AASHTO T 303-00 (2017) PDF Download

AASHTO T 303-00 (2017) is a standard method of testing that aims to accelerate the detection of potentially harmful expansion in mortar bars caused by alkali-silica reaction. This test method enables the identification of such expansion within a shorter timeframe of just 16 days. The alkali-silica reaction refers to a chemical reaction between alkali hydroxides present in cement and reactive silica compounds in aggregates, which can lead to the formation of a gel-like substance that expands upon exposure to moisture.

By using this standard, engineers and researchers can evaluate the potential for deleterious expansion of mortar bars in a relatively short period of time. This is particularly useful in situations where the alkali-silica reaction is a concern, as it allows for early detection and mitigation of potential damage. The accelerated nature of this test method provides a more efficient and timely assessment of the potential risks associated with alkali-silica reaction, helping to inform decision-making in construction projects.