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ASTM D2940/D2940M-15
Standard Specification for Graded Aggregate Material For Bases or Subbases for Highways or Airports
Automaticky preložený názov:
Štandardné špecifikácie pre triedeného kameniva materiál pre báz alebo základné dosky pre diaľnice alebo na letiskách
NORMA vydaná dňa 1.6.2015
Informácie o norme:
Označenie normy: ASTM D2940/D2940M-15
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.6.2015
Kód tovaru: NS-610659
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Technika stavby silnic
Materiály pro stavbu silnic
Stavba letišť
Anotácia textu normy ASTM D2940/D2940M-15 :
Keywords:
aggregate, base course, subbase, coarse aggregate, fine aggregate,, ICS Number Code 93.080.10 (Road construction), 93.120 (Construction of airports), 93.080.20 (Road construction materials)
Doplňujúce informácie
| 1. Scope | ||||||||||||||||||
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1.1 This specification covers quality-controlled graded aggregates that, when hauled to and properly spread and compacted on a prepared grade to appropriate density standards, may be expected to provide adequate stability and load support for use as highway or airport bases or subbases. Note 1: The engineer is cautioned to provide appropriate
construction specifications to ensure compaction to an extent that
further densification from traffic loadings on the completed
pavement will be insignificant. The method suggested is to require
compaction on a firm foundation of a short control strip of the
material at a suitable moisture content, by means of vibratory or
other proven effective rollers or tampers, until no further
increase in density results. Compaction requirements should ensure
that an average density of certain appropriate percentages of the
control strip maximum density be achieved on the balance of the
job; for base courses, 98% is suggested as the minimum average
requirement.
1.2 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 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.4 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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