Li Shiliang, Gao Yingchao, Zhang Rongjun, Zhao Zhekun
China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China.
School of Civil Engineering, Wuhan University, Wuhan 430072, China.
Materials (Basel). 2024 Oct 12;17(20):4992. doi: 10.3390/ma17204992.
The disposal and reutilization of the enormous amounts of slurry-like mud (MS) dredged from navigation channel construction, ecological dredging, and other construction activities have been receiving increasing attention. In this paper, a flocculation-solidification-high-pressure filtration combined method (FSHCM) is used to treat MS, and the consolidation characteristics of The SHCM-treated MS are studied by conducting a series of one-dimensional consolidation compression tests. Various parameters, including the dosage of the curing agent, initial water content, and dry weight of the MS, are systematically analyzed to evaluate their influence on the consolidation behavior. The experimental results demonstrate that higher curing agent and initial water contents enhance the structural yield stress and compressive resistance, while increased dry weight decreases the structural yield stress but increases the compressive strain and void ratio. As the curing age increases, the ability of the FSHCM-treated MS to resist compressive deformation is further enhanced. In addition, the compressibility of the mud cake samples changes significantly at the yield point. This study has practical guiding significance for the optimal design and long-term application of FSHCM-treated MS.
从航道建设、生态疏浚等工程活动中疏浚出的大量泥浆状淤泥（MS）的处置与再利用日益受到关注。本文采用絮凝 - 固化 - 高压过滤联合法（FSHCM）处理MS，并通过开展一系列一维固结压缩试验研究经FSHCM处理的MS的固结特性。系统分析了固化剂用量、初始含水量和MS干重等各种参数，以评估它们对固结行为的影响。试验结果表明，较高的固化剂和初始含水量会提高结构屈服应力和抗压强度，而增加干重会降低结构屈服应力，但会增加压缩应变和孔隙率。随着养护龄期的增加，经FSHCM处理的MS抵抗压缩变形的能力进一步增强。此外，泥饼样品在屈服点处的压缩性变化显著。本研究对FSHCM处理MS的优化设计和长期应用具有实际指导意义。
