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Article Dans Une Revue Construction and Building Materials Année : 2022

Effect of fine and coarse recycled aggregates on high-temperature behaviour and residual properties of concrete

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This paper presents the results of an experimental study on the effect of recycled aggregates on concrete subjectedto high temperatures. Concretes with natural aggregates (0S-0G), 30 % substitution of recycled concretecoarse aggregates and sand (30S-30G), and 100 % substitution of recycled gravel (0S-100G) were studied. Theinfluence of recycled aggregates on the evolution of the thermophysical properties of concrete as a function oftemperature when heated to 600 ◦C and then cooled, as well as on the temperature distribution within a cylindricalspecimen was investigated. Thermal deformation measurements from 20 ◦C to 800 ◦C showed thefavourable influence of the substitution of siliceous sand by recycled sand. For all concretes, residualscompressive strength and elastic modulus decrease and porosity increases with the temperature.
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hal-03870085 , version 1 (22-07-2024)

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N. Algourdin, Prosper Pliya, A.L. Beaucour, A. Noumowé, D. Di Coste. Effect of fine and coarse recycled aggregates on high-temperature behaviour and residual properties of concrete. Construction and Building Materials, 2022, 341, pp.127847. ⟨10.1016/j.conbuildmat.2022.127847⟩. ⟨hal-03870085⟩
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