| 2. | Chloride ion permeability coefficient of c20 concrete and c30 concrete reduces after concrete surface is treated by reinforcing agent , and soakage reduced too . so the impermeability and carbonization resistance of concrete , especial c20 concrete , increase 涂刷耐久性增强剂后, c20和c30混凝土的氯离子扩散系数降低,吸水量减小,抗渗和抗碳化性能提高,其中,对c20混凝土的效果更为明显。 |