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.
Highlights
The description of the mechanical behavior of conventional concrete already has consistent analytical models in science
The construction and demolition waste (CDW) composition and the aggregate production procedures result in the variability of the physical, chemical and mechanical characteristics of the aggregates that will considerably interfere in the mechanical behavior of the recycled concrete achieved
In this article an isotropic damage model was applied for the description of the mechanical behavior of recycled concrete by means of adapting the parameters A and B described by Mazars [18] for conventional concrete
Summary
The description of the mechanical behavior of conventional concrete already has consistent analytical models in science. Models based on the theory of elasticity, plasticity, in the mechanics of fracture and damage and in their combinations, are able to describe the real phenomena in a broad sense. Special concretes, such as recycled concretes, still need specific constitutive equations so to be analytically represented. The construction and demolition waste (CDW) composition and the aggregate production procedures result in the variability of the physical, chemical and mechanical characteristics of the aggregates that will considerably interfere in the mechanical behavior of the recycled concrete achieved
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
