李金龙1,张 蕊2,刘 华3,骆静静2,顾永明1,丁 剑1,张立力2,蒋 涛2,曹鑫铖2
李金龙,张蕊,刘华,等.石墨和碳纤维对混凝土导电性能的影响及机理分析[J].混凝土与水泥制品,2023(6):54-59.
LI J L,ZHANG R,LIU H,et al.Influence and Mechanism Analysis of Graphite and Carbon Fiber on Conductivity of Concrete[J].China Concrete and Cement Product,2023(6):54-59.
石墨和碳纤维对混凝土导电性能的影响及机理分析
李金龙1,张 蕊2,刘 华3,骆静静2,顾永明1,丁 剑1,张立力2,蒋 涛2,曹鑫铖2
李金龙,张蕊,刘华,等.石墨和碳纤维对混凝土导电性能的影响及机理分析[J].混凝土与水泥制品,2023(6):54-59.
LI J L,ZHANG R,LIU H,et al.Influence and Mechanism Analysis of Graphite and Carbon Fiber on Conductivity of Concrete[J].China Concrete and Cement Product,2023(6):54-59.
摘 要:采用石墨和碳纤维作为导电相材料制备了导电混凝土,研究了导电相材料的掺量和掺入方式、水胶比、养护龄期以及施加电压对导电混凝土导电性能的影响。结果表明:单掺时,随着石墨或碳纤维掺量的增加,试件的电阻率降低,导电性能提高;复掺石墨与碳纤维试件的电阻率比单掺石墨或碳纤维的试件更低,导电性能更好,最佳复掺比例为石墨6%+碳纤维1.0%;试件的电阻率随着水胶比、施加电压的增加而减小,随着养护龄期的增加而增大;与单掺组试件相比,复掺组试件的电阻率受水胶比、施加电压和养护龄期的影响相对较小。
Abstract: Conductive concrete was prepared by using graphite and carbon fiber as conductive phase materials. The effects of the content and incorporation method of conductive phase materials, water-cement ratio, curing time, and applied voltage on the conductivity of conductive concrete were studied. The results show that when single incorporated, with the increase of graphite or carbon fiber content, the resistivity of the specimen decreases and the conductivity improves. The resistivity of the composite incorporated graphite and carbon fiber specimen is lower than that of the single incorporated graphite or carbon fiber specimen, and the conductivity is better, and the optimal composite ratio is graphite of 6% and carbon fiber of 1.0%. The resistivity of the specimen decreases with the increase of water-cement ratio and applied voltage, but increases with the increase of curing time. Compared with single incorporated group specimen, the resistivity of composite incorporated group specimen is relatively less affected by the water-cement ratio, applied voltage and curing time.
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