文章基本信息

标题：PROPERTIES OF COPPER-CONTAMINATED SAND BEFORE AND AFTER STABILIZATION USING ELECTRICAL RESISTIVITY MEASUREMENT
本地全文：下载
作者：Xiaofeng Liu ; Xin Xu ; Xiaoqiang Dong 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2019
卷号：28
期号：4
页码：2807-2815
语种：English
出版社：PSP Publishing
摘要：In this study, the electrical resistivity properties of copper-contaminated sand before and after cement solidified/stabilized, the effect of curing time on unconfined compressive strength and leaching toxicity of cement-treated sand were investigated. The results showed that the electrical resistivity of copper-contaminated sand increased with the increase of porosity and decreased with the increase of copper ion content and water content. An accurate electrical resistivity formula of copper-contaminated sand was also obtained. For the cement-treated copper-contaminated sand, the unconfined compressive strength increased with the increase of curing time, and high copper concentration could suppress the unconfined compressive strength. The electrical resistivity increased with the increase of the curing time and decreased with the increase of the copper ion content. In addition, there was a positive correlation between the electrical resistivity and unconfined compressive strength. The leaching toxicity increased with the increase of the copper ion content and the curing time. Through this study, electrical resistivity measurement can be possibly used as a nondestructive method to evaluate the pollution situation of copper-contaminated sand before and after cement solidification/stabilization.
关键词：copper-contaminated sand;electrical resistivity;stabilization;unconfined compressive strength