该欧洲标准是涉及混凝土结构保护和修理的产品和系统的系列之一。它规定了一种确定修复产品和系统的吸水性的方法，如EN 1504-3中所定义。 该方法基于测量由固定时间间隔内的水的毛细管吸收引起的重量增加。吸收的水分的重量表示为系数，表明样品通过毛细作用吸收水而不施加外部压力的趋势

This European Standard is one of a series dealing with products and systems for the protection and repair of concrete structures. It specifies a method for determining the resistance to water absorption of repair products and systems, as defined in EN 1504-3. The method is based on measuring the increase in weight due to capillary absorption of water over a fixed time interval. The weight of water absorbed is expressed as a coefficient, indicating the tendency of the specimen to imbibe water by capillary action without external pressure applied.