ASTM D3274-09(2013)
用真菌(真菌类的或藻类的)生长或污物和污垢堆积来评定漆膜表面损坏程度的方法
Standard Test Method for Evaluating Degree of Surface Disfigurement of Paint Films by Fungal or Algal Growth, or Soil and Dirt Accumulation
- 标准号
- ASTM D3274-09(2013)
- 发布
- 2009年
- 发布单位
- 美国材料与试验协会
- 替代标准
- ASTM D3274-09(2017)
- 当前最新
- ASTM D3274-09(2021)
- 引用标准
- ASTM D1006 ASTM D3456 ASTM D4610 ASTM G7
- 适用范围
4.1 The growth of fungi in and on the surface of paint films represents a major cause of discoloration or disfigurement of painted surfaces. Because of their dark pigmentation, it is frequently difficult to distinguish fungi from dirt or soil particles.
4.2 Use of Pictorial Standards:
4.2.1 The pictorial references that are part of this test method are for illustration purposes and may be used for visual comparisons.
4.2.2 The diagrams represent an idealized schematic of various growth levels on paint films. they are intended as a representation only, but will serve as a useful guideline to establish amount and type of growth.
4.2.3 The diagrams represented in Fig. 1 are not derived from a linear scale. The scale is intended to provide for more discrimination at the earlier stages of fungal or algal growth. It is at these levels that greater discernment is necessary.
(a)
FIG. 1 Early Stages of Fungal Growth
(b)
FIG. 1 Early Stages of Fungal Growth (continued)
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