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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: The Use of Pessimum Effect to Reduce
the Expansion of Concretes Based on
ASR Reactive Aggregates
Author(s): I. Moundoungou, D. Bulteel, E. Garcia-Diaz,
and P. Dégrugilliers
Publication: Special Publication
Appears on pages(s): 231-244
Keywords: alkali-silica reaction (ASR); concrete; expansion reduction; limestone; pessimum effect.
Abstract:Alkali-silica reaction (ASR) concrete expansion tests at 60°C (140°F) and
100 % relative humidity showed that siliceous limestone aggregates could have
pessimum behavior similar to that of flint aggregate. For a given content of alkalis, a concrete made with fine and coarse reactive aggregates expands less than concrete made with reactive fine aggregate and no reactive coarse aggregate. The higher the reactivity of the aggregate, the higher is the observed expansion reduction. This expansion reduction effect could be used to make concrete that would have a low level expansion.
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