Effects of fly ash and slag content on the solidification of river-dredged sludge
Effects of fly ash and slag content on the solidification of river-dredged sludge
复制标题
粉煤灰和炉渣含量对河道疏浚污泥固化的影响
DOI：
10.1080/1064119x.2019.1677827
复制
发表时间：
2019-10
影响因子：
2.2
通讯作者：
Shihu Gao
中科院分区：
文献类型：
--
作者：
Feiyu Liu;Chengan Zhu;Kejun Yang;Junfeng Ni;Jun Hai;Shihu Gao
摘要河道疏浚污泥具有含水率高、承载力和强度小的特点。在疏浚污泥中加入水泥、粉煤灰和矿渣作为组合固化剂，可以迅速降低其含水量，提高其强度。采用电镜、粒径分析、水比极限、含水量和直剪试验等方法，对不同配比固化剂的固化效果进行了实验研究。得到了不同组合固化剂在不同龄期的含水率和抗剪强度。我们发现存在一个最佳的固化剂组合。试验结果表明，随着粉煤灰和矿渣掺量的增加，固化污泥的含水量先减小后增大，抗剪强度先增大后减小，可获得最佳组合固化剂。在使用工业废渣作为固化剂时，需要考虑固化剂的负面影响，以便更好地控制用量，从而达到更好的固化效果。
Abstract River-dredged sludge has a high water content and minimal bearing capacity and strength. Adding cement, fly ash, and slag to dredged sludge as a combined curing agent can quickly reduce its water content and improve its strength. This study experimentally investigates the solidification effectiveness of different proportions of curing agents using methods including electron microscopy, particle size analysis, water ratio limit, and water content and direct shear tests. The water content and shear strength of different combined curing agents are obtained at different ages. We find that an optimum curing agent combination exists. With increases in fly ash and slag content, test results indicate that the water content of solidified sludge first decreases and then increases, whereas the shear strength first increases and then decreases, allowing an optimal combination curing agent to be obtained. When using industrial waste residue as curing agent, it is necessary to consider the negative effects of the curing agent to better control the dosage so as to achieve better curing effect.
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DOI：
10.1680/jgeen.17.00181
发表时间：
2019-03
期刊：
Proceedings of the Institution of Civil Engineers - Geotechnical Engineering
影响因子：
--
作者：
Xiaobing Li;Ran Zhao;H. Fu;Jun Wang;Yuanqiang Cai;Xiuqing Hu;Jie Zhou;Jun Hai
通讯作者：
Xiaobing Li;Ran Zhao;H. Fu;Jun Wang;Yuanqiang Cai;Xiuqing Hu;Jie Zhou;Jun Hai
影响因子：
4.4
作者：
V. Vu;Lei Yao;Ying-jie Wei
通讯作者：
V. Vu;Lei Yao;Ying-jie Wei
真空预压结合多重絮凝剂处理改善疏浚填方
影响因子：
7.4
作者：
Wang Jun;Huang Guo;Fu Hongtao;Cai Yuanqiang;Hu Xiuqing;Lou Xiaoming;Jin Yawei;Hai Jun;Ni Junfeng;Zou Jian
通讯作者：
Zou Jian
影响因子：
7.4
作者：
Celik, Ece;Nalbantoglu, Zalihe
通讯作者：
Nalbantoglu, Zalihe
影响因子：
8.8
作者：
Eung-ho Kim;Jinwoo Cho;S. Yim
通讯作者：
Eung-ho Kim;Jinwoo Cho;S. Yim