摘要
以水泥基渗透结晶型涂层和有机硅涂层为研究对象,研究了混凝土水灰比、混凝土基材湿润状况和涂层涂刷遍数对渗透型涂层混凝土抗碳化性能的影响规律.结果表明:渗透型涂层能够对混凝土的抗碳化能力起到一定程度的改善作用,且水泥基涂层混凝土的抗碳化效果一般要优于有机硅涂层混凝土;潮湿的混凝土基材对水泥基涂层的抗碳化效果最为有利,而对有机硅涂层的影响较小;随着混凝土水灰比的减小,渗透型涂层对混凝土抗碳化能力的改善程度降低;增加涂层的涂刷遍数对有机硅涂层混凝土的抗碳化能力改善更为有效,对水泥基涂层混凝土则不甚明显.
In this paper, by taking a cement-based infiltration crystallization coating and a silane-based coating as research objects, the influences of water-to-cement ratio, concrete substrate＇ s moisture condition and painting times on the carbonation resistance of the concrete with infiltration coatings were investigated. The results show that （ 1 ） infiltration coatings help to improve the carbonation resistance of concrete to a certain degree, and the carbonation resistance of cement-based coatings is usually stronger than that of silane-based coatings; （2） moist concrete substrate is most favorable to the carbonation resistance of cement-based coatings, but it has little effect on that of silane-based coatings; （ 3 ） with the decrease of water-to-cement ratio, the improvement of carbonation resistance of the concrete with infiltration coatings degrades; and （4） more painting times benefits the carbonation resistance of concrete with silane-based coatings but has no obvious effect on that with cement-based coatings.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第6期102-106,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金面上项目(51178455)
江苏省环境灾变与结构可靠性重点实验室开放基金资助项目(JSKL2012YB01)
关键词
混凝土
抗碳化性能
有机硅涂层
水泥基涂层
concrete
carbonation resistance
silane-based coating
cement-based coating
