苏州混凝土水泥制品研究院有限公司

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石墨和碳纤维对混凝土导电性能的影响及机理分析
Influence and Mechanism Analysis of Graphite and Carbon Fiber on Conductivity of Concrete
2023年第6期
导电混凝土;碳纤维;石墨;电阻率;导电性能
Conductive concrete; Carbon fiber; Graphite; Resistivity; Conductivity
2023年第6期
10.19761/j.1000-4637.2023.06.054.06
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
1.苏州三佳交通工程有限公司 江苏省绿色高性能砼桥隧构件工程技术研究中心,江苏 苏州 215001;2.苏州混凝土水泥制品研究院有限公司 江苏省高耐久混凝土工程技术研究中心,江苏 苏州 215004;3.汉中中材混凝土有限公司,陕西 汉中 723100

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.

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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.
英文名 : Influence and Mechanism Analysis of Graphite and Carbon Fiber on Conductivity of Concrete
刊期 : 2023年第6期
关键词 : 导电混凝土;碳纤维;石墨;电阻率;导电性能
Key words : Conductive concrete; Carbon fiber; Graphite; Resistivity; Conductivity
刊期 : 2023年第6期
DOI : 10.19761/j.1000-4637.2023.06.054.06
文章编号 :
基金项目 :
作者 : 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
单位 : 1.苏州三佳交通工程有限公司 江苏省绿色高性能砼桥隧构件工程技术研究中心,江苏 苏州 215001;2.苏州混凝土水泥制品研究院有限公司 江苏省高耐久混凝土工程技术研究中心,江苏 苏州 215004;3.汉中中材混凝土有限公司,陕西 汉中 723100

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
参数
结论
参考文献
引用本文

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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(1)单掺碳纤维或石墨时,试件的电阻率随着碳纤维或石墨掺量的增加而减小。其中,碳纤维对混凝土导电性能的提高效果比石墨好。
(2)复掺碳纤维与石墨时,与同条件下的空白组N2和单掺组试件相比,复掺组试件的电阻率明显降低很多,说明复掺碳纤维与石墨对混凝土导电性能的提高效果更好,最佳复掺比例为6%石墨+1.0%碳纤维。
(3)随着水胶比、施加电压的增加,试件的电阻率减小;随着养护龄期的增加,试件的电阻率增大;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。
 

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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.

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