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Standard Test Method for Weather Resistance of Slate (Includes all amendments And changes 7/16/2020).
Automaticky přeložený název:
Standardní zkušební metoda pro odolnosti konstrukce Břidlice
NORMA vydána dne 1.11.2015
Označení normy: ASTM C217/C217M-15a
Poznámka: NEPLATNÁ
Datum vydání normy: 1.11.2015
Kód zboží: NS-621284
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
dimension stone, durability, slate, stone, test, weather resistance,, ICS Number Code 91.100.15 (Mineral materials and products)
Significance and Use | ||||
4.1 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. |
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1. 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 shear/scratch tester 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 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 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. |
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2. Referenced Documents | ||||
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