INFLUENCE OF COMPOSITE EFFECT WITH FIBER AND FLY ASH ON MECHANICAL PROPERTIES OF CONCRETE AND CHLORIDE PERMEABILITY OF CONCRETE

摘要

Concrete is easy to crack and this will have direct impact on its performances such as anti-permeability, impermeability, resistance to chemical erosion, ability of resist reinforcing steel corrosion, which will seriously affect its service life. It can effectively improve the crack resistance on concrete by mixing proper fiber. On the premise of improved crack resistance of concrete by with fiber and fly ash composite, a further research on influence of with fiber and fly ash respectively and their effect interaction on mechanical properties of concrete and chloride permeability of concrete in which the optimum amount of fly ash to be added has been found. Much work has also been done on the influence of composite with fiber and fly ash on improve anti-freezing and thawing performance and resistance to chemical corrosion of high performance concrete in this paper.