直接电养护对混凝土性能的影响_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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直接电养护对混凝土性能的影响

Effect of Direct Electric Curing on Properties of Concrete

2023年第4期

直接电养护；导电相材料；混凝土；电阻率；抗压强度；孔结构

Direct electric curing; Conductive phase material; Concrete; Resistivity; Compressive strength; Pore structure

2023年第4期

10.19761/j.1000-4637.2023.04.054.05

中国建材集团关键核心技术攻关“揭榜挂帅”项目（2021HX0506）。

张蕊1，李金龙2，邓稚川1，刘华3，张立力1，徐洋2，蒋涛1，曹鑫铖1，丁剑2

1.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；2.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；3.汉中中材混凝土有限公司，陕西汉中 723100

张蕊1，李金龙2，邓稚川1，刘华3，张立力1，徐洋2，蒋涛1，曹鑫铖1，丁剑2

张蕊,李金龙,邓稚川,等.电养护对混凝土性能的影响[J].混凝土与水泥制品,2023(4):54-58.

ZHANG R,LI J L,DENG Z C,et al.Effect of Electric Curing on Properties of Concrete[J].China Concrete and Cement Products,2023(4):54-58.

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摘要：以石墨和碳纤维为导电相材料，研究了石墨掺量（2%、4%）和养护方式（标准养护、直接电养护）对混凝土抗压强度和微观结构的影响，分析了直接电养护时间与试件内部温度和电阻率之间的关系。结果表明：掺入适量导电相材料可以改善混凝土的力学性能，提高混凝土的导电性能；直接电养护可以提高混凝土的内部温度，促进水化反应进程，提高混凝土的抗压强度，且对早期抗压强度的提高效果更大；随着直接电养护时间的增加，混凝土的电阻率不断增大，导电性能降低；直接电养护可以有效减小混凝土中凝胶孔的孔径，改善混凝土的孔结构。 Abstract: Using graphite and carbon fiber as conductive phase materials, the effects of graphite content (2%, 4%) and curing methods (standard curing, direct electric curing) on the compressive strength and microstructure of concrete were studied, and the relationship between the direct electric curing time and the internal temperature and resistivity of the specimen was analyzed. The results show that the mechanical properties and electrical conductivity of concrete can be improved by adding proper content of conductive phase materials. Direct electric curing can increase the internal temperature of concrete, thus promoting the hydration reaction process, improving the compressive strength of concrete, and has a greater improvement effect on the early compressive strength. With the increase of direct electric curing time, the resistivity of concrete increases continuously and the electrical conductivity decreases. Direct electric curing can effectively reduce the pore size of gel pores in concrete and improve the pore structure of concrete.

英文名 : Effect of Direct Electric Curing on Properties of Concrete

刊期 : 2023年第4期

关键词 : 直接电养护；导电相材料；混凝土；电阻率；抗压强度；孔结构

Key words : Direct electric curing; Conductive phase material; Concrete; Resistivity; Compressive strength; Pore structure

刊期 : 2023年第4期

DOI : 10.19761/j.1000-4637.2023.04.054.05

文章编号 :

基金项目 : 中国建材集团关键核心技术攻关“揭榜挂帅”项目（2021HX0506）。

作者 : 张蕊1，李金龙2，邓稚川1，刘华3，张立力1，徐洋2，蒋涛1，曹鑫铖1，丁剑2

单位 : 1.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；2.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；3.汉中中材混凝土有限公司，陕西汉中 723100

张蕊1，李金龙2，邓稚川1，刘华3，张立力1，徐洋2，蒋涛1，曹鑫铖1，丁剑2

张蕊,李金龙,邓稚川,等.电养护对混凝土性能的影响[J].混凝土与水泥制品,2023(4):54-58.

ZHANG R,LI J L,DENG Z C,et al.Effect of Electric Curing on Properties of Concrete[J].China Concrete and Cement Products,2023(4):54-58.

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摘要

参数

结论

参考文献

引用本文

Abstract: Using graphite and carbon fiber as conductive phase materials, the effects of graphite content (2%, 4%) and curing methods (standard curing, direct electric curing) on the compressive strength and microstructure of concrete were studied, and the relationship between the direct electric curing time and the internal temperature and resistivity of the specimen was analyzed. The results show that the mechanical properties and electrical conductivity of concrete can be improved by adding proper content of conductive phase materials. Direct electric curing can increase the internal temperature of concrete, thus promoting the hydration reaction process, improving the compressive strength of concrete, and has a greater improvement effect on the early compressive strength. With the increase of direct electric curing time, the resistivity of concrete increases continuously and the electrical conductivity decreases. Direct electric curing can effectively reduce the pore size of gel pores in concrete and improve the pore structure of concrete.

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