Physicochemical properties of clayey deposits slurry treated by lime-activated ISSA and GGBS considering seawater salinity effect
文献类型：期刊论文
| 作者 | Sun, Zhao1,3; Chen, Wen-Bo2; Zhao, Run-Dong3; Li, Jiang-Shan4; Yin, Zhen-Yu3; Yin, Jian-Hua3; Chen, Yong-Gui1 |
| 刊名 | APPLIED CLAY SCIENCE
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 248页码:14 |
| 关键词 | Stabilisation/solidification Hong Kong marine deposits Industrial wastes reuse Salinity of seawater Metal leachability |
| ISSN号 | 0169-1317 |
| DOI | 10.1016/j.clay.2023.107237 |
| 英文摘要 | This study sheds light on the engineering and environmental performance of lime-activated incinerated sewage sludge ash (ISSA) and ground granulated blast furnace slag (GGBS) treated Hong Kong marine deposits (HKMD) slurry by stabilisation/solidification (S/S) technology, which is proposed using as fill materials in reclamation projects. The S/S performance of the treated HKMD with distilled water and seawater under different salinities was investigated. The results show that seawater could help S/S treated HKMD gain strength by using activated industrial wastes (ISSA and GGBS). The hydration and pozzolanic reactions between ISSA, GGBS, CaO and clayey compositions in HKMD make contributions to the strength development, porosity decrease and heavy metals stabilisation, which is supported by the characterization analysis including thermo-gravimetric (TG) analysis, mercury intrusion porosimetry (MIP) tests, nitrogen adsorption/desorption isotherms (NAI), scanning electron microscopy coupled with energy-dispersive spectrometry (SEM-EDS) and the leaching test of toxicity characteristic leaching procedure (TCLP). Seawater of 1.8% salinity (18 g/kg) is better than the distilled water and seawater of 3.6% salinity as a substrate solution in the S/S treated HKMD, because of the highest unconfined compressive strength and lowest porosity in the treated samples. The highest pH may account for its highest strength under the 1.8% salinity conditions. The S/S process could effectively stabilize the contaminants regardless of the curing time and the salinity of the mixing solution, and the leachates from the stabilized HKMD are environmentally safe and meet the requirement of standard in Hong Kong on the recycling treated soil. Therefore, recycling wastes-ISSA and GGBS with lime can be used as an appealing binder to stabilize/solidify marine deposits as environmental-friendly reusable materials in reclamation projects. |
| 资助项目 | Research Grants Council of Hong Kong Special Administrative Region Government of China[R5037-18F] ; Research Grants Council of Hong Kong Special Administrative Region Government of China[15210322] ; National Natural Science Foundation of China[42125701] ; Research Institute |
| WOS研究方向 | Chemistry ; Materials Science ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:001148930700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40475]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, Wen-Bo |
| 作者单位 | 1.Tongji Univ, Dept Geotech Engn, Sch Civil Engn, Shanghai, Peoples R China 2.Shenzhen Univ, Coll Civil & Transportat Engn, Shenzhen, Guangdong, Peoples R China 3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Zhao,Chen, Wen-Bo,Zhao, Run-Dong,et al. Physicochemical properties of clayey deposits slurry treated by lime-activated ISSA and GGBS considering seawater salinity effect[J]. APPLIED CLAY SCIENCE,2024,248:14. |
| APA | Sun, Zhao.,Chen, Wen-Bo.,Zhao, Run-Dong.,Li, Jiang-Shan.,Yin, Zhen-Yu.,...&Chen, Yong-Gui.(2024).Physicochemical properties of clayey deposits slurry treated by lime-activated ISSA and GGBS considering seawater salinity effect.APPLIED CLAY SCIENCE,248,14. |
| MLA | Sun, Zhao,et al."Physicochemical properties of clayey deposits slurry treated by lime-activated ISSA and GGBS considering seawater salinity effect".APPLIED CLAY SCIENCE 248(2024):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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