ASTM C1105 − 08a Standard Test Method for Length Change of Concrete Due to Alkali-Carbonate Rock Reaction

ASTM C1105 − 08a Standard Test Method for Length Change of Concrete Due to Alkali-Carbonate Rock Reaction

Scope
1.1 This test method covers the determination, by measurement of length change of concrete prisms, the susceptibility of cement-aggregate combinations to expansive alkali-carbonate reaction involving hydroxide ions associated with alkalies (sodium and potassium) and certain calcitic dolomites and dolomitic limestones.

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

When combined standards are cited, the selection of measurement system is at the user’s discretion subject to the requirements of the referenced standard.

ASTM C1105 − 08a Standard Test Method for Length Change of Concrete Due to Alkali-Carbonate Rock Reaction

Significance and Use
4.1 Two types of alkali reactivity of aggregates have been described in the literature: the alkali-silica reaction involving certain siliceous rocks, minerals, and artificial glasses (1),3 and the alkali-carbonate reaction involving dolomite in certain calcitic dolomites and dolomitic limestones (2).

This test method is not recommended as a means to detect combinations susceptible to expansion due to alkali-silica reaction since it was not evaluated for this use in the work reported by Buck (2).

This test method is not applicable to aggregates that do not contain or consist of carbonate rock (see Descriptive Nomenclature C294).