碳纤维混凝土导电升温性能试验研究  

Conductive and heat property research for carbon fiber concrete

作　　者：胡天文 张桂琛 HU Tianwen;ZHANG Guichen(China Railway Engineering Co. ,Ltd. ,Beijing Airport Engineering Branch,Beijing 102308 ,China;Beijing Jingang Road Engineering Construction Co. ,Ltd. , Beijing 100071, China)

机构地区：[1]中铁北京工程局集团有限公司机场工程分公司,北京102308 [2]北京金港场道工程建设股份有限公司,北京100071

出　　处：《四川建筑科学研究》2018年第6期96-100,共5页Sichuan Building Science

摘　　要：通过在混凝土中掺入短切碳纤维,研究了其导电升温规律。发现掺碳纤维有利于混凝土抗压强度的提高。随着碳纤维含量增加,混凝土电阻首先急剧下降,之后放缓并趋于稳定,最佳碳纤维含量在0. 7%左右。施加交流电压相比直流电压,高电压幅值相比低电压幅值,碳纤维混凝土的电阻减小,升温效果更明显。对于大体积混凝土块,内部温度持续升高且未有稳定趋势。By incorporating short-cut carbon fibers in concrete,the law of the temperature rise of the conductive material was studied.It is found that the mixed carbon fiber is beneficial to the compressive strength of concrete.With the increase of carbon fiber content,the electrical resistance of concrete first drops sharply,then slows down and tends to stabilize.The optimum carbon fiber content is around0.7%.The resistance of the carbon fiber concrete is lower,the warming effect is more obvious under AC and higher voltage.For the large volume concrete,the internal temperature continues to rise and there is no stable trend.

关 键 词：碳纤维混凝土 碳纤维含量 抗压强度 升温曲线 

分 类 号：TU528.58[建筑科学—建筑技术科学]