O uso de solo-cimento com adição de pó de pneu recauchutado na fabricação de tijolos ecológicos

Abstract

The reuse of waste in civil construction has been a viable option for reducing the consumption of natural materials and their inadequate distribution of waste in the ecosystem. In this work, the reuse of the retreaded rubber tire powder was evaluated, in partial replacement of the natural fine aggregate, for the production of soil-cement bricks. Ecological bricks are obtained by mixing proportional parts of soil, cement and water. The substitution was made in relation to the small aggregate in the proportions of 5% and 10%, this residue was provided by the environment secretary of the municipality of Delmiro Gouveia. The following properties were investigated: granulometric analysis, resistance to compression, water absorption and specific gravity. In this sense, it was verified that there was an increase in the compressive strength of 4.43% in the ecological blocks with an increase of 5% of the residue, in this same segment, there was a reduction of 15.93% in the ecological bricks with an increase of 10% of waste, in this same aspect, there was a reduction in water absorption and voids rates, which also contributes to the decrease in compression. Thus, the use of tire rubber residue, in partial replacement of natural sand in cement-soil for the production of ecological blocks, in addition to effectively contributing to sustainability in civil construction, through the economy of extraction of raw materials and reduction of disposal and inadequate accumulation of waste tires, providing improvements to some properties important to the efficiency and quality of bricks.