摘要
硬化混凝土气泡特征参数对混凝土抗冻性具有本质影响,利用Rapid Air 457测试系统得到纤维混凝土试件空气含量、比表面积和气泡间距系数等气泡特征参数,对比混凝土试件受冻前后参数差异,结合抗压和劈裂实验分析素混凝土和纤维混凝土气孔结构特征与宏观力学性能的内在联系,从微观角度探讨其抗冻破坏机理。
Air void parameter of hardened concrete has a essential effect on frost resistance of con- crete. Air void parameters of fiber concrete speciments like air content, specific surface , spacing factor and so on are obtained by RapidAir 457 testing system. Compared to the parameters differences of the concrete specimens before and after frozen, analyzing of internal relations air void structure paramete and macro mechanical properties of plain concrete and fiber reinforced concrete combined with the compres- sion test and split test, the frost resistance deterioration mechanism of hardened concrete is discussed from a micro perspective.
出处
《低温建筑技术》
2016年第9期1-2,10,共3页
Low Temperature Architecture Technology
基金
国家级大学生创新实验项目(150033)
教育部新世纪优秀人才支持计划项目(NCET-12-0107)
辽宁省高等学校优秀人才支持计划项目(LR2015024)
关键词
抗冻性
纤维混凝土
气泡特征参数
抗压
劈裂
frost resistance
fiber reinforced concrete
air void parameter
compression
split
