Journal
CEMENT & CONCRETE COMPOSITES
Volume 34, Issue 1, Pages 48-54Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2011.08.015
Keywords
Sanitary ceramic waste; Characterisation; Recycled aggregates; Ecoefficient concrete; Microstructure; Strength
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The sanitary ceramics industry inevitably generates wastes, irrespective of the improvements introduced in manufacturing processes. The present study investigated the reuse of these wastes as recycled coarse aggregate in partial substitution (15%. 20% and 25%) of natural coarse aggregates in the manufacture of structural concretes. The results demonstrate that recycled, eco-efficient concretes present superior mechanical behaviour compared to conventional concrete and it was moreover appreciated that the recycled ceramic aggregate does not interfere in a negative way during the hydration process. It was also observed that the microstructure in the interfacial transition zone (ITZ) between recycled ceramic aggregate and paste was more compact than in the case of natural aggregate and paste. (C) 2011 Elsevier Ltd. All rights reserved.
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