粉煤灰“微珠”在高性能混凝土中的应用基础研究  

Research on Application of Fly Ash Microbead in High Performance Concrete

作　　者：谢小龙[1] 张倩倩[1] 杜广磊[1] 周武[1] 王丽交[1] 蒋元海[1] 

机构地区：[1]嘉兴学院建筑与工程学院,浙江314001

出　　处：《中国包装科技博览（混凝土技术）》2012年第6期13-16,共4页China Science and Technology Review

基　　金：本文得到嘉兴学院2011年度大学生SRT重点项目的经费资助.

摘　　要：在保持胶凝材料总用量不变情况下，研究了用纳米粉煤灰“微珠”等量替代10％、20％、30％、40％、50％水泥量后C60混凝土的和易性、抗压强度和耐久性的变化情况。实验结果表明，当“微珠”掺入后，混凝土单位用水量下降，且随着“微珠”掺量的增加，用水量下降越明显；28d抗氯离子渗透性能得到明显改善，混凝土强度提高，且当“微珠”取代量为20％时，混凝土强度提高最大，提高幅度达2个等级。Research C60 concrete, under the situation that keep the dosageof gelled material unchanged, amount for 10%. 20%. 30%. 40%, 50% cementwith fly ash microbead and then measure the change of it peaceability, compression strength, durability. The experimental results show that, unit water consumption of the concrete will descend when the ＂microbead＂ was mixed, moreover, unit water consumption of the concrete descend obviously along with thedosageincrease; concrete28d anti-chloride ion penetration performance improvedobviously, strength increased. When ＂microbead＂ replace content is 20%, the largest increase strength of concrete, the increase was up to 2 grade.

关 键 词：粉煤灰“微珠” 掺量 耐久性 抗压强度 混凝土 

分 类 号：TU528.31[建筑科学—建筑技术科学]