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Standard Test Method for Measuring the Time Dependent Modulus of Sealants Using Stress Relaxation
Automaticky přeložený název:
Standardní zkušební metoda pro měření časově závislou modul tmely použití relaxace napětí
NORMA vydána dne 15.8.2011
Označení normy: ASTM C1735-11
Poznámka: NEPLATNÁ
Datum vydání normy: 15.8.2011
Kód zboží: NS-12337
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
elastomeric joint sealant, environmental attack, Hockman cycle, modulus, Mullins effect, stress relaxation, ICS Number Code 91.100.50 (Binders. Sealing materials)
Significance and Use | ||||||||||||
The intent of this test method is to determine the time dependence of modulus in building joint sealants using two loading-unloading cycles to identify and mitigate any Mullins effect, and followed by a stress relaxation procedure to determine the time dependent modulus. This test method has found applications in screening the performance of building joint sealants since the modulus is one indicator of the ability of elastomeric building sealant to withstand environmental induced movements. |
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1. Scope | ||||||||||||
1.1 This test method covers a procedure for measuring the time dependence of modulus in elastomeric joint sealants in a test specimen configuration described in Test Method C719. These sealant materials are typified by highly filled rubber materials. Any Mullins effect is first assessed and mitigated in two loading-unloading cycles. Time dependence of modulus in materials is then determined using a stress relaxation procedure. 1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 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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