ASTM C1260-01
(Test Method)Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
SCOPE
1.1 This test method permits detection within 16 days of the potential for deleterious alkali-silica reaction of aggregate in mortar bars.
1.2 The values stated in SI units are to be regarded as standard. The values in inch-pound units are shown in parentheses, and are for informational purposes only.
1.3 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. A specific precautionary statement is given in the section on Reagents.
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Designation:C1260–01
Standard Test Method for
Potential Alkali Reactivity of Aggregates (Mortar-Bar
1
Method)
This standard is issued under the fixed designation C1260; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope * C670 Practice for Preparing Precision and Bias Statements
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for Test Methods for Construction Materials
1.1 Thistestmethodpermitsdetectionwithin16daysofthe
C856 Practice for Petrographic Examination of Hardened
potential for deleterious alkali-silica reaction of aggregate in
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Concrete
mortar bars.
C1293 Test Method for Concrete Aggregates by Determi-
1.2 The values stated in SI units are to be regarded as
nation of Length Change of Concrete Due toAlkali-Silica
standard. The values in inch-pound units are shown in paren-
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Reaction
theses, and are for informational purposes only.
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D1193 Specification for Reagent Water
1.3 This standard does not purport to address all of the
E11 Specification for Wire-Cloth and Sieves for Testing
safety concerns, if any, associated with its use. It is the
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Purposes
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3. Significance and Use
bility of regulatory limitations prior to use. Aspecific precau-
3.1 This test method provides a means of detecting the
tionary statement is given in the section on Reagents.
potential of an aggregate intended for use in concrete for
2. Referenced Documents undergoingalkali-silicareactionresultinginpotentiallydelete-
rious internal expansion. It is based on the NBRI Accelerated
2.1 ASTM Standards:
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Test Method (1-4). It is especially useful for aggregates that
C109/C109M Test Method for Compressive Strength of
react slowly or produce expansion late in the reaction. How-
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
2
ever, it does not evaluate combinations of aggregates with
Specimens)
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cementitious materials nor are the test conditions representa-
C150 Specification for Portland Cement
tive of those encountered by concrete in service.
C151 Test Method for Autoclave Expansion of Portland
2 3.2 BecausethespecimensareexposedtoaNaOHsolution,
Cement
the alkali content of the cement is not a significant factor in
C 227 Test Method for Potential Alkali Reactivity of
3 affecting expansions.
Cement-Aggregate Combinations (Mortar-Bar Method)
3.3 When excessive expansions (see Appendix X1) are
C295 Guide for Petrographic Examination of Aggregates
3 observed, it is recommended that supplementary information
for Concrete
be developed to confirm that the expansion is actually due to
C305 PracticeforMechanicalMixingofHydraulicCement
2 alkali-silica reaction. Sources of such supplementary informa-
Pastes and Mortars of Plastic Consistency
tion include: (1) petrographic examination of the aggregate
C490 Practice for Use of Apparatus for the Determination
(Guide C295) to determine if known reactive constituents are
of Length Change of Hardened Cement Paste, Mortar, and
3
present; (2) examination of the specimens after tests (Practice
Concrete
C856)toidentifytheproductsofalkalireaction;and(3)where
C511 Specification for Moist Cabinets, Moist Rooms, and
available,fieldservicerecordscanbeusedintheassessmentof
Water Storage Tanks Used in the Testing of Hydraulic
2,3
performance.
Cements and Concretes
3.4 When it has been concluded from the results of tests
performed using this test method and supplementary informa-
1
tion that a given aggregate should be considered potentially
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregatesand is the direct responsibility of Subcommittee
C09.26 on Chemical Reactions.
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Current edition approved Aug. 10, 2001. Published October 2001. Formerly Annual Book of ASTM Standards, Vol 11.01.
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published as Proposal P214. Last previous edition C1260–94. Annual Book of ASTM Standards, Vol 14.02.
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Annual Book of ASTM Standards, Vol 04.01. The boldface numbers in parentheses refer to a list of references at the end of
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Annual Book of ASTM Standards, Vol 04.02. the text.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C1260
deleteriously reactive, the use of mitigative measures such as ture. NaOH can cause very severe burns and injury to unpro-
low-alkali portland cement, mineral admixtures, or ground tected skin and eyes. Suitable personal protective equipment
granulated blast-furnace sla
...
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