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Microstructure and mineralogy of lightweight aggregates manufactured from mining and industrial wastes

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González Corrochano, B. and Alonso Azcárate, Jacinto and Rodas, Magdalena and Fernández Barrenechea, José María and Luque del Villar, Francisco Javier (2011) Microstructure and mineralogy of lightweight aggregates manufactured from mining and industrial wastes. Construction and building materials, 25 . pp. 3591-3602. ISSN 0950-0618

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Official URL: http://www.elsevier.com/wps/product/cws_home/30405/description



Abstract

The microstructure and mineralogy of lightweight aggregates manufactured with washing aggregate
sludge, sewage sludge and a clay-rich sediment have been studied. The mineralogical analysis revealed
the neo-formation of plagioclase and pyroxene group minerals and a minor presence of gehlenite. Some
relationships may be established: (i) heating temperature and dwell time affect the formation of new
porosity; (ii) the disappearance of pyroxenes could produce changes in the density of the solid material
in the lightweight aggregates; (iii) when an external glassy film is not present, water absorption values
depend on the size and number of each type of pore.


Item Type:Article
Uncontrolled Keywords:Lightweight aggregate; Microstructure; Mineralogy; Washing aggregate sludge; Sewage sludge; Clay-rich sediment;
Subjects:Sciences > Geology > Mineralogy
ID Code:17582
Deposited On:09 Jan 2013 08:50
Last Modified:11 Dec 2018 08:46

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