1.1 本规程涵盖混凝土砌块的表面清洁，以在涂覆涂层之前清除灰尘、污垢、砂浆飞溅物、油和油脂。程序包括真空清洗、鼓风清洗、水清洗、洗涤剂水洗、蒸汽清洗和机械清洗。 1.2 这种做法可能会改变混凝土的表面轮廓，但主要是为了清洁表面。 1.3 本标准并不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。 有关具体的危险说明，请参阅第节 5. . 1.4 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砌块表面，以涂覆用于轻型服务的涂层、水和化学溶液的飞溅和溢出、辐射暴露、去污以及用碱性清洁剂反复冲洗。

1.1 This practice covers surface cleaning of concrete masonry units to remove dust, dirt, mortar spatter, oil, and grease prior to the application of coatings. Procedures include vacuum cleaning, air-blast cleaning, water cleaning, detergent water wash, steam cleaning, and mechanical cleaning. 1.2 This practice may alter the surface profile of the concrete but is primarily intended to clean the surface. 1.3 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. For specific hazard statements, see Section 5 . 1.4 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 to be used to prepare concrete unit masonry surfaces for applying coatings intended for light duty service, splash and spillage of water and chemical solutions, radiation exposure, decontamination, and repeated washdowns with alkaline cleaners.