1.1 这种做法包括在涂覆涂层之前对混凝土进行表面清洁，以去除油脂、污垢和松散材料。程序包括扫帚清洁、真空清洁、鼓风清洁、水清洁、洗涤剂水清洁和蒸汽清洁。 1.2 这种做法不是为了改变混凝土的表面轮廓，而是为了清洁表面。 1.3 以英寸磅为单位的数值应视为标准。本标准不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 表面清洁用于制备混凝土表面，以便涂覆用于轻型服务的涂层。 4.2 当保护系统将用于连续或间歇浸泡、机械负载或需要最佳粘结才能达到满意性能的保护系统时，不打算单独使用本规程（见规程 天4259 和 D4260 ).

1.1 This practice includes surface cleaning of concrete to remove grease, dirt, and loose material prior to the application of coatings. Procedures include broom cleaning, vacuum cleaning, air blast cleaning, water cleaning, detergent water cleaning, and steam cleaning. 1.2 This practice is not intended to alter the surface profile of the concrete but to clean the surface. 1.3 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Surface cleaning is used to prepare concrete surfaces for applying coatings intended for light-duty service. 4.2 Use of this practice alone is not intended where protective systems will be used for continuous or intermittent immersion, mechanical loading, or for protective systems needing optimum bond for satisfactory performance (see Practices D4259 and D4260 ).