意义和目的

5.1 建筑物和构筑物上的涂鸦是一个持续存在且日益严重的问题. Many applications have been produced that are designed to resist graffiti marks or provide coatings on surfaces from which such marks can be easily removed. The procedure described in this practice provides a set of standard conditions that can be used to assess the graffiti resistance of a surface.

5.2 Graffiti resistance measured in accordance with this procedure is applicable to smooth surfaces. The same coating applied to rough or textured surfaces may be less resistant to graffiti.

5.3 Coating resistance to graffiti determined after natural or laboratory accelerated weathering, either before or after marking and conducted in accordance with this code, is considered to have greater weight than resistance to graffiti determined on the same coating without weathering. Coating resistance to graffiti determined after natural weathering should be considered more important than resistance to graffiti determined after accelerated laboratory aging.

ASTM D6578-2018 耐涂鸦性测定的标准实施规程

范围

1.1 This protocol covers the basic methods for assessing the graffiti resistance of coatings and the use of this protocol to assess the graffiti resistance of coatings after outdoor or laboratory accelerated exposure (before or after graffiti). Graffiti resistance is based on how a defined set of cleaners removes a defined set of marks.

1.2 This specification also defines procedures (选修的) for assessing graffiti removal after re-marking and subsequent re-cleaning. It does not involve recoating after the coating is no longer graffiti resistant.

1.3 以 SI 单位或英寸-磅单位表示的值应视为标准, 分别. 每个系统中指定的值可能不完全相同; 所以, 每个系统应独立使用. 结合两个系统的值可能会导致不符合标准.

1.4 本标准并非旨在解决所有安全问题, 如果有的话, 与其使用相关. 本标准的使用者有责任建立适当的安全机制, 健康和环境实践，并在使用前确定监管限制的适用性.

1.5 本国际标准是根据《关于制定国际标准的原则的决定》中确立的国际公认的标准化原则制定的, 技术性贸易壁垒发布的指南和建议 (技术性贸易壁垒) 世界贸易组织委员会.