Título:
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Procedural uncertainties of Proctor compaction tests applied on MSWI bottom ash
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Autor/a:
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Izquierdo, Maria; Querol, Xavier; Vázquez Ramonich, Enric
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Otros autores:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria de la Construcció; Universitat Politècnica de Catalunya. MATCAR - Materials de Construcció i Carreteres |
Abstract:
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MSWI bottom ash is a well-graded highly compactable material that can be used as a road material in unbound pavements. Achieving the compactness assumed in the design of the pavement is of primary
concern to ensure long term structural stability. Regulations on road construction in a number of EU countries rely on standard tests originally developed for natural aggregates, which may not be appropriate
to accurately assess MSWI bottom ash. This study is intended to assist in consistently assessing MSWI bottom ash compaction by means of the Proctor method. This test is routinely applied to address unbound road materials and suggests two methods. Compaction parameters show a marked procedural dependency due to the particle morphology and weak particle strength of ash. Re-compacting a single batch sample to determine Proctor curves is a common practise that turns out to overvalue optimum
moisture contents and maximum dry densities. This could result in wet-side compactions not meeting stiffness requirements. Inaccurate moisture content measurements during testing may also induce erroneous
determinations of compaction parameters. The role of a number of physical properties of MSWI bottom ash in compaction is also investigated. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures -Àrees temàtiques de la UPC::Enginyeria dels materials::Disseny i selecció de materials -Incinetarion bottom ash -Road materials -- Evaluation -Carreteres -- Materials de construcció -Cendres de fons |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Artículo |
Editor:
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Elsevier
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Compartir:
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