Influences of chemical degradation on mechanical behaviour of a limestone
Influences of chemical degradation on mechanical behaviour of a limestone
复制标题
DOI：
10.1016/j.ijrmms.2011.04.015
复制
发表时间：
2011-07-01
影响因子：
7.2
通讯作者：
Xu, W. Y.
中科院分区：
文献类型：
--
作者：
Xie, S. Y.;Shao, J. F.;Xu, W. Y.
本文致力于对化学降解对多孔石灰岩力学行为影响的实验研究。首先分别对完好的和化学降解的样品进行了静水压力和三轴压缩试验。研究发现，化学降解导致孔隙坍塌极限应力、弹性模量和材料内聚力降低。还进行了耦合的三轴蠕变 - 化学降解试验。化学降解加剧了与时间相关的变形，并可通过形成虫洞网络使渗透率显著增加。© 2011爱思唯尔有限公司。保留所有权利。
This paper is devoted to the experimental investigation of chemical degradation effects on mechanical behaviour of a porous limestone. Hydrostatic and triaxial compression tests are first performed, respectively, on sound and chemically degraded samples. It is found that the chemical degradation induces the diminution of pore collapse limit stress, elastic modulus and material cohesion. Coupled triaxial creep-chemical degradation tests are also performed. The chemical degradation enhances time-dependant deformation and can generate significant increase in permeability through the formation of wormholes networks. (C) 2011 Elsevier Ltd. All rights reserved.