Effect of natural ageing on volume stability of MSW and wood waste incineration residues |
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| Authors: | Manuela Gori Britta Bergfeldt Jürgen Reichelt Piero Sirini |
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| Institution: | 1. DICEA, Department of Civil and Environmental Engineering, University of Florence – Via S. Marta, Florence 50139, Italy;2. KIT, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany;3. IBR, Institut für angewandte Bau- und Reststoff-Forschung, Obergrombacher Straße 29, D-76646 Bruchsal, Germany |
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| Abstract: | This paper presents the results of a study on the effect of natural weathering on volume stability of bottom ash (BA) from municipal solid waste (MSW) and wood waste incineration. BA samples were taken at different steps of treatment (fresh, 4 weeks and 12 weeks aged) and then characterised for their chemical and mineralogical composition and for volume stability by means of the mineralogical test method (M HMVA-StB), which is part of the German quality control system for using aggregates in road construction (TL Gestein-StB 04). Changes of mineralogical composition with the proceeding of the weathering treatment were also monitored by leaching tests. At the end of the 12 weeks of treatment, almost all the considered samples resulted to be usable without restrictions in road construction with reference to the test parameter volume stability. |
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