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.

Keywords

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

Domains

Materials Civil Engineering

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1601.03036.pdf (825.35 Ko)

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https://hal.science/hal-01330226

Submitted on : Friday, January 19, 2024-11:17:58 AM

Last modification on : Wednesday, June 5, 2024-3:23:23 AM

Dates and versions

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

Identifiers

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

Cite

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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