泵送钢渣混凝土配合比设计与试验研究  

Design and experimental study on the proportion of pumping steel slag concrete

作　　者：蓝天助 张红日 陆世斌 官少龙 韦能杰 LAN Tianzhu;ZHANG Hongri;LU Shibin;GUAN Shaolong;WEI Nengjie(Guangxi Traffic Science Research Institute Co.,Ltd.,Nanning 530000,China;Fang Chenggang Ganggong Infrastructure Investment Co.,Ltd.,Fangchenggang 538000,China)

机构地区：[1]广西交通科学研究院有限公司,广西南宁530000 [2]防城港港工基础投资公司,广西防城港538000

出　　处：《混凝土》2020年第10期106-109,共4页Concrete

基　　金：广西科学研究与技术开发计划“钢渣在近海公路路基处治中的应用技术研究”(桂科攻1598009-4);崇左市科技计划项目“锰渣的路用性能及无害化关键技术研究与应用”(崇科FA2019008);广西企茅公路建设有限公司“钢渣镍渣在沿海地区高等公路中的应用技术研究”。

摘　　要：钢渣是钢铁冶炼过程中产生的废渣,通过对钢渣的特性进行研究显示,钢渣骨料密度较大,表面粗糙,吸水率较大,力学性能与石料相似。在研究钢渣级配及吸水特性的基础上,探讨了泵送钢渣混凝土配合比设计要求以及配合比各参数的计算方法,对钢渣混凝土进行试配和强度验证,得出水∶水泥∶粉煤灰∶钢渣∶砂子∶减水剂=1∶1.51∶0.38∶6.18∶4.38∶0.0302的比例时,工作性能及强度皆满足设计要求,但由于钢渣骨料的吸水特性,泵送钢渣混凝土在实际应用中一泵车混凝土的施工时间不宜超过50 min。Steel slag is the waste of steel mill.The research on the characteristics of steel slag shows that the steel slag aggregate has high density,rough surface and high water absorption,and it′s mechanical properties are similar to stone.On the basis of study on the physical property and water absorption characteristics of steel slag,the design requirements of ratio of mixture and calculation methods of ratio of mixture of pumped steel slag concrete are discussed.The ratio of mixture and strength of steel slag concrete are tested and verified.It is concluded that when the proportion of water∶cement∶fly ash∶steel slag∶sand∶water reducer is equal to 1∶1.51∶0.38∶6.18∶4.38∶0.0302,the working performance and strength meet the design requirements,but due to the water absorption property of the steel slag bone,the construction time of a truck of pumped steel slag concrete in practical application should not exceed 50 minutes.

关 键 词：钢渣骨料 泵送混凝土 配合比设计 坍落度损失 

分 类 号：TU528.062[建筑科学—建筑技术科学]