Enhanced early strength and microstructural stability of dredged sludge using CPCS curing agent
文献类型：期刊论文
| 作者 | Dong, Meng4,5; Wen, Xiaodong5; Lang, Lei3; Jin, Jiaxu2; Li, Jiang-Shan1,4 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2025-03-07 |
| 卷号 | 466页码:16 |
| 关键词 | Dredged sludge Curing agent Mechanical properties Microscopic properties Solidification mechanism |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2025.140219 |
| 英文摘要 | The efficient disposal of dredged sludge (DS) has emerged as a critical geo-environmental engineering challenge, exacerbated by constraints on landfilling capacity and significant environmental impacts. This study undertook a comprehensive series of tests to elucidate the effects of a novel curing agent (CPCS) on both the mechanical and microscopic properties of solidified DS. A comparative analysis was conducted to evaluate the unconfined compressive strength (UCS) and splitting tensile strength (STS) of solidified DS utilizing CPCS, calcium sulfoaluminate (CSA), and ordinary portland cement (OPC) as binding agents. X-ray diffraction (XRD), scanning electron microscopy (SEM), and mercury intrusion porosimetry (MIP) were employed to comprehensively assess the microstructural features and pore characteristics. The results showed that CPCS-solidified DS exhibited rapid, early, and superior strength, with UCS and STS reaching up to 3302 kPa and 532 kPa. The deformation modulus of DS solidified with CPCS, CSA, and OPC demonstrated a robust linear correlation with UCS, exhibiting correlation coefficients of 19.0, 21.2, and 22.3, respectively. The CPCS-solidified DS exhibited an increased concentration of hydration products, notably ettringite and gel phases, leading to the formation of a more compact microstructure. The pore structure of solidified DS was primarily characterized by a predominance of mesopores and small pores, wherea the OPC-solidified DS exhibited a notably higher occurrence of macropores. The principal findings of this investigation elucidate a robust methodology for achieving early strength and expedited stabilization of DS, particularly within the context of practical engineering applications. |
| 资助项目 | Hubei Province key research and development plan[2023BCB074] ; Ningbo key research and development plan[2023Z148] ; Ningbo key research and development plan[2024Z258] ; Special Research Assistant Program of the Chinese Academy of Sciences, Ningbo university of technology research start-up fund |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001423172800001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37083]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Jiang-Shan |
| 作者单位 | 1.IRSM CAS HK PolyU Joint Lab Solid Waste Sci, Hung Hom, Kowloon, Hong Kong, Peoples R China 2.Liaoning Tech Univ, Sch Civil Engn, Fuxin 123000, Liaoning, Peoples R China 3.Yunnan Univ, Sch Architecture & Planning, Kunming 650500, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 5.Ningbo Univ Technol, Sch Civil & Transportat Engn, Ningbo 315211, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Meng,Wen, Xiaodong,Lang, Lei,et al. Enhanced early strength and microstructural stability of dredged sludge using CPCS curing agent[J]. CONSTRUCTION AND BUILDING MATERIALS,2025,466:16. |
| APA | Dong, Meng,Wen, Xiaodong,Lang, Lei,Jin, Jiaxu,&Li, Jiang-Shan.(2025).Enhanced early strength and microstructural stability of dredged sludge using CPCS curing agent.CONSTRUCTION AND BUILDING MATERIALS,466,16. |
| MLA | Dong, Meng,et al."Enhanced early strength and microstructural stability of dredged sludge using CPCS curing agent".CONSTRUCTION AND BUILDING MATERIALS 466(2025):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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