Design Example of Mix Ratio of Highway Air-entrained Concrete in Heilongjiang Province
The use of air-entrained concrete can reduce the water-cement ratio,enhance the frost durability of concrete,reduce the expansion failure caused by alkali aggregate reaction,and improve the workability and impermeability of concrete.Especially in areas with salt erosion such as deicing salt,it can also improve the resistance of concrete structures to salt erosion.According to the construc-tion practice of the Bei'an to Heihe Expressway,the technical indicators of concrete raw materials and their influence on air content were analyzed,and the parameters and design parameters of air-entrained concrete and mix ratio were selected,and the matching ratio design was carried out.Through experimental verification,it is confirmed that the prepared air-entrained concrete has good working performance,mechanical properties,and frost resistance durability.
highwayair-entrained concreteraw materialsmix ratio design
万方数据
维普
