Experimental Study On Complex Fiber Concrete

Because normal concrete bridge deck pavement has various forepart disease. This article considered mechanism and durability of bridge deck pavement mainly from material aspect, therefore has introduced the complex fiber concrete material. Complex fiber concrete not only has good mechanism but also has superior durability. And it is very suitable to take the bridge deck pavement material.In this experiment, it has used steel fiber, polypropylene fiber as well as polypropylene fiber imitates the steel wire, had considered the sole fiber concrete, the steel - polypropylene fiber complex fiber concrete as well as the steel - polypropylene fiber imitate the steel wire complex fiber concrete, has carried on the fiber concrete mixture ratio design, has carried on the experimental design from mechanics performance (cube compressive strength, flexural strength, flexural toughness) and durability (impervious).In the article, it has separately carried on experimental analysis on each performance of fiber concrete, has contrasted the different performance among the plain concrete, the sole fiber concrete as well as the complex fiber concrete, has manifested the superiority of complex fiber concrete, and has carried on the theoretical analysis from the fiber enhancement mechanism aspect, has drawn following experimental conclusion: The performance of fiber concrete must surpass the plain concrete obviously. The fiber promiscuous effect played a very good role, the performance of complex fiber concrete had to surpass the sole fiber concrete. In the complex fiber concrete the steel - polypropylene fiber imitates the steel wire the compound effect to have to surpass the steel - polypropylene fiber compound. The steel - polypropylene fiber imitated the steel wire complex fiber concrete to display the superior mechanics and durability, was an ideal choice of bridge deck pavement material, was the chosen material of next step refinement experiment.