Performance estimation for concretes made with recycled aggregates of construction and demolition waste of some Brazilian cities


Autoria(s): Cabral, Antonio Eduardo Bezerra; Schalch, Valdir; Molin, Denise Carpena Coitinho Dal; Ribeiro, José Luis Duarte
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

04/11/2013

04/11/2013

2012

Resumo

The aim of this paper is to verify the influence of composition variability of recycled aggregates (RA) of construction and demolition wastes (CDW) on the performance of concretes. Performance was evaluated building mathematical models for compressive strength, modulus of elasticity and drying shrinkage. To obtain such models, an experimental program comprising 50 concrete mixtures was carried out. Specimens were casted, tested and results for compressive strength, modulus of elasticity and drying shrinkage were statistically analyzed. Models inputs are CDW composition observed at seven Brazilian cities. Results confirm that using RA from CDW for concrete building is quite feasible, independently of its composition, once compressive strength and modulus of elasticity still reached considerable values. We concluded the variability presented by recycled aggregates of CDW does not compromise their use for concrete building. However, this information must be used with caution, and experimental tests should always be performed to certify concrete properties.

Identificador

Mat. Res.,v.15,n.6,p.1037-1046,2012

1516-1439

http://www.producao.usp.br/handle/BDPI/39852

10.1590/S1516-14392012005000119

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000600030&lng=en&nrm=iso&tlng=en

http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-14392012000600030&lng=en&nrm=iso&tlng=en

http://www.scielo.br/scielo.php?script=sci_pdf&pid=S1516-14392012000600030&lng=en&nrm=iso&tlng=en

Idioma(s)

eng

Publicador

ABM, ABC, ABPol

Relação

Materials Research

Direitos

openAccess

Palavras-Chave #CDW #waste variability #recycled aggregate #concrete
Tipo

article

original article