1.1 本规程涵盖了通过一系列日益磨损的清洁方法评估矿物建筑基材上防涂鸦产品性能的基本方法。将防涂鸦材料应用于一系列混凝土、砌体和天然石材样本进行评估。防涂鸦是基于如何通过一套指定的清洁技术去除一组定义的标记。 1.2 本规程还定义了一个程序，用于在重新标记和随后的重新清洁后评估涂鸦去除情况。它不涉及材料不再耐涂鸦后基材的重新处理。 1.3 以国际单位制表示的数值应视为标准值。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）。本标准的用户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（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 建筑和结构上的涂鸦是全国各个地区的一个重大问题。已经开发了多种涂层，可以抵抗涂料/标记的应用，也可以帮助去除它们。本标准实施规程描述了评估应用于各种混凝土、砌体和天然石材基材的防涂鸦涂层有效性的程序。它不涉及去除金属或任何其他非矿物基质上的涂鸦。 5.2 本规程仅针对实验室环境中未暴露于自然或人工风化的基底上的涂鸦去除。 规格 D6578 描述了一种在自然和人工风化后去除涂鸦的方法。

1.1 This practice covers a basic method for evaluating the performance of anti-graffiti products on mineral building substrates by a series of increasingly abrasive cleaning methods. The anti-graffiti materials are applied to a series of concrete, masonry and natural stone specimens for evaluation. Graffiti resistance is based on how a defined set of markings are removed by a designated set of cleaning techniques. 1.2 This practice also defines a procedure to evaluate graffiti removal after re-marking with subsequent re-cleaning. It does not address the re-treatment of substrates after a material is no longer graffiti resistant. 1.3 The values stated in SI 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 ====== 5.1 Graffiti on buildings and structures is a significant problem in various regions across the country. A variety of coatings have been developed to be either resistant to the application of paints/marker or to aid in their removal. This standard practice describes a procedure for evaluating the effectiveness of anti-graffiti coatings applied to various concrete, masonry and natural stone substrates. It does not address graffiti removal on metal or any other non-mineral substrate. 5.2 This practice only addresses graffiti removal on substrates in a laboratory environment, that have not been exposed to either natural or artificial weathering. Specification D6578 describes a method for graffiti removal after both natural and artificial weathering.