Experimental study on the carbonation of fly ash concrete

Based on fly ash concrete carbonation test, the impacts of water-binder ratio, fly ash proportion and pouring side to concrete carbonation depths was studied. With the help of the influence coefficient K_s of steel bar existence, the carbonation situations of concrete specimen with steel bar existence are analysed. The research results indicate that steel bar existence can inhibit concrete carbonation to a certain extent, the influence coefficient of steel bar existence and carbonation age conforms to logarithm relation.