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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

New Test Method for Alkali-Silica Reaction (ASR) and the Role of Additional Calcium Ions in the Reaction Process

Publication: Special Publication
Date: 7/1/2022

Mix-Design of a Long-Term Durable Concrete for the Reinforced Foundations in the Bridge on the Straits of Messina, Italy

Publication: Special Publication
Date: 7/1/2022

Combined Use of Calcium Nitrate and Fly Ash to Build ASR-Free Concrete Industrial Floors

Publication: Special Publication
Date: 7/1/2022

Effect of Aggregate Types on Mortar Properties Produced with Geopolymer Binders

Publication: Special Publication
Date: 4/22/2021

Interactions Between SCM`S and Different Aggregates for Preventing ASR

Publication: Special Publication
Date: 4/22/2021

The Use of Ground Glass as a Pozzolan

Publication: Special Publication
Date: 4/22/2021

ASR-Related Distress in Floor Coatings

Publication: Concrete International
Date: 11/1/2019

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

Publication: Special Publication
Date: 9/26/2018

Compressive Strength and Durability of Concrete Made with Combined Cementitious Materials

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

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