SANTOS, B. L. F.; http://lattes.cnpq.br/5699279583994294; SANTOS, Bervylly Lianne de Farias.
Résumé:
The construction sector, although it is one of the sectors that most exploits natural
resources in its production process, also presents one of the greatest potential
for the use of various residues from the industry, by incorporating these residues
as inputs of new materials, thus enabling viable alternatives in economic and
sustainable terms. The Concrete, in all its most diverse compositions, is one of
the most consumed materials in the world, in charge of providing the buildings
stability and specific characteristics of resistance and workability. The study of
the incorporation of industrial waste as a material to be added to the concrete
mass is fundamental in the construction industry, as it encourages the reuse and
correct disposal of the substrates, it explores the various possibilities of
integration between segments and the productive chains, being possible, through
tests, to find new compositions with comparable performance or even superior to
those already existing on the construction sector. The rubber from useless tires
is among the waste most significant in volume and environmental impact
produced for by industry. In these ways, this research aimed to evaluate the
performance of the concrete incorporated with waste generated in the production
of tires. For this, the cylindrical specimens were molded in the 10cm x 20cm
dimensions with partial replacement of the small aggregate by percents of 10%
and 20% of rubber from tires. Physical and mechanical tests of the residue,
conventional aggregates and cement and the physical, mechanical and
microstructural characterization of the concrete incorporated to the rubber
residue were held out through tests of resistance to axial compression, tensile
strength by diametrical compression, absorption, apparent specific mass, and
scanning electron microscopy. It was observed that the substitution of the
conventional small aggregate with contents of 10% and 20% of tire rubber residue
promoted the reduction of the mechanical properties of the concrete and
elevation of the absorption, making its use unviable for structural purposes,
however, the results obtained allow their use for diverse purposes, such as
means wires, sidewalks, sealing blocks and bicycle paths.