摘要
为研究纤维增强高性能水泥基复合材料的抗氯离子侵蚀性能,对碳酸钙晶须、耐碱玻璃纤维及粉煤灰单一和复合增强高性能水泥基材料分别进行电通量试验,分析不同纤维尺度、掺量及粉煤灰掺合料对氯离子在水泥基材料中的渗透性能影响。结果表明,适量掺入碳酸钙晶须、耐碱玻璃纤维以及粉煤灰均有利于水泥基材料抗氯离子抗渗性能提高,且多纤维和掺合料复合增强时效果最优。纤维增强水泥基材料的抗氯离子渗透性能与其强度呈明显的正相关关系,氯离子侵蚀深度和抗压强度之间大致可采用下降的幂函数关系进行描述。
In order to study the resistance to chloride ion erosion of fiber-reinforced high-performance cement-based composites,the electrical flux tests of high performance cement-based materials reinforced with micron-sized calcium carbonate whisker and centimetre-sized alkali resistant glass fiber were carried out respectively,and the effects of different fiber sizes,dosage and fly ash admixture on the permeability of chloride ions in cement-based materials were analyzed.The results show that proper addition of calcium carbonate whiskers,alkali-resistant glass fibers,and fly ash are all conducive to the improvement of the chloride ion impermeability of cement-based materials,and the effect is best when the composite fibers and admixtures are reinforced.The resistance of fiber-reinforced cement-based materials to chloride ion penetration has a significant positive correlation with its strength.The depth of chloride ion erosion and compressive strength can be roughly described by a decreasing power function relationship.
作者
刘荣浩
张勤
张正
荀勇
LIU Ronghao;ZHANG Qin;ZHANG Zheng;XUN Yong(Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,China;College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China;School of Civil Engineering,Yancheng Institute of Technology,Yancheng 224051,China)
出处
《混凝土》
CAS
北大核心
2021年第5期46-50,共5页
Concrete
基金
国家自然科学基金资助项目(51508154,51478408)。
关键词
纤维
增强
水泥基材料
氯离子渗透
电通量
fiber
reinforced
cement-based
permeability of chloride ions
electric flux
