固废超细掺合料对胶砂性能的影响  

Effect of Solid Waste Superfine Admixture on Properties of Mortar

作　　者：李富强 LI Fuqiang(China Railway 18th Bureau Group Second Engineering Co.Ltd,Tangshan 064000,China)

机构地区：[1]中铁十八局集团第二工程有限公司,河北唐山064000

出　　处：《新乡学院学报》2024年第12期52-56,共5页Journal of Xinxiang University

摘　　要：为解决工业固体废弃物合理化利用的难题,以甘肃天陇铁路祁连山地区的粉煤灰、炉渣及花岗岩石粉3种固体废弃物为研究对象,运用室内实验方法进行机械活化实验,研究固废超细掺合料对胶砂性能的影响。研究结果表明,机械粉磨60 min是胶砂机械活性效果的临界点,当粉煤灰、炉渣及花岗岩石粉的搭配比例为45∶20∶35时,胶砂的性能最佳。超细矿物掺合料比例对水泥胶砂的流动性和28 d抗压强度产生一定的影响,添加水泥熟料和脱硫石膏对优化复合胶砂的性能起到了积极的促进作用。In order to solve the problem of rational utilization of industrial solid wastes,three kinds of solid wastes included fly ash,slag and granite powder were studied in the Qilian Mountains area of Gansu Tianlong Railway.The mechanical activation experiment was carried out to study the effect of superfine solid waste admixture on the properties of mortar.It is found that the critical point to improve the activity is mechanical grinding for 60 minutes,and the best effect can be obtained when the ratio of fly ash,slag and granite powder is 45:20:35,and the increase of the proportion of superfine mineral admixtures will have an effect on the fluidity and 28-day compressive strength of cement mortar.The addition of cement clinker and desulphurization gypsum plays an active role to optimize the properties of compound mortar.

关 键 词：工业固体废弃物 水泥 胶砂 性能 超细掺合料 

分 类 号：TV431[水利工程—水工结构工程]