Alkali Aggregate Reaction

Definition: chemical reaction in either mortar or concrete between alkalies (sodium and potassium) from portland cement or other sources and certain constituents of some aggregates.- ACI Concrete Terminology

Alkali-aggregate reactions can be either alkali-carbonate reactions (ACRs) or alkali-silica reactions (ASRs). In ACR, the reaction is between the alkalies (sodium and potassium) and certain carbonate rocks, particularly calcitic dolomite and dolomitic limestones, present in some aggregates. In ASR, the reaction is between alkalies and certain siliceous rocks or minerals, such as opaline chert, strained quartz, and acidic volcanic glass, present in some aggregates.

Practice oriented papers and articles ON ALKALI AGGREGATE REACTION

ASR-Related Distress in Floor Coatings

Publication: Concrete International
Date: 11/1/2019

Compressive Strength and Durability of Concrete Made with Combined Cementitious Materials

Publication: Special Publication
Date: 9/26/2018

Resistance of Hybrid Cement after 5 Years of Exposure to 5% Na2SO4

Publication: Special Publication
Date: 9/26/2018

Deterioration Survey of Structural Concrete at the Rogun Hydro after its Conservation

Publication: Special Publication
Date: 8/10/2018

Durability of Recycled Aggregate Concrete: A Review

Publication: Special Publication
Date: 3/1/2017

Alkali Silica Reaction in Mortar at Room Temperature

Publication: Special Publication
Date: 10/1/2016

Suppressing Alkali-Silica Expansion

Publication: Concrete International
Date: 5/1/2016

Managing ASR and DEF in Concrete Bridge Columns

Publication: Special Publication
Date: 10/27/2015

Sustainability And High-Performance Of Concrete – A Review

Publication: Special Publication
Date: 9/1/2015

Aggregate Reactivity and the Efficiency of Supplementary Cementing Materials

Publication: Special Publication
Date: 6/1/2015

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