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The exploitation of sludge from aggregate plants in the manufacture of porous fired clay bricks

Aggregates (gravel and sand) are, after water, the Earth’s second most used natural resource, representing about 50% of all consumed mineral resources. Aggregate production generates a large quantity of waste from the aggregate washing process. This waste is made up of suspended solids - sludge - which has a great environmental impact. It is deposited in huge troughs because of the impossibility of discharging it directly into rivers. Many plants have incorporated decanters and filter presses to separate the solid from the liquid fraction. This paper evaluates the possibility of exploiting the solid fraction (i.e. sludge) in the manufacture of fired clay bricks. The added value of these bricks is, on the one hand, the exploitation of sludge as a currently useless waste product, and on the other, the use of this sludge to enhance the physical and mechanical properties of conventional fired clay bricks

© Materiales de Construccion, 2016, vol. 66, núm. 323, p.e093

Consejo Superior de Investigaciones Científicas (CSIC)

Author: Chamorro Trenado, Miquel Àngel
Pareta Marjanedas, M. Mercè
Berthelsen-Molist, B. E.
Janer-Adrian, F.X.
Date: 2016 July 1
Abstract: Aggregates (gravel and sand) are, after water, the Earth’s second most used natural resource, representing about 50% of all consumed mineral resources. Aggregate production generates a large quantity of waste from the aggregate washing process. This waste is made up of suspended solids - sludge - which has a great environmental impact. It is deposited in huge troughs because of the impossibility of discharging it directly into rivers. Many plants have incorporated decanters and filter presses to separate the solid from the liquid fraction. This paper evaluates the possibility of exploiting the solid fraction (i.e. sludge) in the manufacture of fired clay bricks. The added value of these bricks is, on the one hand, the exploitation of sludge as a currently useless waste product, and on the other, the use of this sludge to enhance the physical and mechanical properties of conventional fired clay bricks
Format: application/pdf
ISSN: 0465-2746 (versió paper)
1988-3226 (versió electrònica)
Document access: http://hdl.handle.net/10256/12697
Language: eng
Publisher: Consejo Superior de Investigaciones Científicas (CSIC)
Collection: Reproducció digital del document publicat a: http://dx.doi.org/10.3989/mc.2016.03915
Articles publicats (D-ATC)
Is part of: © Materiales de Construccion, 2016, vol. 66, núm. 323, p.e093
Rights: Attribution 3.0 Spain
Rights URI: http://creativecommons.org/licenses/by/3.0/es/
Subject: Ceràmica
Pottery
Àrids (Materials de construcció) -- Aspectes ambientals
Aggregate (Building materials) -- Environmental aspects
Residus -- Eliminació
Refuse and refuse disposal
Title: The exploitation of sludge from aggregate plants in the manufacture of porous fired clay bricks
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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