Effect of Compaction Degree on Solidification Characteristics of Pb-Contaminated Soil Treated by Cement
文献类型：期刊论文
| 作者 | Xue, Qiang ; Li, Jiang-shan; Liu, Lei
|
| 刊名 | CLEAN-SOIL AIR WATER
 |
| 出版日期 | 2014 |
| 卷号 | 42期号:8页码:1126-1132 |
| 关键词 | Compaction degree Leaching concentration Pb-contaminated soil Permeability coefficient Solidification/stabilization |
| ISSN号 | 1863-0650 |
| DOI | 10.1002/clen.201300345 |
| 英文摘要 | Compaction is a necessary step after the solidification/stabilization of contaminated soil. This study analyzed the effect of compaction degree on the solidification characteristics of Pb-contaminated soil. Batch tests were conducted to measure the permeability coefficient, unconfined compressive strength, Pb leaching concentration, and micromorphology of the solidified bodies compacted at different degrees (from 0.90 to 1.00 at an interval of 0.02). The permeability coefficient of the solidified bodies decreased with the increase in penetration time and compaction degree (from 1.80X10(-6) to 1.19X10(-7) cm/s). With an increase in compaction degree, the unconfined compressive strength of the solidified bodies increased from 2.20 to 4.90 MPa. In addition, failure strain decreased first and then increased before and after the compaction degree reached approximately 0.95. Pb in soil was effectively stabilized by cement because the leaching concentration of Pb in all the samples was < 2.5 mg/L. The leaching concentration of Pb increased first and then decreased before and after the compaction degree reached approximately 0.96, but pH values of lixivium decreased first and then increased. Compaction degree and the hydration products jointly determined the pore distribution and microscopic morphology of the solidified bodies, which comprised intra-particle, inter-particle, and intra-aggregate pores. The hydration products in the solidified bodies mainly consisted of ettringite and C-S-H. Low compaction degree was found to be beneficial for the formation of hydration products, the content and distribution of which jointly determined the leaching concentration of Pb. |
| WOS研究方向 | Science & Technology - Other Topics ; Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000342339600014 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3618]  |
| 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 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Xue, Qiang,Li, Jiang-shan,Liu, Lei. Effect of Compaction Degree on Solidification Characteristics of Pb-Contaminated Soil Treated by Cement[J]. CLEAN-SOIL AIR WATER,2014,42(8):1126-1132. |
| APA | Xue, Qiang,Li, Jiang-shan,&Liu, Lei.(2014).Effect of Compaction Degree on Solidification Characteristics of Pb-Contaminated Soil Treated by Cement.CLEAN-SOIL AIR WATER,42(8),1126-1132. |
| MLA | Xue, Qiang,et al."Effect of Compaction Degree on Solidification Characteristics of Pb-Contaminated Soil Treated by Cement".CLEAN-SOIL AIR WATER 42.8(2014):1126-1132. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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