Poraver® - Influence on the Alkali-Silica-Reaction

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Poraver® - Influence on the Alkali-Silica-Reaction

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Sebastian Tacke

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Stefan Kastner

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Influence of expanded glass granulate on the alkali-silica-reaction in cementitious systems

The alkali-silica-reaction (ASR, alkaline reaction or concrete cancer) is a chemical reaction between silicon dioxide in concrete aggregates and alkali hydroxide in the concrete pore solution. The resulting alkali silicate gel has an expanding effect and can lead to concrete damage.
There are no absolutely inert aggregates. All aggregates react with the hardened cement paste to a greater o