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ASTM International - ASTM C217-94(2004)

Standard Test Method for Weather Resistance of Slate

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Organization: ASTM International
Publication Date: 1 October 2004
Status: inactive
Page Count: 3
ICS Code (Mineral materials and products): 91.100.15
significance And Use:

This test method is useful in indicating the differences in weather resistance between various slates. This test method also provides one element in the comparison of slates.

scope:

1.1 This test method covers two procedures for weather resistance of slate in all outdoor installations by determining the depth of softening by an abraser or by hand scraping.

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.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Document History

ASTM C217-94(2004)
October 1, 2004
Standard Test Method for Weather Resistance of Slate
1.1 This test method covers two procedures for weather resistance of slate in all outdoor installations by determining the depth of softening by an abraser or by hand scraping. Note 1—The test is...
April 10, 1999
Standard Test Method for Weather Resistance of Slate
1.1 This test method covers two procedures for weather resistance of slate in all outdoor installations by determining the depth of softening by an abraser or by hand scraping. Note 1-The test is...
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