渗透结晶型外表面涂层对混凝土耐久性的防护作用

The protecting effect of capillary crystalline coat on extenal surface for concrete durability

外表面涂层是防护混凝土耐久性劣化的有效方法之一，可以防止水分子和有害介质的侵入。水泥基渗透结晶型材料具有良好的抗老化和抗侵蚀能力，在1．0kg／m^2的涂层厚度下，可能使混凝土的抗碳化性和抗氯离子渗透性大幅提高。

The coat on extenal surface is one of the useful methods for protecting concrete against corrosion.It can protecting water molecules and harmful media from invading.Cementitious capillary crystalline waterproofing materials have the ability of anti-degradaing and anti-corrosion,On the condition of 1.0kg/m^2 for the thickness of coat, it may effectly enhance the ability of anti-carbonization and Cl^- ＇s anti-penetration for concrete.