摘要
通过在纯水泥混凝土和粉煤灰、矿粉混凝土中掺入渗透结晶材料制备不同混凝土,同时制备基准混凝土,测试不同混凝土的抗氯离子渗透性能和抗硫酸盐侵蚀性能,用以研究渗透结晶材料对混凝土的抗蚀增强效果。同时,从孔结构分析和物相分析两方面揭示其抗蚀增强机理。试验结果表明:渗透结晶材料的应用显著提高了混凝土的抗氯离子渗透性能和抗硫酸盐侵蚀性能。当混凝土中掺有粉煤灰、矿粉等掺合料时,渗透结晶材料的改善效果更好。对其进行微观分析发现,渗透结晶材料的掺入提高了混凝土结构的致密性,降低总孔隙率,有害的毛细孔含量减小,并且减少了混凝土中可参与硫酸盐侵蚀反应的物质,表现出良好的抗蚀增强性能。
Permeable crystallization material was incorporated in concretes with and without fly ash and slag. Ordinary concrete without permeable crystallization material was also prepared for comparison. In order to investigate the influence of concrete anticorrosion enhancement,the penetration resistance of chloride ions and anti-sulfate corrosion performance were tested. The mechanism of the anticorrosion was the improvement of pore structure and hydration material composition. The results show that concrete anticorrosion enhancement is significantly improved by permeable crystallization material. For concretes with fly ash and slag,the improvement effect is much more obvious. Based on the microstructure analysis,the permeable crystallization materials can enhance the compaction degree,reduce the porosity and harmful pores,and reduce the substance to participate in sulfate erosion reaction. The concrete with the permeable crystallization material has good anticorrosion enhancement.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2017年第S1期229-234,共6页
Bulletin of the Chinese Ceramic Society
基金
交通运输部应用基础研究项目(2013329765250)
关键词
渗透结晶材料
抗侵蚀
孔结构
物相分析
permeable crystallization material
anticorrosion
pore structure
phase analysis
