导电碳纤维混凝土性能的试验研究  

Test on properties of conductive carbon fiber reinforced concrete

作　　者：孙建虎[1] 石少卿[1] 刘颖芳[1] 张同周 陈取锋 

机构地区：[1]后勤工程学院军事建筑工程系,重庆401311 [2]西藏军区日喀则军分区,西藏日喀则857000

出　　处：《混凝土》2012年第7期74-76,共3页Concrete

基　　金：总后基建营房部资助项目(AY210J001)

摘　　要：在防雷接地工程中采用低电阻率的导电材料有助于降低接地电阻值,改善防雷效果。采用试验研究了碳纤维掺量、龄期等对混凝土电阻率和力学性能的影响,用统计方法分析了渗滤现象。试验结果表明:材料的电阻率随着碳纤维掺量的增加而降低,随龄期增长而增长,电阻率最低可达Ω.m级,碳纤维掺量的上渗滤阈值在0.3%左右,下渗滤阈值在0.5%左右。碳纤维的掺入可以降低混凝土立方体抗压强度,但可以提高劈裂抗拉强度。Usinglow resistivity conductive material helps to reduce grounding resistance and improve lightning protection effects in Protection against lightning and grounding engineering.Effect of carbon fiber mixing amount and maintaining age on resistivity and mechanical properties of concrete was tested and the percolation phenomenon was analyzed using statistical analysis method.The results show that：the resistivity increases with the carbon fiber content decreases and with maintaining age grows,the lowest resistivity can be Ω.m level.The upper percolation threshold of carbon fiber content is about 0.3% and the lower one is about 0.5% .Incorporation of carbon fiber can reduce the concrete cube compressive strength,but can improvesplitting tensile strength.

关 键 词：混凝土 碳纤维 电阻率 力学性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]