ASTM C1293-20,Standard Test Method for Determination of Length Change of Concrete Due to Alkali-Silica Reaction.
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ASTM C1293-20 covers the determination of the susceptibility of an aggregate or combination of an aggregate with pozzolan or slag for participation in expansive alkali-silica reaction by measurement of length change of concrete prisms.
ASTM C1293-20 is intended to evaluate the potential of an aggregate or combination of an aggregate with pozzolan or slag to expand deleteriously due to any form of alkali-silica reactivity (3, 4).
Terminal
Terminology used in this standard is as given in Terminology C125 or Descriptive Nomenclature C294.
Apparatus
5. 1 The molds, the associated items for molding test specimens, and the length comparator for measuring length change shall conform to the applicable requirements of Test Method C157/C157M and Practice C490/C490M,and the molds shall have nominal 75-mm square cross sections.
5.2 The storage container options required to maintain the prisms at a high relative humidity are described in 5.2.1