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Communication Dans Un Congrès Année : 2023

Study of Hydration Properties for Blast Furnace Slag-Blended Cement: Prediction of Slag Hydration Kinetics

Valérie L’hostis
Paul Buttin

Résumé

Blast furnace slag (BFS) is an industrial by-product that has been used to replace clinker in Ordinary Portland Cement (OPC) to reduce the CO2 footprint impact in the construction field. Moreover, the use of BFS leads to an enhancement in terms of mechanical and durability properties. A solid comprehension of hydration properties is essential to achieve a better understanding of durability properties. In this context, this study deals with the hydration processes (BFS)-blended cement in terms of kinetics. For that purpose, a simplified analytical model is proposed to get the evolution of the hydration degree in time. The input data required are the formulation parameters, i.e., water-to-cement ratio (W/C) and the fraction of slag used respectively. The model is validated with experimental measurements of the evolution of the hydration kinetics, based on the results of a ThermoGravimetric Analysis (TGA), which are performed on different cement pastes formulated with BFS-blended cement. Finally, the present study is supplemented by a comparison between the results obtained by the TGA method and those provided by open-source software (VCCTL).
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Dates et versions

hal-04193828 , version 1 (01-02-2024)

Identifiants

Citer

Mohamad Ali Ahmad, Harifidy Ranaivomanana, Stéphanie Bonnet, Valérie L’hostis, Paul Buttin. Study of Hydration Properties for Blast Furnace Slag-Blended Cement: Prediction of Slag Hydration Kinetics. SynerCrete 2023: International RILEM Conference on Synergising Expertise towards Sustainability and Robustness of Cement-based Materials and Concrete Structures, Jun 2023, Milos, Greece. pp.165-176, ⟨10.1007/978-3-031-33187-9_16⟩. ⟨hal-04193828⟩
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