电石渣激发矿渣-尾矿粉复合固废基胶凝材料性能试验研究
Experimental study on properties of slag and tailing powder composite solid waste based cementitious materials stimulated by calcium carbide slag
关键词：
固废基胶凝材料；矿渣；电石渣；水化热；力学性能；流动度；水化热；砂浆；低碳
Key words：
Solid waste based cementitious material; Slag; Calcium carbide slag; Hydration heat; Mechanical property; Fluidity; Hydration heat; Mortar; Low-carbon
刊期：
2025年第9期
DOI：
10.19761/j.1000-4637.2025.09.093.04
文章编号：
基金项目：
山东省自然科学基金面上项目（ZR2021ME215）。
作者：
刘志强1，王 越2，杨 斌1，卜令来2，王 林2，管延华2
单位：
1.山东东青高速有限公司，山东 东营 257092；2.山东大学 齐鲁交通学院，山东 济南 250000
摘要
摘 要：以电石渣作为碱激发剂，采用矿渣和黄金尾矿粉部分取代水泥制备了电石渣激发矿渣-尾矿粉复合固废基胶凝材料砂浆，并研究了砂浆的流动度、强度和净浆水化热。结果表明：随着电石渣掺量的增加，砂浆的流动度降低，抗压强度先增加后降低，抗折强度增加，当电石渣掺量为8%时，砂浆的抗压强度最大；电石渣提供的碱性环境会促进矿渣、尾矿粉中活性成分的火山灰反应，对胶凝材料体系的初始水化放热速率有明显的激发效果，整个胶凝材料体系水化速率显著加快，同时，累计水化放热量也增加。
Abstract: A composite solid waste based cementitious material mortar was prepared by using calcium carbide slag as an alkali activator and partially replacing cement with gold tailings powder and slag. The fluidity, strength of mortar, and hydration heat of slurry were studied. The results show that with the increase of calcium carbide slag content, the fluidity of the mortar decreases, the compressive strength first increases and then decreases, and the flexural strength increases. When the calcium carbide slag content is 8%, the compressive strength of the mortar is the highest. The alkaline environment provided by calcium carbide slag promotes the volcanic ash reaction of active components in slag and tailings powder, which has a significant stimulating effect on the initial hydration heat release rate of the cementitious material system. The hydration rate of the entire cementitious material system is significantly accelerated, and the cumulative hydration heat release increases.
结论
（1）随着电石渣掺量的增加，砂浆的流动度降低，抗压强度先增加后降低，抗折强度增加，当电石渣掺量为8%时，砂浆的抗压强度最大。
（2）电石渣提供的碱性环境会促进矿渣、尾矿粉中活性成分的火山灰反应，对胶凝材料体系的初始放热速率有明显的激发效果，整个胶凝材料体系水化速率显著加快，同时，累计水化放热量也增加。
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引用本文
刘志强,王越,杨斌,等.电石渣激发矿渣-尾矿粉复合固废基胶凝材料性能试验研究[J].混凝土与水泥制品,2025(9):93-96.
LIU Zhiqiang, WANG Yue, YANG Bin,Experimental study on properties of slag and tailing powder composite solid waste based cementitious materials stimulated by calcium carbide slag[J].China Concrete and Cement Products,2025(9):93-96.
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