Recycling of solid construction waste is presented as a sustainable and economically viable
alternative, especially when applied in an industrial context, such as the production of
precast concrete structures. However, the use of recycled concrete aggregates (RCA) for
the production of structures still generates many uncertainties due to the variables related
to the origin of the material itself. In this context, this work seeks to analyze the behavior
and the strength to splitting failure of RCA structural elements. An experimental program
was developed with 36 local prismatic specimens to evaluate the influence of parameters
such as the rate of replacement of natural aggregates by recycled aggregates (0%, 30% and
100%), loading concentration and the performance of transverse reinforcement. All
specimens failed by splitting, and the strength, rupture, displacements and strains in
concrete and reinforcement were analyzed. The results were compared with other studies
in the literature and with standard codes of ACI 318 (2014), fib Model Code 2010 (2013),
Eurocode 2 (2004) and ABNT NBR 6118 (2014). No evidence was found of an influence
on behavior and strength to splitting failure of structural elements using RCA at different
replacement levels. However, it was found that factors such as loading concentration and
use of transverse reinforcement interfere in the way the strains are distributed in the
structure, which can increase or reduce the ductility and splitting strength, despite being
parameters that could be neglected by normative recommendations for concrete structures
projects.
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