Experimental Study on Performance of the Bridge Deck Pavement of SF-PFSC

To improve the mechanical properties and durability of bridge deck pavement, four types of concrete are involved in this study, that is Plant concrete(PC), steel fibers reinforced concrete(SFC), steel fibers and polypropylene fibers reinforced concrete(SF-PFSC) and SF-PFSC with air-entraining agent (SF-PFSC+). The experimental researches on mechanical properties, impermeability and frost resistance of above four types concrete were done. The experimental results show that, comparing with other concrete with the same fibre volume ratio, SF-PFSC, in which the steel fabre was partial replaced with polypropylene fibers, presents better flexural strength, flexural toughness and good durability, impermeability and frost resistance. By adding air-entraining agent, SF-PFSC+ shows not only excellent mechanical properties but also better impermeability and frost resistance. therefore, the SF-PFSC and SF-PFSC+ are suitable in the bridge deck pavement and can prolong the service life of bridge deck.