GB/T 13891-2008 in English

《GB/T 13891-2008建筑饰面材料镜向光泽度测定方法》由TC249（全国建筑卫生陶瓷标准化技术委员会）归口，主管部门为中国建筑材料联合会。
本标准规定了采用20°、60°和85°几何条件测定建筑饰面材料镜向光泽度方法的术语和定义、仪器与量具、试样、试验、结果计算、重复性和试验报告等。
a) 各种建筑饰面材料测定镜向光泽度均采用60°几何条件;
b) 当采用60°测定材料的镜向光泽度大于70 光泽单位时,为提高其分辨程度,可采用20°几何条件;
c) 当采用60°测定材料的镜向光泽度小于10 光泽单位时,为提高其分辨程度,可采用85°几何条件。
本标准适用于测定大理石、花岗石、水磨石、陶瓷砖、塑料地板和纤维增强塑料板材等建筑饰面材料的镜向光泽度。其他建筑饰面材料的镜向光泽度可参照本标准进行测定。

Scope

This standard specifies the terms and definitions, instruments and measuring tools, samples, tests, result calculations, repeatability and test reports, etc. for the method of measuring the specular gloss of architectural finishing materials using geometric conditions of 20°, 60° and 85°. a) 60° geometric conditions are used to measure the specular gloss of various building finishing materials; b) When the specular gloss of the material measured by 60° is greater than 70 gloss units, in order to improve its resolution, 20° geometry can be used Conditions; c) When using 60° to measure the specular gloss of the material is less than 10 gloss units, in order to improve its resolution, the 85° geometric condition can be used. This standard is applicable to the determination of specular gloss of marble, granite, terrazzo, ceramic tiles, plastic flooring and fiber-reinforced plastic panels and other architectural finishing materials. The specular gloss of other architectural finishing materials can be measured with reference to this standard.