摘要
采用实验室加速试验方法,研究了水胶比、Si O2/(Al2O3+Ca O)(质量比)、附加防腐措施对混凝土耐酸性能的影响规律,通过水胶比设计、防腐涂料优选及微组分调控来提高混凝土抗酸性水腐蚀性能。结果表明:降低水胶比、适当提高Si O2/(Al2O3+Ca O),对于混凝土耐酸性能的改善有较为明显的效果;辅以适宜的防腐涂层(DPS永凝液、清水混凝土防腐涂料),可以有效阻滞、延缓侵蚀离子渗入,提高混凝土的抗酸性水腐蚀性能。
Adopting the acceleration test method in laboratory, the effect of water-binder ratio,SiO2/（Al2O3＋CaO） ratio （mass ratio）, additional anti-corrosion measures on the acid resistance of concrete was researched. An effective method for acid water resistance improvement was discussed by investigating the water-binder ratio design,anti-corrosive coatings optimization and microcomponents regulation. Results show that the smaller water-binder ratio and properly bigger SiO2/（A1203＋CaO） ratio could improve the acid resistance of concrete effectively. Using the additional anti-corrosion coating as deep penetrating sealer（DPS） or the protective coating for as-cast finish concrete,the infiltration of erosion ion would be delayed or even be blocked,which lead to an effectively improvement of the acid water resistance of concrete.
出处
《新型建筑材料》
2014年第11期21-25,共5页
New Building Materials
基金
国家自然科学基金项目(51372185)
