The carbonation performances and gas permeability of four types of concrete(ordinary concrete,fly ash concrete,air-entrained concrete and fly ash airentrained concrete) were studied in this paper.

• 研究了普通混凝土、粉煤灰混凝土、引气混凝土和粉煤灰引气混凝土等四类混凝土的抗碳化性能和气体渗透性能。