ASTM D4792/D4792M-13(2019)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4792/D4792M − 13 (Reapproved 2019)
Standard Test Method for
Potential Expansion of Aggregates from Hydration
Reactions
This standard is issued under the fixed designation D4792/D4792M; 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 2. Referenced Documents
2.1 ASTM Standards:
1.1 This test method covers the determination of potential
C702/C702M Practice for Reducing Samples of Aggregate
volume expansion of dense graded compacted aggregates that
to Testing Size
contain components susceptible to hydration and consequent
D75/D75M Practice for Sampling Aggregates
volume increase, such as the free calcium and magnesium
D698 Test Methods for Laboratory Compaction Character-
oxides that occur in some industrial by-products.
istics of Soil Using Standard Effort (12,400 ft-lbf/ft (600
1.2 The values stated in either SI units or inch-pound units 3
kN-m/m ))
are to be regarded separately as standard. The values stated in
D1883 Test Method for California Bearing Ratio (CBR) of
each system may not be exact equivalents; therefore, each
Laboratory-Compacted Soils
system shall be used independently of the other. Combining
D2940/D2940M Specification for Graded Aggregate Mate-
values from the two systems may result in non-conformance
rial For Bases or Subbases for Highways or Airports
with the standard.
D3666 Specification for Minimum Requirements for Agen-
cies Testing and Inspecting Road and Paving Materials
NOTE 1—Sieve size is identified by its standard designation in Speci-
fication E11. The alternative designation given in parentheses is for E11 Specification for Woven Wire Test Sieve Cloth and Test
information only and does not represent a different standard sieve size.
Sieves
1.3 The text of this standard references notes and footnotes
3. Summary of Test Method
which provide explanatory material. These notes and footnotes
3.1 This test method consists of measuring the volume
(excluding those in tables and figures) shall not be considered
expansion of compacted specimens following the general
as requirements of the standard.
procedures of Test Method D1883. Compaction is based on
1.4 This standard does not purport to address all of the
maximum density determination using Test Methods D698.To
safety concerns, if any, associated with its use. It is the
acceleratethehydrationreaction,specimensarestoredinwater
responsibility of the user of this standard to establish appro-
at 70 6 3 °C [158 6 5 °F] for a minimum of seven days.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4. Significance and Use
1.5 This international standard was developed in accor-
4.1 This test method provides a procedure for determining
dance with internationally recognized principles on standard-
the compliance of steel slags and other materials with
ization established in the Decision on Principles for the
specifications,suchasSpecificationD2940/D2940M,thatlimit
Development of International Standards, Guides and Recom-
permissible expansion of base and subbase aggregates contain-
mendations issued by the World Trade Organization Technical
ing components subject to hydration.
Barriers to Trade (TBT) Committee.
4.2 This test method can also be used to evaluate the
effectiveness of aging or other treatments for reducing the
expansive potential of such materials.
This test method is under the jurisdiction of ASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.51 on
Aggregate Tests. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Feb. 15, 2019. Published February 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1988. Last previous edition approved in 2013 as D4792/D4792M – 13. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D4792_D4792M-13R19. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D4792/D4792M − 13 (2019)
4.3 Test results have not been correlated with field 8.2 Use Method B or C depending upon the gradation of the
performance, and values obtained do not necessarily indicate sample, with oversize corrections as recommended in 7.2.1.
expansion that may occur in service conditions.
9. Expansion Test
NOTE 2—The quality of the results produced by this standard are
9.1 Prepare three expansion test specimens from the sample
dependent on the competence of the personnel performing the procedure
set aside for this purpose, following the procedure in Test
and the capability, calibration, and maintenance of the equipment used.
Agencies that meet the criteria of Specification D3666 are generally
Method D1883 for specimens to be soaked.
considered capable of competent and objective testing, sampling,
9.2 Afterplacingtheadjustablestemandperforatedplateon
inspection, etc. Users of this standard are cautioned that compliance with
the compacted specimens in the molds, add weights to produce
Specification D3666 alone does not completely ensure reliable results.
Reliable results depend on many factors; following the suggestions of
a surcharge of 4.54 kg [10 lb], and submerge the molds and
Specification D3666 or some similar acceptable guideline provides a
weights in water at 70 6 3 °C [158 6 5 °F].Allow free access
means of evaluating and controlling some of those factors.
of water to the top and bottom of the specimens, and maintain
5. Apparatus the temperature at 70 6 3 °C [158 6 5 °F] for the testing
period.
5.1 Molds, Spacer Disks, Expansion Measuring Apparatus,
Stainless Steel Weights, and Dial Gages conforming to the
NOTE 3—The molds should be well coated with a rust preventative,
requirements of Test Method D1883. suchas10Wmotoroil,whethertheyareconstructedofcorrosion-resistant
metal or not.
5.2 Mixing Bowl, Straightedge
...