东南大学学报（自然科学版）2016，Vol.46Issue(z1)：123-128,6.DOI:10.3969/j.issn.1001-0505.2016.S1.022
固化Zn、Cl污染砂土的强度及浸出特性
Strength and leaching properties of solidified/stabilized sandy soil contaminated with zinc and chlorine
摘要
Abstract
In order to study the remediation effect of new solidification material dealing with zinc and chlorine compositely contaminated sandy soil, field tests were carried out at an abandoned site of a factory. Combined with laboratory experiments, such as unconfined compression strength tests, PH test and toxicity characteristic leaching procedure,the effects of binder type,content and curing age on physico-mechanical and leaching properties of the stabilized soils were studied. Moreover, the re-mediation efficiencies of different binders were compared. The test results show that the dry density of stabilized soil is higher than that of untreated soil, with an increase of 11% to 12%. The strength of stabilized soil increases with the increase of curing time and binder content, wherein the strength for 6% KMP treated after 28 d of curing is 6. 17 times higher than that of untreated soil. The pH val-ues of treated soil significantly increase with the addition of binders, and the pH values of stabilized soil for GGBS-MgO are higher than those for binder KMP in every curing time. Two kinds of medic-ament have different remediation effects on zinc and chlorine contaminants. In general, the zinc and chlorine in soil can both be stabilized by the two binders.关键词
Zn/Cl复合污染/固化稳定化( S/S)/强度/pH值/毒性浸出Key words
compositely contaminant of zinc and chlorine/solidification/stabilization/strength/pH value/toxicity characteristic leaching procedure分类
资源环境引用本文复制引用
任伟伟,杜延军,魏明俐,夏威夷,冯亚松,雷鸣,张凯..固化Zn、Cl污染砂土的强度及浸出特性[J].东南大学学报（自然科学版）,2016,46(z1):123-128,6.基金项目
国家自然科学基金重点资助项目(41330641)、国家自然科学基金资助项目(51278100,41472258)、国家高新技术研究发展计划(863计划)资助项目(2013AA06A206)、江苏省自然科学基金杰出青年基金资助项目(2012022) （41330641）
