ASTM C609-07(2014)
瓷砖块间光反射值和少量色差的测量用标准试验方法

Standard Test Method for Measurement of Light Reflectance Value and Small Color Differences Between Pieces of Ceramic Tile

被代替

ASTM C609-07(2014) 发布历史

ASTM C609-07(2014)由美国材料与试验协会 US-ASTM 发布于 2007。

ASTM C609-07(2014) 在中国标准分类中归属于: Q31 建筑卫生陶瓷,Q33 建筑玻璃。

ASTM C609-07(2014) 发布之时，引用了标准

• ASTM C242 陶瓷洁具及相关产品的标准术语
• ASTM D2244 用于计算彩色公差和色差与仪器测量颜色坐标的标准实践
• ASTM E259 建筑用反射绝缘、辐射屏障和乙烯基拉伸天花板材料的样品制备和安装以评估表面燃烧特性的标准实施规程
• ASTM E284 专业认证性能测试的标准实践

ASTM C609-07(2014)的历代版本如下：

• 2020年 ASTM C609-20 用于测量陶瓷片之间的光反射率值和小色差的标准测试方法
• 2019年 ASTM C609-07(2019) 用于测量陶瓷片之间的光反射率值和小色差的标准测试方法
• 2007年 ASTM C609-07(2014) 瓷砖块间光反射值和少量色差的测量用标准试验方法
• 2007年 ASTM C609-07 瓷砖块间光反射值和少量色差的测量用标准试验方法
• 1990年 ASTM C609-90(2000) 陶瓷墙或地砖之间微小色差测量的标准试验方法
• 2000年 ASTM C609-90(1995) 陶瓷墙或地砖之间微小色差测量的标准试验方法

 

5.1 This test method describes the means of determining the LRV of a tile specimen. Certain building codes require the use of materials rated by LRV. Application of this test method provides the means for rating ceramic tile. LRVs reported for ceramic tile should include reference to the observer and illuminant for which the rating is valid.

5.2 LRV is a property dependent on the overall color of a tile specimen. Control of LRV is achieved through control of color and adherence to color specifications will govern the acceptability of a product with respect to LRV. Therefore, a product cannot be judged as having an unacceptable LRV unless the color of the product is found to be unacceptable.

5.3 Mixtures of several tile products are commonly installed on a surface, requiring a means to calculate LRV for a product mix. The rating obtained for an individual tile product can be used to calculate the LRV for a product mix using the following equation: where:

n   =   number of products included in the mix p1 to n   =   the proportion of the surface area taken up by each product, the sum of p1 to pn must equal one LRV1 to n   =   the LRV for each product used For example, a mixture of two products is used on a surface. Two thirds of the surface area is covered by product A with a LRV of 758201;%, and one third of the surface is covered by product B with an LRV of 608201;% (see Fig. 2). Using the equation, the product mix is found to have an LRV of 708201;%. FIG. 2 Example of a Product Mix Used on a Surface

5.4 The test method described herein provides instrumental means as the basis for judging color difference. Magnitude of color difference between pairs of ceramic tile can be determined and expressed in numerical terms.

5.5 Based on interlaboratory investigation,3 color difference ΔE of plain-colored tile, if determined according to this test method, should give excellent reproducibility with a standard deviation of not more than σ8201;=8201;±0.15 units. LRV should also give excellent reproducibility when used for solid colored tile based on the relationship between LRV and either the Y tristimulus or L value. However, LRV reproducibility for multicolored, speckled, or textured surface tile will be dependent upon the degree of variation of the tile specimen, and will require a different measurement procedure to minimize the impact of the variation.

5.6 The test method requires the use of multiple illuminants for the determinati......

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标准号

ASTM C609-07(2014)

发布

2007年

发布单位

美国材料与试验协会

替代标准

ASTM C609-07(2019)

当前最新

ASTM C609-20

 

 

引用标准

ASTM C242 ASTM D2244 ASTM E259 ASTM E284

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