ASTM C1260 − 14 Standard Test Method for Potential Alkali Reactivity of Aggregates Mortar-Bar Method

ASTM C1260 − 14 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.

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 Standard Test Method for Potential Alkali Reactivity of Aggregates Mortar-Bar Method

Significance and Use
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.