低电阻率、高耐久性碳纤维导电混凝土性能研究  

Study on properties of carbon fiber-based conductive concrete with low resistivity and high durability

作　　者：鲍俊立 武东亚 刁飞 翟礼明 刘宁超 王旭 罗婷 BAO Junli;WU Dongya;DIAO Fei;ZHAI Liming;LIU Ningchao;WANG Xu;LUO Ting(Electric Power of Henan,Zhengzhou 450018,China;Pingdingshan Power Supply Company of State Grid Henan Electric Power Company,Pingdingshan 467000,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]国网河南省电力公司,河南郑州450018 [2]国网平顶山供电公司,河南平顶山467000 [3]清华大学土木工程系,北京100084

出　　处：《混凝土》2025年第1期69-73,79,共6页Concrete

基　　金：国家电网有限公司科技项目(SGHAPD00JJGC2200727)。

摘　　要：选取碳纤维作为导电相制备导电混凝土,研究碳纤维长度,掺量等对导电混凝土的导电性能及力学性能的影响。研究结果表明,增加纤维长度及掺量有利于导电性能的提升,但对力学性能及耐久性能有不利影响。因此,研究了矿渣,粉煤灰微珠对碳纤维导电混凝土的耐久性能的影响。研究结果表明:选取纤维长度12 mm,纤维体积掺量0.77%,粉煤灰微珠20%替代水泥后混凝土抗压强度达到C45强度等级,电阻率为155Ω·m,饱水孔隙率约为11%,氯离子渗透等级达到“低”等级,表现出低电阻率、高耐久性特征。The carbon fiber(CF)was used as the conductive filler to prepare electrically conductive concrete(ECC),and the effects of carbon fiber length and content on the conductivity and mechanical properties of ECC were investigated.The results show that increase the length and content of CF are beneficial to the improvement of electrical conductivity,but have disadvantage on mechanical properties and durability.Hence,the influence of different content of GGBS and FAM on the conductivity and durability of ECC were investigated.It is found that when fiber length is 12 mm,fiber volume content is 0.77%,and the content of FAM is 20%,the compressive strength of ECC reaches C45 strength level,the resistivity is 155Ω·m,the saturated porosity is about 11%,and the chloride ion permeability level reaches“low”level,showing the characteristics of low resistivity and high durability.

关 键 词：碳纤维 导电混凝土 矿渣 粉煤灰微珠 导电性 耐久性 

分 类 号：TU528.572[建筑科学—建筑技术科学]