Experiment-based modelling of the mechanical behaviour of non-hazardous waste incineration bottom ashes treated by hydraulic binder [Approche couplée modélisation-expérimentation pour étudier le comportement mécanique de Mâchefers d'Incinération de Déchets Non Dangereux traités avec un liant hydraulique]
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. © The Authors, published by EDP Sciences, 2018.
Keywords
Aggregates
Ash handling
Binders
Bins
Hazardous materials
Hazards
Incineration
Mechanical properties
Numerical models
Roads and streets
Stability
Superconducting materials
Waste treatment
3-D numerical modeling
Damaged plasticities
Instrumented indentation
Mechanical behaviour
Mechanical characteristics
Non hazardous wastes
Representative elementary volume
Virtual laboratories
Waste incineration