Solidification and Stabilization of Heavy Metal-Contaminated Industrial Site Soil Using KMP Binder
文献类型：期刊论文
| 作者 | Xia, Wei-Yi2; Feng, Ya-Song2; Du, Yan-Jun2; Reddy, Krishna R.1; Wei, Ming-Li2,3 |
| 刊名 | JOURNAL OF MATERIALS IN CIVIL ENGINEERING
 |
| 出版日期 | 2018 |
| 卷号 | 30期号:6页码:- |
| 关键词 | Contaminated soil Leachability Microstructure Pore-size distribution Solidification stabilization Unconfined compressive strength |
| ISSN号 | 0899-1561 |
| DOI | 10.1061/(ASCE)MT.1943-5533.0002264 |
| 英文摘要 | A new and innovative binder KMP is developed for solidification/stabilization (S/S) of soils contaminated with heavy metals such as lead (Pb), zinc (Zn), and cadmium (Cd). The KMP consists of acid-activated phosphate rock, monopotassium phosphate, and reactive magnesia. However, effectiveness and immobilization mechanisms of KMP in actual field contaminated soils have not been investigated. This study presents a systematic investigation of strength, leachability, and microstructural properties of KMP stabilized field clayey soil that has been contaminated with Pb, Zn, and Cd at a smelter site. Several series of laboratory tests are conducted that include unconfined compression tests (UCT), toxicity characteristics leaching procedure (TCLP), modified European Communities Bureau of Reference (BCR) sequential extraction procedure, mercury intrusion porosimetry (MIP), X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive spectroscopy (EDS) studies. The TCLP and UCT results show that the leached Pb, Zn, and Cd concentrations decrease while unconfined compressive strength and dry density of the stabilized soil increase with increasing binder content and curing time. The sequential extraction results indicate that large percentages of Pb, Zn, and Cd are transferred from the exchangeable fraction to residual fraction after the KMP stabilization. The pore-size distribution reveals that the mean diameters and volumes of interaggregate and intra-aggregate pores decrease with an increase in the KMP content. The XRD and SEM/EDS analyses demonstrate the formation of magnesium phosphate-based products and heavy metal phosphate-based products in the stabilized soil, and they are the primary mechanisms for strength increase and heavy metal immobilization, respectively. |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000431119300010 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4274]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Univ Illinois, Dept Civil & Mat Engn; 2.Southeast Univ, Inst Geotech Engn, Jiangsu Key Lab Urban Underground Engn & Environm ; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Xia, Wei-Yi,Feng, Ya-Song,Du, Yan-Jun,et al. Solidification and Stabilization of Heavy Metal-Contaminated Industrial Site Soil Using KMP Binder[J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2018,30(6):-. |
| APA | Xia, Wei-Yi,Feng, Ya-Song,Du, Yan-Jun,Reddy, Krishna R.,&Wei, Ming-Li.(2018).Solidification and Stabilization of Heavy Metal-Contaminated Industrial Site Soil Using KMP Binder.JOURNAL OF MATERIALS IN CIVIL ENGINEERING,30(6),-. |
| MLA | Xia, Wei-Yi,et al."Solidification and Stabilization of Heavy Metal-Contaminated Industrial Site Soil Using KMP Binder".JOURNAL OF MATERIALS IN CIVIL ENGINEERING 30.6(2018):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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