ASTM C687测定松填建筑绝热材料热阻的标准规范
日期:2012-02-13 19:01
ctice, the representative thickness for the C 687 tests shall be determined at the midpoint of the blown density range. Once this is accomplished, all thermal testing on this product is conducted at a thickness that is greater or equal to the representative thickness.
For this practice, the minimum test thickness shall be 100 mm (4 in.) or the representative thickness, whichever is larger. If the test is to represent an installation at a lesser thickness, the installed thickness shall be used.
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