1.1 本规范涵盖了用作屋顶覆盖层的混凝土砖，其中需要耐久性和外观，以提供指定设计的耐候表面。 1.2 瓷砖由波特兰水泥、水和矿物骨料制成，包括或不包括其他材料。 1.3 瓷砖在制造过程中通过成型、压制或挤压成型。成型方法可用于描述瓷砖。 1.4 其他成分，如适用于混凝土的化学和矿物外加剂，应符合ASTM标准规范（如适用），或应通过试验或经验证明不损害混凝土的耐久性。 1.5 瓷砖通常是平面或波状矩形，具有各种横截面积剖面、形状、尺寸、表面纹理和颜色。 注1: 本规范涵盖的混凝土屋顶砖由轻质或正常重量骨料制成，或由两者制成。 注2: 当需要特殊特性时，如颜色、外观表面纹理或其他特殊特性，此类特性应由买方指定。然而应咨询当地销售商是否有具有所需特征的混凝土屋顶瓦。 1.6 本规范的正文引用了注释和脚注，这些注释和脚注提供了解释性材料。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 1.7 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.8 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。

1.1 This specification covers concrete tiles intended for the use as roof covering where durability and appearance are required to provide a weather-resistant surface of specified design. 1.2 Tiles are manufactured from portland cement, water, and mineral aggregates with or without the inclusion of other materials. 1.3 Tiles are shaped during manufacturing by molding, pressing, or extrusion. The shaping method can be used to describe the tile. 1.4 Other constituents, such as chemical and mineral admixtures established as suitable for use in concrete, shall conform to ASTM standard specifications where applicable, or shall be shown by tests or experience not to be detrimental to the durability of concrete. 1.5 Tiles are generally planar or undulating rectangular shapes available in a variety of cross-sectional areas profiles, shapes, sizes, surface textures, and colors. Note 1: Concrete roof tiles covered by this specification are made from lightweight or normal weight aggregates, or both. Note 2: When particular features are desired, such as color, surface texture for appearance, or other special features, such properties should be specified by the purchaser. However. the local sellers should be consulted as to the availability of concrete roof tile having a desired feature. 1.6 The text of this specification references notes and footnotes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.7 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.8 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.