摘要
着重介绍从提高钢渣利用率出发,采用"复合化"的技术途径,在以大掺量钢渣粉水泥基材料中掺加聚乙烯醇(PVA)纤维以改善其性能,制成大掺量钢渣粉超高韧性水泥基复合材料。试验中采用控制变量的方法,在高韧性复合材料典型配合比的基础上,选用两组工程常用的水胶比(0.25、0.35),分梯度掺入不同含量的钢渣粉(0~80%);通过抗压强度试验、薄板四点弯曲试验来研究掺钢渣粉高韧性水泥基复合材料的基本力学性能以及裂缝控制能力。结果显示钢渣粉高韧性水泥基复合材料在掺量达到80%时可以表现出较大的韧性特征和裂缝控制能力;同时,从节能减排的角度考虑,也证明了钢渣粉在高韧性水泥基材料中大规模利用的可行性。
A new kind of ultra-high toughness cementitious composite containing high volume steel slag is manufactured in this work.The main objective is either to gain a high performance cementitious material or to improve the utilization of the industrial waste,steel slag,which is hard to deal with.Control variable method is used in the test.Two series of ultra-high toughness cementitious composite with different water to binder ratio,0.25 and 0.35,which are commonly used in the field,have been investigated and the content of steel slag powder is between 0 to 80%.The basic mechanical properties and crack control capacity are studied according to cubic compressive test and four point bending test.The test results indicated that ultra-high toughness cementitious composite containing high volume steel slag powder perform good toughness and crack control capacity when the content of steel slag powder up to 80%.Meanwhile,in the point of energy saving and emission reduction,it′s also proved that it is feasible to use high volume steel slag in producing ultra-high toughness cementitious composite.
作者
吴鹏
韦选纯
蔡新华
苏骏
汤盛文
WU Peng;WEI Xuanchun;CAI Xinhua;SU Jun;TANG Shengwen(School of Civil and Environmental Engineering,Hubei University of Technology,State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan Universit)
出处
《混凝土》
CAS
北大核心
2018年第7期81-84,共4页
Concrete
基金
国家自然科学基金(51579195)
关键词
钢渣
韧性
水泥基复合材料
节能减排
steel slag
toughness
cementitious composites
energy saving and emission reduction
