混凝土表层防护涂料研究进展

doi:10.16085/j.issn.1000-6613.2020-2131

摘要/Abstract

摘要：

混凝土作为多孔结构的工程材料，在温度效应及外应力作用下，外界水分及有害物质可渗入到其毛细孔隙内部加速混凝土腐蚀，其耐久性受到影响。发展高性能混凝土防护涂料对于延长混凝土服役时间具有重要的作用。本文系统介绍了表面成膜型涂料、有机硅渗透型涂料、孔隙封闭型涂料对混凝土表层防护的研究现状、存在的问题以及发展方向。

关键词: 混凝土, 表层防护, 防护涂料

Abstract:

The concrete as a material of the porous engineering structures is easy to speed up the corrosion with outside water and harmful materials in temperature and external stress, and thus affecting the durability. Therefore, the high performance protective coatings of concrete have an important role in extending the service time. In this paper, the research status, existing problems and development direction of surface film-forming coating, silicone penetrating coating and pore closing coating on concrete surface protection were systematically introduced.

Key words: concrete, surface protection, protective coating

中图分类号:

TQ630.7

刘竞, 苗同梦, 姜子清, 徐永杰, 钟子龙, 郁培云. 混凝土表层防护涂料研究进展[J]. 化工进展, 2021, 40(10): 5615-5623.

LIU Jing, MIAO Tongmeng, JIANG Ziqing, XU Yongjie, ZHONG Zilong, YU Peiyun. Research progress of surface protection coatings for concrete[J]. Chemical Industry and Engineering Progress, 2021, 40(10): 5615-5623.

图/表 9

图1 聚脲涂层缺陷

图2 GO/PU和fGO/PU涂层抗腐蚀性能

图3 有机硅与表层混凝土间的反应

图4 有机硅涂料防水效果图

图5 渗透固结型防护涂料在砂浆固结体表面作用机理

图6 渗透固结防护涂料在砂浆固结体表层及渗透层的扫描电子显微镜（SEM）图

图7 渗透固结涂料在砂浆固结体表层渗透深度

图8 酮类化合物/胺类化合物/环氧树脂反应

图9 渗透结晶涂料在混凝土内部孔隙针状结晶图

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