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The ASTM C1260 standard, titled "Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)," provides guidelines and procedures for evaluating the potential alkali reactivity of aggregates used in concrete. This standard helps assess the likelihood of deleterious alkali-silica reactions (ASR) in concrete mixtures.
ASTM C1260 outlines the testing method using mortar bars made from the aggregate of interest, which are subjected to specific curing conditions. The bars are monitored for expansion over time, indicating the presence of alkali reactivity.
Products associated with ASTM C1260 include aggregate samples, which are used to prepare the mortar bars. Testing equipment such as molds for specimen preparation, curing chambers, and devices for measuring dimensional changes may be utilized.
By adhering to the ASTM C1260 standard and utilizing associated products, engineers, researchers, and testing laboratories can assess the potential alkali reactivity of aggregates. This information aids in selecting suitable aggregates for concrete mixtures, ensuring long-term durability and minimizing the risk of alkali-silica reactions.