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  • ASTM
    D2940/D2940M-09 Standard Specification for Graded Aggregate Material For Bases or Subbases for Highways or Airports
    Edition: 2009
    $82.37
    Unlimited Users per year

Description of ASTM-D2940 2009

ASTM D2940 / D2940M - 09

Standard Specification for Graded Aggregate Material For Bases or Subbases for Highways or Airports

Active Standard ASTM D2940 / D2940M | Developed by Subcommittee: D04.50

Book of Standards Volume: 04.03




ASTM D2940 / D2940M

Abstract

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. Coarse aggregate retained on the sieve shall consist of durable particles of crushed stone, gravel, or slag capable of withstanding the effects of handling, spreading, and compacting without degradation productive of deleterious fines. Fine aggregate passing through the sieve shall normally consist of fines from the operation of crushing the coarse aggregate. Where available and suitable, addition of natural sand or finer mineral matter, or both, is not prohibited. The following tests shall be performed: grain-size test (dry and wet sieving), liquid limit test, plastic limit test, plasticity index test, sand equivalent value test, and expansion test.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

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 1The 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.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates

D75 Practice for Sampling Aggregates

D422 Test Method for Particle-Size Analysis of Soils

D2419 Test Method for Sand Equivalent Value of Soils and Fine Aggregate

D4318 Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils

D4792 Test Method for Potential Expansion of Aggregates from Hydration Reactions

E105 Practice for Probability Sampling of Materials

E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process


Keywords

aggregate; base course; subbase; coarse aggregate; fine aggregate; Aggregate--specifications; Airport pavement--specifications; Graded aggregate material; Highway construction--specifications; Pavement surfaces--specifications;


ICS Code

ICS Number Code 93.080.10 (Road construction); 93.120 (Construction of airports); 93.080.20 (Road construction materials)


DOI: 10.1520/D2940_D2940M-09

ASTM International is a member of CrossRef.

ASTM D2940 / D2940M

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