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ASTM C 217/C217M : 2020

ASTM C 217/C217M : 2020

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Weather Resistance of Slate

Available format(s)

Hardcopy , PDF

Superseded date

01-21-2022

Language(s)

English

Published date

07-16-2020

Publisher

American Society for Testing and Materials

This test method covers two procedures for weather resistance of slate in all outdoor installations by determining the depth of softening by a shear/scratch tester or by hand scraping after soaking in 1 % sulfuric acid.

1.1This test method covers two procedures for weather resistance of slate in all outdoor installations by determining the depth of softening by a shear/scratch tester or by hand scraping after soaking in 1 % sulfuric acid.

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.

1.2The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.3This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee
C 18
DocumentType
Test Method
Pages
6
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM C 629/C629M : 2015 Standard Specification for Slate Dimension Stone
ASTM C 406/C406M : 2015 Standard Specification for Roofing Slate

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Hardcopy - English
PDF - English
Hardcopy - English
PDF - English
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