Standard Test Method for Determination of Relative Density and Absorption of Fine, Coarse and Blended Aggregate Using Combined Vacuum Saturation and Rapid Submersion

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. Relative density (specific gravity) saturated surface dry (SSD) is used if the aggregate is at SSD, that is, if its absorption has been satisfied. Conversely, the relative density (specific gravity) oven-dry (OD) is used for computations when the aggregate is dry or assumed to be dry.
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 and C 128. This test method may result in values for these properties that are close to or divergent from values from other test methods.
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 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that co...
SCOPE
1.1 This test method 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.

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ASTM D7370-09 - 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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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D7370 − 09
StandardTest Method for
Determination of Relative Density and Absorption of Fine,
Coarse and Blended Aggregate Using Combined Vacuum
1
Saturation and Rapid Submersion
This standard is issued under the fixed designation D7370; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D75 Practice for Sampling Aggregates
D4753 Guide for Evaluating, Selecting, and Specifying Bal-
1.1 This test method covers the determination of relative
ances and Standard Masses for Use in Soil, Rock, and
density and absorption of fine aggregates by Method A and
Construction Materials Testing
coarse and blended aggregates by Method B.
D3666 Specification for Minimum Requirements for Agen-
1.2 The values are stated in SI units and are regarded as the
cies Testing and Inspecting Road and Paving Materials
standard units.
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
1.3 A multi-laboratory precision and bias statement for
coarse and combined aggregate tests in this standard has not
3. Summary of Test Method
beendevelopedatthistime.Therefore,thisstandardshouldnot
3.1 Sufficient aggregate sample is dried to constant mass.
be used for acceptance or rejection of coarse and combined
For each test two representative dry aggregate samples of the
aggregate materials for purchasing purposes.
same material are selected for testing. One sample is evacuated
1.4 This standard does not purport to address all of the
in a vacuum chamber inside a plastic bag and opened under
safety concerns, if any, associated with its use. It is the
water for rapid saturation of the aggregate. The dry mass and
responsibility of the user of this standard to establish appro-
submerged mass of the sample is used for calculation of
priate safety and health practices and determine the applica-
apparent relative density. The second sample of the same
bility of regulatory limitations prior to use.
aggregate is tested in a known volume metal pycnometer. The
2. Referenced Documents known mass of the pycnometer with water, mass of the dry
2 aggregate and mass of the aggregate and pycnometer filled
2.1 ASTM Standards:
with water is used for calculation of unsaturated density. The
C29/C29M Test Method for Bulk Density (“Unit Weight”)
results from the two samples tested are then used to calculate
and Voids in Aggregate
absorption, and relative density (OD).
C127 Test Method for Density, Relative Density (Specific
Gravity), and Absorption of Coarse Aggregate 3.2 This test can be completed in less than 30 minutes and
C128 Test Method for Density, Relative Density (Specific can be used for rapid determination of aggregate properties in
Gravity), and Absorption of Fine Aggregate construction testing laboratories.
C136 Test Method for Sieve Analysis of Fine and Coarse
3.3 This test can be performed on fine, coarse and blended
Aggregates
(combined) aggregates by using appropriate plastic bag and
C670 Practice for Preparing Precision and Bias Statements
pycnometer sizes.
for Test Methods for Construction Materials
4. Significance and Use
C702 PracticeforReducingSamplesofAggregatetoTesting
Size
4.1 Relative density (specific gravity) is the characteristic
generally used for calculation of the volume occupied by the
1
This test method is under the jurisdiction of ASTM Committee D04 on Road
aggregate in various mixtures containing aggregate, including
and Paving Materials and is the direct responsibility of Subcommittee D04.51 on
Portland cement concrete, bituminous concrete, and other
Aggregate Tests.
mixtures that are proportioned or analyzed on an absolute
CurrenteditionapprovedJune1,2009.PublishedJuly2009.Originallyapproved
volume basis. Relative density (specific gravity) is also used in
in 2008. Last previous edition approved in 2008 as D7370 – 08. DOI: 10.1520/
D7370-09.
the computation of voids in aggregate in Test Method C29/
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
C29M. Relative density (specific gravity) saturated surface dry
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
(SSD) is used if the aggregate is at SSD, that is, if its
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. absorption has been satisfied. Conversely, the relative density
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7370 − 09
(specific gravity) oven-dry (OD) is used for computations 5.5 Vacuum Measu
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D7370–08 Designation:D7370–09
Standard Test Method for
Determination of Relative Density and Absorption of Fine,
Coarse and Blended Aggregate Using Combined Vacuum
1
Saturation and Rapid Submersion
This standard is issued under the fixed designation D 7370; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This standardtest method 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C 29/C 29M Test Method for Bulk Density (Unit Weight) and Voids in Aggregate
C 127 Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate
C 128 Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate
C 136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
C 670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
C 702 Practice for Reducing Samples of Aggregate to Testing Size
D75 Practice for Sampling Aggregates
D 4753 Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction
Materials Testing
D 3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Summary of Test Method
3.1 Sufficient aggregate sample is dried to constant mass. For each test two representative dry aggregate samples of the same
material are selected for testing. One sample is evacuated in a vacuum chamber inside a plastic bag and opened under water for
rapid saturation of the aggregate. The dry mass and submerged mass of the sample is used for calculation of apparent relative
density. The second sample of the same aggregate is tested in a known volume metal pycnometer. The known mass of the
pycnometer with water, mass of the dry aggregate and mass of the aggregate and pycnometer filled with water is used for
calculation of unsaturated density. The results from the two samples tested are then used to calculate absorption, and relative
density (OD).
3.2 This test can be completed in less than 30 minutes and can be used for rapid determination of aggregate properties in
construction testing laboratories.
3.3 This test can be performed on fine, coarse and blended (combined) aggregates by using appropriate plastic bag and
pycnometer sizes.
1
This test method is under the jurisdiction ofASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.51 onAggregate
Tests.
Current edition approved July 15, 2008. Published August 2008.
Current edition approved June 1, 2009. Published July 2009. Originally approved in 2008. Last previous edition approved in 2008 as D 7370 – 08.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D7370–09
4. Significance and Use
4.1 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. R
...

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