ASTM C586 − 11 Standard Test Method for Potential Alkali Reactivity of Carbonate Rocks as Concrete Aggregates Rock-Cylinder Method

ASTM C586 − 11 Standard Test Method for Potential Alkali Reactivity of Carbonate Rocks as Concrete Aggregates Rock-Cylinder Method

Scope
1.1 This test method covers the determination of the expansion of a specimen of carbonate rock while immersed in a solution of sodium hydroxide (NaOH) at room temperature.

The length changes occurring during such immersion indicate the general level of reactivity of the rock and whether tests should be made to determine the effect of aggregate prepared from the rock upon the volume change in concrete.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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.

ASTM C586 − 11 Standard Test Method for Potential Alkali Reactivity of Carbonate Rocks as Concrete Aggregates Rock-Cylinder Method

Significance and Use

5.1 This test method is intended to give a relatively rapid indication of the potential expansive reactivity of certain carbonate rocks that may be used as concrete aggregates.

The test method has been successfully used in (1) research and (2) preliminary screening of aggregate sources to indicate the presence of material with a potential for deleterious expansion when used in concrete.