摘要
以经改性的复合超细粉煤灰(简称CUFA),等量取代水泥,获得CUFA高性能道路混凝土,并通过试验研究了混凝土的力学性能及部分长期性能.结果表明,随着20%～40%CUFA的掺入,混凝土强度接近或达到C50强度级别,并建立起相应的强度回归经验式;同时干缩、抗渗、耐磨、抗裂等诸性能均优于基准混凝土.
According to the data analysis in a series of experimental studies,the paper proved that the composite ultra-fine fly ash （CUFA） which replaced equivalent cement and added into ordinary highway concrete, may produce high performance highway concrete. Mechanical properties and long-term properties of the CUFA were analyzed the correspondent strength equations of regression set up. The experinaental results indicate that the concrete strength is close or up to C50 grade with the addition of 20% - 40% CUFA, and other performances such as drying shrinkage,impermeability, wearing and cracking, etc, are also better than the reference concrete.
出处
《公路交通科技》
CAS
CSCD
北大核心
2005年第8期15-19,共5页
Journal of Highway and Transportation Research and Development
基金
国家科技部九五重点攻关资助项目
关键词
复合超细粉煤灰
高性能道路混凝土
力学性能
长期性能
Composite ultra-fine fly ash
High performance highway concrete
Mechanical properties
Long-term properties
