What Does AAR Stand For?
AAR stands for Alkali Aggregate Reaction
AAR, or Alkali Aggregate Reaction, refers to a chemical reaction that occurs between alkali hydroxides in cement and reactive silica or alumino-silicate minerals in aggregates. This reaction can lead to the formation of expansive gel compounds, which may cause cracking and eventual structural damage in concrete over time. AAR is a significant concern in the field of civil engineering and materials science, as it affects the durability and longevity of concrete structures. Managing AAR involves careful selection of aggregates and the use of specific admixtures to mitigate its impacts.
Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym