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[1]周俊杰,陈蕾,唐强,等.冻融对固化重金属污染土强度特性的影响[J].南京工业大学学报(自然科学版),2018,40(03):81-87.[doi:10.3969/j.issn.1671-7627.2018.03.014]
 ZHOU Junjie,CHEN Lei,TANG Qiang,et al.Stress-strain properties of heavy metal contaminated soils stabilized/solidified by cement under cyclic freezing-thawing[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(03):81-87.[doi:10.3969/j.issn.1671-7627.2018.03.014]
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冻融对固化重金属污染土强度特性的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年03期
页码:
81-87
栏目:
出版日期:
2018-05-20

文章信息/Info

Title:
Stress-strain properties of heavy metal contaminated soils stabilized/solidified by cement under cyclic freezing-thawing
文章编号:
1671-7627(2018)03-0081-07
作者:
周俊杰1陈蕾1唐强1陈国兴23潘玲玲1陈甦1
1.苏州大学 轨道交通学院,江苏 苏州 215131; 2.南京工业大学 岩土工程研究所,江苏 南京 210009; 3.江苏省土木工程防震技术研究中心,江苏 南京 211800
Author(s):
ZHOU Junjie1CHEN Lei1TANG Qiang1CHEN Guoxing23PAN Lingling1CHEN Su1
1.School of Rail Transportation,Soochow University,Suzhou 215131,China; 2.Institute of Geotechnical Engineering,Nanjing Tech University,Nanjing 210009,China; 3.Civil Engineering & Earthquake Disaster Prevention Center of Jiangsu Province,Nanjing 211800,China
关键词:
冻融循环 固化 重金属 无侧限抗压强度 水泥
Keywords:
freeze-thaw cycles solidify heavy metal unconfined compressive strength cement
分类号:
TM912
DOI:
10.3969/j.issn.1671-7627.2018.03.014
文献标志码:
A
摘要:
通过室内试验模拟现场回填土受到的冻融循环作用,对冻融条件下水泥固化重金属Pb、Cu及Zn污染土的强度特性进行研究,并通过对比分析讨论了冻融循环、重金属掺量、重金属种类等因素对水泥固化重金属污染土的无侧限抗压强度影响。结果表明:冻融循环会降低水泥固化重金属污染土的强度,且随着冻融循环次数的增多及水泥掺量的减少,固化土的强度显著降低。此外,不同重金属离子对冻融条件下固化土强度影响不同,Pb2+影响较小,Cu2+次之,Zn2+对水化反应阻碍最为显著。
Abstract:
The experiment simulates freeze-thaw cycles acting on the in-situ soil polluted by heavy metals such as Pb,Cu and Zn.By studying the unconfined compressive strength(UCS),three aspects have been taken into account,including the freeze-thaw cycles,the contamination content and species of heavy metals.The test results show that different pollutant types bring different influences.The presences of Cu2+ and Zn2+ reduce soil strength by hindering cement hydration.Besides,with the increase of the times of freeze-thaw cycles,soil strength significantly reduces.

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备注/Memo

备注/Memo:
收稿日期:2016-07-25
基金项目:国家自然科学基金青年基金(51708377); 江苏省自然科学基金青年基金(BK20170339); 江苏省高等学校自然科学研究面上项目(17KJB560008); 江苏省建设系统科技项目(2016ZD18,2017ZD002)
作者简介:周俊杰(1992—),男,江苏无锡人,硕士,主要研究方向为岩土工程; 陈甦(联系人),教授,E-mail: xiaowozi@hotmail.com.
引用本文:周俊杰,陈蕾,唐强,等.冻融对固化重金属污染土强度特性的影响[J].南京工业大学学报(自然科学版),2018,40(3):81-87..
更新日期/Last Update: 2018-05-31