PVA可再分散性乳胶粉对混凝土电阻率和抗渗性影响  

Influence of PVA Re-dispersible Emulsion Powder on Electrical Resistivity and Resistivity of Permeability of Concrete

作　　者：朱瑶宏[1] 耿健[2] 王浩[2] 王发洲[2] 

机构地区：[1]宁波市轨道交通工程建设指挥部,宁波315000 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070

出　　处：《建材世界》2013年第1期35-37,61,共4页The World of Building Materials

基　　金：国家自然科学基金项目(51108415);宁波市创新团队项目(2011B81005)

摘　　要：采用四电极法,研究了PVA可再分散性乳胶粉对混凝土电阻率和抗渗性的影响。结果表明:PVA可再分散性乳胶粉对混凝土的电阻率和抗渗性有明显的改善作用。随着乳胶粉掺量的增加,混凝土的电阻率增加,抗渗性能提高,但混凝土的抗压强度有所下降,当乳胶粉掺量为3%时,强度下降非常明显。综合考虑,1%～1.5%为PVA可再分散性乳胶粉在高阻抗高抗渗混凝土制备过程中的最佳掺量。The influence of PVA re-dispersible emulsion powder on concrete electrical resistivity and permeability was studied. The results indicated that PVA re-dispersible emulsion powder plays an important role on the electrical resistivity and permeability. As the content of emulsion powder increasing, the electrical resistivity and resistivity of permeability increase, while the compressive strength decreases, when the content of emulsion powder reaches 3%, the compressive strength decreases dramatically. Therefore, the optimum content of PVA re-dispersible emulsion powder for concrete with high impedance and resistivity of permeability is from 1. 0% to 1.5%.

关 键 词：电阻率 抗渗性 抗压强度 乳胶粉 

分 类 号：U214.18[交通运输工程—道路与铁道工程]