TITLE:
The Behavior of Recycled Concrete through the Application of an Isotropic Damage Model
AUTHORS:
Marcelo Pedreira da Silva, Magno Teixeira Mota, Anderson de Souza Matos Gadéa, Mônica Batista Leite, Koji de Jesus Nagahama
KEYWORDS:
Recycled Concrete, Construction and Demolition Waste, Isotropic Damage, Mazars Isotropic Model
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.5 No.3,
September
29,
2015
ABSTRACT: The main goal of this paper is to describe the mechanical behavior of the CDW recycled concrete in compression, using an isotropic damage model adapted to the variation of the replacement rate of natural aggregates by recycled ones. The isotropic model by Mazars was used as a constitutive equation for the CDW concrete and its adjustment parameters, A and B, were written as quadratic polynomials according to the aggregates replacement rate. The model was evaluated for conventional and recycled concretes. For the latter ones, the aggregates replacement ratios evaluated were 50% and 100%. The results show good approximation between the analytical and numerical values obtained with the adapted isotropic damage model and experimental concrete results for both compressive and flexural strength.