高吸水性树脂快速改善废弃泥浆流动性试验  

Experimental Study on Superabsorbent Resin to Rapidly Improving the Fluidity of Waste Slurry

作　　者：余康 刘俊新[1] 李晓阁 黄勃翔 任天彬 YU Kang;LIU Junxin;LI Xiaoge;HUANG Boxiang;REN Tianbin(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;China Railway Construction Group Co.,Ltd.,Beijing 100043,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]中铁建设集团有限公司,北京100043

出　　处：《西南科技大学学报》2024年第3期57-62,70,共7页Journal of Southwest University of Science and Technology

基　　金：十三五国家重点研发计划项目(2017YFC0804600)。

摘　　要：高含水率、高流动性且低强度的工程废弃泥浆的有效利用是亟待解决的工程实际问题。利用高吸水性树脂材料对废弃泥浆进行处理,进行了废弃泥浆流动性试验,探究不同初始含水率、不同质量浓度吸水树脂下废弃泥浆流动性变化规律。结果表明:泥浆流动性随着泥浆初始含水率的增加而增加,试验范围内的泥浆初始含水率与流动值拟合曲线呈二次函数关系;在吸水树脂质量浓度为0~10 g/L范围内,泥浆流动性随着吸水树脂的质量浓度增加而降低,而在10 g/L后泥浆呈塑性固化状态;在10 min搅拌时间后,泥浆流动值变化处于较为稳定状态(流动值小于15 cm),具备可塑性,使得泥浆转运或再利用过程快速便捷。影响泥浆流动性的关键因素是泥浆初始含水率和吸水树脂的质量浓度,搅拌时间也存在一定影响。The effective utilization of engineering waste slurry with high water content,high fluidity,and low strength is a practical engineering problem that needs to be solved urgently.Utilizing highly absorbent resin material to treat waste slurry,the waste slurry fluidity test was carried out to investigate the change rule of waste slurry fluidity under different initial water content and different quality concentrations of absorbent resin.The results show that slurry fluidity increases with the increase of slurry initial water content,and the fitting curve of slurry initial water content and flow value in the test range is a quadratic function;Slurry fluidity decreases with the increase of the mass concentration of water absorbent resin within the range of 0-10 g/L,and the slurry is in the state of plastic curing after 10 g/L;After 10 min of mixing time,the mud flow value is in a relatively stable state(the flow value is less than 15 cm)and is with plasticity,which makes the mud transfer or reuse process become fast and easy.The key factors affecting the flowability of the slurry are the initial water content of the slurry and the quality concentration of the water-absorbing resin,and the mixing time also has a specific effect.

关 键 词：工程废弃泥浆 高吸水性树脂 含水率 质量浓度 流动性 吸水机理 

分 类 号：X799.1[环境科学与工程—环境工程] TQ324.8[化学工程—合成树脂塑料工业]