Alkali-aggregate reaction | Article about alkali-aggregate reaction by The Free Dictionary
Also found in: Acronyms
alkali-aggregate reaction[′al·kə‚lī ′ag·rə·gət rē′ak·shən]
The chemical reaction of an aggregate with the alkali in a cement, resulting in a weakening of the concrete.
A chemical reaction in mortar or concrete between alkalies from portland cement or other sources and certain constituents of some aggregates; under certain conditions, deleterious expansion of the concrete or mortar may result.
References in periodicals archive
On the aar susceptibility of granitic and quartzitic aggregates in view of petrographic characteristics and accelerated testing, in 14th International Conference on Alkali-Aggregate Reactions
in Concrete, 20- 25 May 2012, Austin, Texas, USA.
A major diagnostic symptom which confirms the occurrence of the alkali-aggregate reaction
is the presence of the reaction products (alkali silicate gel) in the concrete.
Diagnosis and Control of Alkali-Aggregate Reactions