钢渣粉对混凝土凝结时间及强度的影响试验研究  

Experimental Study on Influence of Steel Slag Powder on Setting Time and Strength of Concrete

作　　者：柴天红 曾亮 胡彪 Chai Tianhong;Zeng Liang;Hu Biao(Jiangxi Building Materials Scientific Research and Design Institute,Nanchang,Jiangxi 330031)

机构地区：[1]江西省建筑材料工业科学研究设计院,江西南昌330001

出　　处：《江西建材》2022年第8期22-24,共3页Jiangxi Building Materials

基　　金：江西省重点研发计划项目“利用江西省大宗固废制备低碳水泥关键技术研究与应用”(20214BBG74003)。

摘　　要：研究利用不同掺量的钢渣粉替代混凝土配合比中的矿粉进行试验,测试了混凝土拌合物的流动性、凝结时间和混凝土强度的变化规律。试验结果表明,当利用钢渣替代混凝土中的矿粉时,可有效降低钢渣的单位用水量,增大混凝土拌合物的流动性,但会延长其终凝时间,并降低混凝土的抗压强度;当钢渣粉掺量在50%以上,钢渣掺量越多,强度下降越明显;混凝土配合比中掺入缓凝型高效减水剂时,掺入钢渣粉的混凝土凝结时间较矿粉偏长。The experimental study used different amounts of steel slag powder to replace the mineral powder in the concrete, tested the mobility and setting time of concrete mix Expansion, tested the concrete strength. The test results show that when steel slag is used to replace mineral powder in concrete, the unit water consumption of steel slag can be effectively reduced, Increase the mobility of concrete mixture,but its final setting time will be prolonged, and the compressive strength of concrete will be reduced. When the steel slag content is above 50%,The more the amount is, the more obvious the strength decline is;when the retarding type superplasticizer is added to the concrete mix ratio,the setting time of the concrete mixed with steel slag powder is longer than that of the mineral powder.

关 键 词：钢渣 混凝土 抗压强度 凝结时间 

分 类 号：TU528[建筑科学—建筑技术科学]