中南大学学报（自然科学版）2018，Vol.49Issue(3)：678-683,6.DOI:10.11817/j.issn.1672-7207.2018.03.022
电石渣/偏高岭土固化铜污染土的浸泡试验研究
Soaking experimental study on solidification/stabilization of Cu2+contaminated soils with carbide slag and metakaolin
摘要
Abstract
Geopolymer prepared from carbide slag(CS) and metakaolin(MK) was used for solidification/stabilization of Cu2+contaminated soils. The immersion tests were conducted on the soils under deionized water or hydrochloric acid conditions to investigate the unconfined compressive strength(UCS), and the long-term stability of the soils was evaluated. The results show that UCS increases with the increase of the CS content. When the CS content is lower than 9%, the stress increases slightly with the increase of the strain and there is no significant peak. However, when the CS content reaches 9%, the stress grows rapidly and there appears a peak. The change in UCS is almost the same in soaked deionized water and hydrochloric acid, and the UCS increases with the increase of the CS content, but it's obvious lower than that of the soils without soaking. The geopolymer with the CS content of 10% and MK content of 5% is confirmed to be the best for remediation of Cu2+contaminated soils.关键词
铜污染土/固化/稳定化/电石渣/浸泡试验Key words
Cu2+contaminated soils/stabilization/solidification/carbide slag/immersion experiment分类
建筑与水利引用本文复制引用
陈永贵,潘侃,谭邦宏,叶为民,陈宝..电石渣/偏高岭土固化铜污染土的浸泡试验研究[J].中南大学学报（自然科学版）,2018,49(3):678-683,6.基金项目
国家自然科学基金资助项目(41422207, 41772279) (Projects(41422207, 41772279) supported by the National Natural Science Foundation of China) （41422207, 41772279）
