Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Characterisation and Life Cycle Assessment of Pervious Concrete with Recycled Concrete Aggregates

2021; Multidisciplinary Digital Publishing Institute; Volume: 11; Issue: 2 Linguagem: Inglês

10.3390/cryst11020209

2073-4352

Adilson de Paula, Cláudia Jacinto, Thaís Larré Oliveira, Antônio Eduardo Polisseni, Fabio Martins Brum, Elisabete Teixeira, Ricardo Mateus,

Underground infrastructure and sustainability

The search for environmental preservation and conservation of natural resources gives rise to new concepts and viable technical solutions on the path to sustainable development. In this context, this study’s main objective is to analyse the influence of recycled concrete aggregates (RCAs) on the development of pervious concrete, whose use as a floor covering represents an excellent device to mitigate the urban soil sealing phenomena. For this, mechanical and hydraulic tests were carried out, in addition to microstructural analyses and the assessment of its environmental performance. The results obtained were compared to reference studies also involving the incorporation of recycled aggregates. A pilot-scale case study was conducted, involving a parking space lined with pervious concrete moulded “in situ”. In laboratory tests, permeability coefficients and mechanical strengths compatible with the literature and above the normative limit for light traffic were found. The case study demonstrated higher permeability than in the laboratory, but the flexural strength was lower, being indicated only for pedestrian traffic. The environmental assessment showed that the RCA represents a positive contribution to the environmental performance of pervious concrete. Still, attention should be given to the recycled aggregate transport distance between the concrete plant and the RCA treatment plant.