ASTM C1260-14
Standard Test Method for Potential Alkali Reactivity of Aggregates 40;Mortar-Bar Method41;
- Standard No.
- ASTM C1260-14
- Release Date
- 2014
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM C1260-21
- Latest
- ASTM C1260-23
- Scope
4.1 This test method provides a means of detecting the potential of an aggregate intended for use in concrete for undergoing alkali-silica reaction resulting in potentially deleterious internal expansion. It is based on the NBRI Accelerated Test Method (1-4).3 It is especially useful for aggregates that react slowly or produce expansion late in the reaction. However, it does not evaluate combinations of aggregates with cementitious materials nor are the test conditions representative of those encountered by concrete in service.
4.2 Because the specimens are exposed to a NaOH solution, the alkali content of the cement is not a significant factor in affecting expansions.
4.3 When excessive expansions (see Appendix X1) are observed, it is recommended that supplementary information be developed to confirm that the expansion is actually due to alkali-silica reaction. Sources of such supplementary information include: (1) petrographic examination of the aggregate (Guide C295/C295M) to determine if known reactive constituents are present; (2) examination of the specimens after tests (Practice C856) to identify the products of alkali reaction; and (3) where available, field service records can be used in the assessment of performance.
4.4 When it has been concluded from the results of tests performed using this test method and supplementary information that a given aggregate should be considered potentially deleteriously reactive, the use of mitigative measures such as low-alkali portland cement, mineral admixtures, or ground granulated blast-furnace slag should be evaluated (see last sentence of 4.1).
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. No other units of measurement are included in this standard. When this test method refers to combined-unit standards, the selection of the measurement systems is at the user’s discretion.
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.
ASTM C1260-14 Referenced Document
- ASTM C109/C109M Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
- ASTM C125 Standard Terminology Relating to Concrete and Concrete Aggregates
- ASTM C127 Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate
- ASTM C128 Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate
- ASTM C150/C150M Standard Specification for Portland Cement
- ASTM C151/C151M Standard Test Method for Autoclave Expansion of Hydraulic Cement
- ASTM C295/C295M Standard Guide for Petrographic Examination of Aggregates for Concrete
- ASTM C305 Standard Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
- ASTM C490/C490M Standard Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete
- ASTM C511 Standard Specification for Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes
- ASTM C670 Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
- ASTM C856 Standard Practice for Petrographic Examination of Hardened Concrete
- ASTM D1193 Standard Specification for Reagent Water
- ASTM E11 Standard Specification for Wire Cloth and Sieves for Testing Purposes
ASTM C1260-14 history
- 2023 ASTM C1260-23 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
- 2022 ASTM C1260-22 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
- 2021 ASTM C1260-21 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
- 2014 ASTM C1260-14 Standard Test Method for Potential Alkali Reactivity of Aggregates 40;Mortar-Bar Method41;
- 2007 ASTM C1260-07 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
- 2005 ASTM C1260-05a Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
- 2005 ASTM C1260-05 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
- 2001 ASTM C1260-01 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
- 1994 ASTM C1260-94 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
