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Experiment-based modelling of the mechanical behaviour of nonhazardous waste incineration bottom ashes treated by hydraulic binder

Abstract Instrumented indentation tests have been carried out on an isolated 25 mm diameter particle of Non-Hazardous Waste Incineration bottom ash. These tests have enabled one to assess the intrinsic mean reduced modulus of elasticity “Er” of the particles. This result is used as input data for a 3D numerical model of Representative Elementary Volumes (REV) of a road gravel made with this kind of by-products. This numerical model is based on a multi-scale hierarchical modelling strategy. The aggregates treated with cement have been decomposed into two REV at the sub-mesoscopic and mesoscopic scales. The numerical simulations campaign (“virtual laboratory”) lead to the following results. At the sub-mesoscopic scale, we determined the input parameters for the Concrete Damaged Plasticity Model (CDPM) used at the mesoscopic scale. At the mesoscopic scale, the mechanical characteristics of the road aggregates usually determined through experiments have been found. The non-hazardous waste incineration bottom ashes treated by hydraulic binder was classified into mechanical classe 3.

Auteur(s) : Libasse Sow, Fabrice Bernard, Siham Kamali-Bernard, Cheikh Mouhamed Fadel Kébé
Pages : 01038
Année de publication : 2018
Revue : MATEC Web of Conferences
N° de volume : 149
Type : Article
Mise en ligne par : SOW Libasse