Strength characteristic and micro-mechanism of organic dredged sludge solidified by cement incorporating sodium persulfate
文献类型：期刊论文
| 作者 | Wang, Shiquan4; He, Xingxing1,3,5; Cai, Guanghua2; Li, Jiangshan1; Qin, Huajin4; Ma, Yuanyuan4; Gong, Shunmei4; Lang, Lei1 |
| 刊名 | DEVELOPMENTS IN THE BUILT ENVIRONMENT
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 17页码:15 |
| 关键词 | Dredged sludge Organic matter Fulvic acid Persulfate Solidification/oxidization |
| DOI | 10.1016/j.dibe.2024.100323 |
| 英文摘要 | Cement-based solidification is a widely used sustainable technology for transforming waste dredged sludge (DS) into backfill materials. This study developed a novel solidification/oxidization synergistic (SOS) method, using Portland cement as a binder and sodium persulfate (SP) as an oxidant, for treating the organic DS with different fulvic acid (FA) content. The results demonstrated that adding SP could significantly improve the UCS of the cement-solidified DS doped with FA. When the FA content was 4%, the 28-day UCS of the sample with 25% cement content was only 160.5 kPa. The addition of 6% SP increased the UCS to 2225.5 kPa, which was 15.1 times that of the sample without SP. However, excessive SP hydrolyzed to produce a large amount of sulfuric acid, leading to a low pH value of the pore solution. This in turn hindered further persulfate activation and cement hydration, which was detrimental to the strength of cement-solidified DS. |
| 资助项目 | Key Projects of Natural Science Research in Colleges and Universities of Anhui Province[2022AH051388] ; National Natural Science Foundation of China[52209134] ; National Natural Science Foundation of China[41902286] ; Youth Science Foundation of Jiangsu Province of China[KB20220230] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001162430600001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40603]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | He, Xingxing |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Nanjing Forestry Univ, Sch Civil Engn, Nanjing 210037, Peoples R China 3.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China 4.Suzhou Univ, Natl Engn Res Ctr Coal Mine Water Hazard Controll, Sch Resources & Civil Engn, Suzhou 234000, Peoples R China 5.Jiangsu Inst Zoneco Soil Co Ltd, Yixing 214200, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Shiquan,He, Xingxing,Cai, Guanghua,et al. Strength characteristic and micro-mechanism of organic dredged sludge solidified by cement incorporating sodium persulfate[J]. DEVELOPMENTS IN THE BUILT ENVIRONMENT,2024,17:15. |
| APA | Wang, Shiquan.,He, Xingxing.,Cai, Guanghua.,Li, Jiangshan.,Qin, Huajin.,...&Lang, Lei.(2024).Strength characteristic and micro-mechanism of organic dredged sludge solidified by cement incorporating sodium persulfate.DEVELOPMENTS IN THE BUILT ENVIRONMENT,17,15. |
| MLA | Wang, Shiquan,et al."Strength characteristic and micro-mechanism of organic dredged sludge solidified by cement incorporating sodium persulfate".DEVELOPMENTS IN THE BUILT ENVIRONMENT 17(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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