AASHTO T 364-17 PDF Download

The AASHTO T 364-17 standard is a method of testing the reactivity of fine and coarse aggregates to alkali-silica reaction (ASR). This chemical test determines the composite activation energy of the aggregates, which is a measure of their propensity to react with an alkaline solution that simulates the pore solution chemistry of a typical portland cement concrete. The test aims to identify aggregates that could potentially cause ASR, a chemical reaction that can lead to expansive cracking and deterioration of concrete structures. By measuring the activation energy, this method provides a quantitative assessment of the aggregate's reactivity, allowing engineers and researchers to evaluate its suitability for use in concrete mixtures.