Alkali aggregate reactions (AAR and ASR)
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Portland cement consists mainly of anhydrous calcium silicates, which react with water. Concretes made from Portland cement are naturally alkaline with a pH of >12.5. Sodium and potassium are also present to varying degrees. Many, if not most, of the aggregates used in concrete contain silica. The chemical reaction that takes place...Explore the subscription options here to get full access to isurv, including downloads.
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