ASTM C217-1994(1999)

标准号：ASTM C217-1994(1999)
英文标准名称：Standard Test Method for Weather Resistance of Slate
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
国际标准分类号：91.100.15 (Mineral materials and products)
适用范围： Note 1-The test is based on the fact that slates containing pyrite, calcite, and carbon undergo a chemical weathering which results in the conversion of the calcite particles to gypsum. The swelling action that results causes disintegration of the slate. The extent of this action on various slates in the test has been found to correlate with the durability of the materials in actual weathering.