Uso potencial de ceniza de lodo de depuradora como sustitución de árido fino en bloques de hormigón prefabricados
- María Teresa Pérez Carrión 1
- Francisco Baeza Brotons 1
- Pedro Garcés Terradillos 1
- Óscar Galao Malo 1
- Jordi Payá Bernabeu 1
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1
Universitat d'Alacant
info
ISSN: 0012-7353
Year of publication: 2013
Volume: 80
Issue: 179
Pages: 142-150
Type: Article
More publications in: DYNA: revista de la Facultad de Minas. Universidad Nacional de Colombia. Sede Medellín
Abstract
This paper is focused on the assessment of sewage sludge ash added on precast concrete blocks, therefore, based on a matrix of Portland cement with particular characteristics (dry consistency). A pilot experience was performed, by manufacturing commercial concrete blocks at an industrial local plant, using mixes in which sand replacements of 5, 10 and 15% by sewage sludge ash, being the results compared with reference concrete block (without sand replacement). The tests applied are prescriptive for marketing as European regulations (CE marking), which will also let to test the physical and mechanical properties of concrete. The results are promising: these wastes could be commercialized, because the improvement of the characteristics of the concrete blocks such as compressive strength, and consequently to reduce a large volume of a material typically used as a raw material and by means of the valorization instead of sending to landfill