本欧洲标准定义和规定了用于水泥基砖石砂浆的外加剂的要求和合格标准。 它包括两种类型的混合物，长期阻燃和加气/增塑，用于预拌混合和现场制造的砖石砂浆。 使用混凝土砂浆的规定不属于本欧洲标准，但符合EN 998-1和EN 998-2的要求

This European Standard defines and specifies the requirements and conformity criteria for admixtures for use in cement based masonry mortar. It covers two types of admixtures, long term retarding and air entraining/plasticising which are used in ready-mixed and site made masonry mortars. Provisions for the use of admixtures for masonry mortar are not part of this European Standard but are covered by EN 998-1 and EN 998-2.