抗酸性水腐蚀混凝土优化设计及微组分调控  

The optimal design and micro-components regulation for acid water corrosion resistance of concrete

作　　者：蔡老虎[1,2] 李北星[2] 何宏荣[1] 王宁宁[2] 王威[2] 

机构地区：[1]江苏省交通科学研究院股份有限公司,江苏南京211112 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070

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)

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.

关 键 词：混凝土 水胶比 SiO2/(Al2O3+CaO) 耐酸性能 微组分调控 

分 类 号：TU528.01[建筑科学—建筑技术科学]