改性纳米SiO2有机成膜涂层对混凝土抗氯离子渗透性能的影响

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改性纳米SiO2有机成膜涂层对混凝土抗氯离子渗透性能的影响

The Influence of Modified Nano-SiO2 Organic Film-forming Composite Coating on Chloride Ion Penetration Resistance of Concrete

２０19年第7期

混凝土；改性纳米SiO2；有机成膜涂层；抗氯离子渗透性能

Concrete; Modified nano-SiO2; Organic film coating; Resistance to chloride ion penetration

２０19年第7期

10.19761/j.1000-4637.2019.07.009.04

国家自然科学基金项目（51779096）。

韩建军，王俊伟，吕亚军

1.河南工业大学土木建筑学院，郑州 450001；2.华北水利水电大学建筑学院，郑州 450046

韩建军1，王俊伟1，吕亚军2

韩建军,王俊伟,吕亚军.改性纳米SiO2有机成膜涂层对混凝土抗氯离子渗透性能的影响[J].混凝土与水泥制品,2019(7):9-12.

HAN J J,WANG J W,LYU Y J.The Influence of Modified Nano-SiO2 Organic Film-forming Composite Coating on Chloride Ion Penetration Resistance of Concrete[J].China Concrete and Cement Products,2019(7):9-12.

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摘要：为了研究改性纳米SiO2有机成膜涂层对混凝土抗氯离子渗透性能的影响。选择氯化橡胶（CR）、丙烯酸（AA）、醇酸磁漆（AR）三种有机成膜涂料，制备出了6种改性和未改性纳米SiO2有机成膜复合涂层混凝土，并采用电通量方法对涂层混凝土进行抗氯离子渗透能力测试。试验结果表明：在不同涂层材料中掺入未改性纳米SiO2的掺量为1%、2%以及改性纳米SiO2的掺量为2%、3%时，成膜复合涂层混凝土的抗氯离子渗透性能最好，且改性比未改性纳米SiO2的改善效果要好。接触角测试结果表明：涂层混凝土的抗氯离子渗透能力与涂层的疏水能力之间存在正相关关系，即表面涂层的疏水性能越强，涂层混凝土的抗氯离子渗透性能越好。 Abstract: In order to study the effect of modified nano-SiO2 organic film composite coating on the chloride ion penetration resistance of concrete, three kinds of organic film-forming coatings were selected to prepare six modified and unmodified nano-SiO2 organic film-forming composite coating concretes, and the conductivity of the coated concrete was tested by the electric flux method. The results show that the improvement effect of the coating concrete with different coating type and W/C is different. The lower the W/C of concrete, the better the chloride ion penetration resistance of the coated concrete. The effect of nano-SiO2 particles on different coatings is different. Different types of film-forming coatings have different optimum nano-SiO2 content, and the modified SiO2 has better improvement effect than unmodified SiO2. The contact angle test shows that there is a positive correlation between the chloride ion penetration resistance of the coated concrete and the hydrophobic ability of the coating.

英文名 : The Influence of Modified Nano-SiO2 Organic Film-forming Composite Coating on Chloride Ion Penetration Resistance of Concrete

刊期 : ２０19年第7期

关键词 : 混凝土；改性纳米SiO2；有机成膜涂层；抗氯离子渗透性能

Key words : Concrete; Modified nano-SiO2; Organic film coating; Resistance to chloride ion penetration

刊期 : ２０19年第7期

DOI : 10.19761/j.1000-4637.2019.07.009.04

文章编号 :

基金项目 : 国家自然科学基金项目（51779096）。

作者 : 韩建军，王俊伟，吕亚军

单位 : 1.河南工业大学土木建筑学院，郑州 450001；2.华北水利水电大学建筑学院，郑州 450046

韩建军1，王俊伟1，吕亚军2

韩建军,王俊伟,吕亚军.改性纳米SiO2有机成膜涂层对混凝土抗氯离子渗透性能的影响[J].混凝土与水泥制品,2019(7):9-12.

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摘要

参数

结论

参考文献

引用本文

摘要：为了研究改性纳米SiO2有机成膜涂层对混凝土抗氯离子渗透性能的影响。选择氯化橡胶（CR）、丙烯酸（AA）、醇酸磁漆（AR）三种有机成膜涂料，制备出了6种改性和未改性纳米SiO₂有机成膜复合涂层混凝土，并采用电通量方法对涂层混凝土进行抗氯离子渗透能力测试。试验结果表明：在不同涂层材料中掺入未改性纳米SiO₂的掺量为1%、2%以及改性纳米SiO₂的掺量为2%、3%时，成膜复合涂层混凝土的抗氯离子渗透性能最好，且改性比未改性纳米SiO₂的改善效果要好。接触角测试结果表明：涂层混凝土的抗氯离子渗透能力与涂层的疏水能力之间存在正相关关系，即表面涂层的疏水性能越强，涂层混凝土的抗氯离子渗透性能越好。
Abstract: In order to study the effect of modified nano-SiO₂ organic film composite coating on the chloride ion penetration resistance of concrete, three kinds of organic film-forming coatings were selected to prepare six modified and unmodified nano-SiO₂ organic film-forming composite coating concretes, and the conductivity of the coated concrete was tested by the electric flux method. The results show that the improvement effect of the coating concrete with different coating type and W/C is different. The lower the W/C of concrete, the better the chloride ion penetration resistance of the coated concrete. The effect of nano-SiO₂ particles on different coatings is different. Different types of film-forming coatings have different optimum nano-SiO₂ content, and the modified SiO₂ has better improvement effect than unmodified SiO₂. The contact angle test shows that there is a positive correlation between the chloride ion penetration resistance of the coated concrete and the hydrophobic ability of the coating.

关键词:

混凝土；改性纳米SiO2；有机成膜涂层；抗氯离子渗透性能

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改性纳米SiO2有机成膜涂层对混凝土抗氯离子渗透性能的影响

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