掺钢渣混凝土开裂机理研究  

Study on Cracking Mechanism of Steel Slag Concrete

作　　者：刘磊[1] 刘小艳[1] 张玉梅[1] 梁涛[1] 李田雨[1] 

机构地区：[1]河海大学力学与材料学院,江苏南京210098

出　　处：《粉煤灰综合利用》2017年第2期6-11,共6页Fly Ash Comprehensive Utilization

基　　金："十二五"国家支撑计划(2012BA B03B02);江苏省科技计划项目(BE2015706)

摘　　要：钢渣作为混凝土骨料应用可能会引起水泥混凝土的稳定性不良的问题,例如混凝土开裂。本文选择了两个批次不同龄期的掺矿渣混凝土试样进行试验,进行了SEM试验从钢渣混凝土的微观形貌寻找引起钢渣混凝土开裂的原因,因为钢渣中含有的游离氧化钙和游离氧化镁等组分发生反应生成氢氧化钙等体积膨胀性产物最终导致混凝土开裂。Steel slag as a concrete aggregate application may cause problems with poor stability of cement concrete, such as concrete cracking. In this paper, two batches of concrete samples with different ages were selected for the experiment. The reason of the cracking of steel slag caused by the microstructure of steel slag was studied by SEM. The free calcium oxide and free magnesium oxide contained in steel slag And other components of the reaction to produce calcium hydroxide and other volume of expansion products eventually lead to concrete cracking.

关 键 词：矿渣 混凝土 开裂 扫描电镜 

分 类 号：TU528[建筑科学—建筑技术科学]