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Standard Test Method for Determining the Percentage of Fractured Particles in Coarse Aggregate
Automaticky přeložený název:
Standardní zkušební metoda pro stanovení procentního zlomené částic ve hrubého kameniva
NORMA vydána dne 1.12.2013
Označení normy: ASTM D5821-13
Poznámka: NEPLATNÁ
Datum vydání normy: 1.12.2013
Kód zboží: NS-32687
Počet stran: 6
Přibližná hmotnost: 18 g (0.04 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
aggregate, crushed aggregate, crushed gravel, crushed particles, fractured faces, fractured particles, ICS Number Code 91.100.30 (Concrete and concrete products)
Significance and Use | ||||||||||
4.1 Some specifications contain requirements relating to percentage of fractured particles in coarse aggregates. One purpose of such requirements is to maximize shear strength by increasing inter-particle friction in either bound or unbound aggregate mixtures. Another purpose is to provide stability for surface treatment aggregates and to provide increased friction and texture for aggregates used in pavement surface courses. This test method provides a standard procedure for determining the acceptability of coarse aggregate with respect to such requirements. 4.2 Specifications differ as to the number of fractured faces required on a fractured particle, and they also differ as to whether percentage by mass or percentage by particle count shall be used. If the specification does not specify, use the criterion of at least one fractured face and calculate percentage by mass. |
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1. Scope | ||||||||||
1.1 This test method covers the determination of the percentage, by mass or by count, of a coarse aggregate sample that consists of fractured particles meeting specified requirements. 1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are provided 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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