Produção Nacional
Revisado por pares
Mechanical properties modeling of recycled aggregate concrete
2009; Elsevier BV; Volume: 24; Issue: 4 Linguagem: Inglês
10.1016/j.conbuildmat.2009.10.011
ISSN1879-0526
AutoresAntônio Eduardo Bezerra Cabral, Valdir Schalch, Denise Carpena Coitinho Dal Molin, José Luís Duarte Ribeiro,
Tópico(s)Innovative concrete reinforcement materials
ResumoThe variability observed in the composition of construction and demolition (C&D) waste is a problem that inhibits the use of recycled aggregates in concrete production. To contribute in this field, a research was carried out varying water/cement ratio and substitution percent of natural aggregates by recycled aggregates. The experimental program used samples of main Brazilian C&D waste sources, which are concrete, mortar and red ceramic bricks as well as tiles. Results of concrete compressive strength and elastic modulus were statistically analyzed and modeled. The study shows that for both concrete properties, recycled coarse aggregate was more influential than recycled fine aggregate. However, the use of fine recycled red ceramic increased concrete strength. Coarse recycled red ceramic aggregate and fine recycled concrete aggregate exercised the largest and the smallest influence, respectively, in concrete properties.
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