title: Mechanical behavior of municipal solid waste incinerator bottom ash: Results from triaxial tests.
abstract: Bottom ash resulting from the incineration of various domestic wastes can be viewed as a typical granular material. It is mainly used in civil engineering as a substitute for traditional natural aggregates. The purpose of this paper is to characterize their mechanical behavior and evaluate their mechanical properties for engineering applications. First, results of triaxial tests confirm that bottom ash behaves like dense sand. Second, the deformation and strength characteristics of bottom ash, such as the secant modulus, Poisson ratio, characteristic angle, dilation angle, effective cohesion and effective friction angle, are determined. It is found that these mechanical parameters are in close agreement with those of road aggregates and are influenced by the effective confining pressure. Third, the evolution of the deformation modulus according to the axial strain and the variation of the deviator stress according to the mean effective pressure are analyzed. Finally, a set of points of the yielding state is determined from triaxial tests to represent the shape of the yielding surface of bottom ash.
authors.affiliation: University of Transport and Communications, Research and Application Center for Technology in Civil Engineering, Ha Noi, Viet Nam; Université Lille Nord, France; Ecole Nationale Supérieure des Mines de Douai, LGCgE-MPE-GCE, Douai, France. Electronic address: lipton_estc@yahoo.fr.
authors.forename: Ngoc Hung
authors.initials: NH
authors.lastname: Le
authors.affiliation: Université Lille Nord, France; Ecole Nationale Supérieure des Mines de Douai, LGCgE-MPE-GCE, Douai, France. Electronic address: nor-edine.abriak@mines-douai.fr.
authors.forename: Nor Edine
authors.initials: NE
authors.lastname: Abriak
authors.affiliation: Research Institute in Civil Engineering and Mechanics, UMR CNRS 6183, Ecole Centrale de Nantes, 1 Rue de la Noe, 44321 Nantes, France. Electronic address: christophe.binetruy@ec-nantes.fr.
authors.forename: Christophe
authors.initials: C
authors.lastname: Binetruy
authors.affiliation: Université Lille Nord, France; Ecole Nationale Supérieure des Mines de Douai, LGCgE-MPE-GCE, Douai, France. Electronic address: mahfoud.benzerzour@mines-douai.fr.
authors.forename: Mahfoud
authors.initials: M
authors.lastname: Benzerzour
authors.affiliation: Duy Tan University, Institute of Research and Development, 03 Quang Trung, Danang, Viet Nam. Electronic address: stuan.nguyen@gmail.com.
authors.forename: Sy-Tuan
authors.initials: ST
authors.lastname: Nguyen
mesh_terms: D060729:Coal Ash; D017745:Incineration; D012822:Silicon Dioxide; D062611:Solid Waste
chemical_list: D060729:Coal Ash; D062611:Solid Waste; D012822:Silicon Dioxide
keywords: Bottom ash; Civil engineering; Granular material; Mechanical behavior; Triaxial test; Yield surface