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Title: Aggregate material formulated with MSWI bottom ash and APC fly ash for use as secondary building material
Author: Valle Zermeño, Ricardo del
Formosa Mitjans, Joan
Chimenos Ribera, Josep Ma.
Martínez López, Mònica
Fernández Renna, Ana Inés
Keywords: Materials de construcció
Propietats mecàniques
Protecció ambiental
Matèria condensada
Construction materials
Mechanical properties
Environmental protection
Condensed matter
Issue Date: Mar-2013
Publisher: Elsevier Ltd
Abstract: The main goal of this paper is to obtain a granular material formulated with Municipal Solid Waste Incinerarion (MSWI) bottom ash (BA) and air pollution control (APC) ash to be used as secondary building material. Previously, an optimum concrete mixture using both MSWI residues as aggregates was formulated. A compromise between the environmental behaviour and the economy of the process was considered. Unconfined compressive strength and abrasion resistance values were measured in order to evaluate the mechanical properties. From these results, the granular mixture was not suited for certain applications owing to the high BA/APC content and low cement percentages used to reduce the costs of the final product. Nevertheless, the leaching test performed showed that the concentrations of all heavy metals were below the limits established by the current Catalan legislation for their reutilization. Therefore, the material studied might be mainly used in embankments, where high mechanical properties are not needed and environmental safety is assured.
Note: Versió postprint del document publicat a:
It is part of: Waste Management, 2013, vol. 33, num. 3, p. 621-627
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ISSN: 0956-053X
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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