Effect of temperature on the behavior of self-compacting concretes and their durability

Mohamed Salhi , Alex Li (1) , Mohamed Ghrici (2) , Christophe Bliard (3)

1 URCA UFR SEN - URCA - UFR Sciences exactes et naturelles
2 UHBC - Université Hassiba Ben Bouali de Chlef
3 ICMR - Institut de Chimie Moléculaire de Reims - UMR 7312

The formulation of self-compacting concretes (SCC) and the study of their properties at the laboratory level were currently well mastered. The aim of this work is to characterize SCC under hot climatic conditions and their effects on the properties of fresh and hardened SCC. Particularly, the effect of the initial wet curing time on the mechanical behavior such as the compressive strength and the durability of the SCCs (acid and sulfate attack) as well as the microstructure of SCCs mixtures. In this study, we used two types of cement, Portland cement and slag cement, three water/binder (W/B) ratio (0.32, 0.38 and 0.44) and five curing modes. The obtained results shows that the compressive strength is strongly influenced by the curing methods, 7-days of curing in the water and then followed by a maturing in a hot climate was the optimal duration for the development of a better compressive strength, regardless of the type of binder and the W/B ratio.

Mots clés: XRD; microstructure; acid attack; self-compacting concrete; hot climate; initial curing time; compressive strength

Domaines: Matériaux; Autre; Matériaux; Construction hydraulique; Matériaux composites et construction

Mohamed Salhi, Alex Li, Mohamed Ghrici, Christophe Bliard. Effect of temperature on the behavior of self-compacting concretes and their durability. Advances in Concrete Construction, 2019, 7 (4), pp.277-288. ⟨10.12989/acc.2019.7.4.277⟩. ⟨hal-02270793⟩