Influence of limestone filler and of the size of the aggregates on DEF

This experimental study aims to determine the effect of limestone filler on concrete expansion due to delayed ettringite formation (DEF). Different mortars made with different sizes and percentages of limestone filler and Portland cement CEM I 52.5N are cured in water. The expansion of the specimens is measured. Results show that DEF is not inhibited by limestone filler. The kinetics and the amplitude of the swelling depend on the size of the limestone filler. The volume fraction of aggregates changes only the kinetics: the relation between swelling and water uptake depends only on the size of the aggregates.

Mots clés

Concrete Delayed ettringite formation Limestone filler Aggregate size Swelling Water uptake Carboaluminates

Domaines

Matériaux Génie civil

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1601.03036.pdf (825.35 Ko)

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https://hal.science/hal-01330226

Soumis le : vendredi 19 janvier 2024-11:17:58

Dernière modification le : mercredi 4 décembre 2024-03:40:00

Dates et versions

hal-01330226 , version 1 (19-01-2024)

Identifiants

HAL Id : hal-01330226 , version 1
DOI : 10.1016/j.cemconcomp.2016.05.007

Citer

Mohamad Al Shamaa, Stéphane Lavaud, Loïc Divet, Jean-Baptiste Colliat, Georges Nahas, et al.. Influence of limestone filler and of the size of the aggregates on DEF. Cement and Concrete Composites, 2016, 71, pp.175-180. ⟨10.1016/j.cemconcomp.2016.05.007⟩. ⟨hal-01330226⟩

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