矿物掺合料对低水胶比水泥基材料塑性开裂的影响  

Effect of mineral admixtures on plastic cracking of cement-based materials with low water-binder ratio

作　　者：潘竟盛 刘建忠[1] 张倩倩[1] 

机构地区：[1]江苏苏博特新材料股份有限公司,江苏南京210008

出　　处：《江苏建材》2018年第1期25-28,共4页Jiangsu Building Materials

基　　金：国家自然科学基金项目(51578269)

摘　　要：采用平板约束法并结合图像分析技术研究了矿物掺合料对低水胶比水泥基材料塑性开裂的影响。结果表明:硅灰显著增大了低水胶比水泥基材料的塑性开裂面积和平均宽度,通过复掺粉煤灰或磨细矿粉均可大幅度降低低水胶比水泥基材料塑性开裂风险。The effect of mineral admixture on the plastic cracking of cement-based materials with low water- binder ratio is investigated by the slab constraint method and the image analysis technique. The results show that crack area and average crack width of cement-based materials significantly increase by the addition of silica fume, and the plastic cracking risk largely reduces by adding fly ash or slag.

关 键 词：水泥基材料 矿物掺合料 低水胶比 塑性开裂 平板约束法 

分 类 号：TU528[建筑科学—建筑技术科学]