ASTM-D7370 › Standard Test Method for Determination of Relative Density and Absorption of Fine, Coarse and Blended Aggregate Using Combined Vacuum Saturation and Rapid Submersion
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Scope
1.1 This standard covers the determination of relative density and absorption of fine aggregates by Method A and coarse and blended aggregates by Method B.
1.2 The values are stated in SI units and are regarded as the standard units.
1.3 A multi-laboratory precision and bias statement for coarse and combined aggregate tests in this standard has not been developed at this time. Therefore, this standard should not be used for acceptance or rejection of coarse and combined aggregate materials for purchasing purposes.
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.
Significance and Use
Relative density (specific gravity) is the characteristic generally used for calculation of the volume occupied by the aggregate in various mixtures containing aggregate, including Portland cement concrete, bituminous concrete, and other mixtures that are proportioned or analyzed on an absolute volume basis. Relative density (specific gravity) is also used in the computation of voids in aggregate in Test Method C 29/C 29M
Apparent density and apparent relative density (apparent specific gravity) pertain to the solid material making up the constituent particles not including the pore space within the particles which is accessible to water.
Absorption values are used to calculate the change in the mass of an aggregate due to water absorbed in the pore spaces within the constituent particles, when it is deemed that the aggregate has been in contact with water long enough to satisfy the absorption potential. The laboratory standard for absorption is that obtained after submerging dry aggregate for a prescribed period of time.
Note 1—There are other test methods that have been used and continue to be used to determine these aggregate properties: C 127
Note 2—The quality of the results produced by this standard are dependant upon the competence of the personnel performing the procedure and the capability, calibration, and the maintenance of the equipment used. Agencies that meet the criteria of Practice D 3666
Keywords
absorption; aggregate; apparent density; apparent relative density; blended aggregate; coarse aggregate; combined aggregate; density; fine aggregate; relative density; specific gravity; ICS Number Code 91.100.15 (Mineral materials and products)
To find similar documents by ASTM Volume:
04.03 (Road and Paving Materials; Vehicle-Pavement Systems)
To find similar documents by classification:
91.100.15 (Mineral materials and products Including earth, sands, clay, slates, stones, etc.)
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Document Number
ASTM-D7370_D7370M-14R21
Revision Level
2014 R21 EDITION
Status
Current
Modification Type
New
Publication Date
May 11, 2021
Document Type
Test Method
Page Count
8 pages
Committee Number
D04.51