gradually. After pressure consolidation of 50, 100, 200, 300 and 500kPa, 99.85% of the pore size is distributed between 0-0.1 mu m.

引用

页数：9