摘要
采用压汞法和吸水动力学法,试验研究混凝土孔隙率、最可几孔径等孔结构体系参数随掺加粉煤灰的等级、掺量及粉煤灰混凝土龄期的变化规律,研究表明:混凝土孔隙率随粉煤灰的细度和掺量的增加而减小;随龄期的增长孔隙率、最可几孔径优化速度大于28d基准混凝土.为配制高强度高性能混凝土提供理论依据.
Mercury intrusion method and absorbing water kinetics are used to measure sub-micro pore structure parameters of fly ash concrete, including total porosity, most probable aperture and so on. And the impact of concrete pore structure from fly ash grade, content and age is analyzed. It concludes that porosity of concrete decrease with increase of fineness and content of fly ash, and further more, speed of optimization about total porosity and most probable aperture will be more than normal concrete with the growing age. This offers a theoretical basis for preparing high strength and high per-formance concrete.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2009年第2期288-291,共4页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
湖南省科技厅资助项目(2008GK3023)
