Tijolos de adobe de solo-cimento com adição de resíduo de poliestireno expandido reforçados com fibras de polietileno

Abstract

The generation and inadequate disposal of waste, added to unsustainable consumption patterns, generate accumulations and negative impacts on the environment. The construction industry is a sector that generates waste at all stages of its production process, and such waste when not properly treated can cause environmental problems such as contamination of soil, air and surface or underground water. In this scenario, the development and study of materials and sustainable construction techniques become relevant. The rescue and the improvement of the construction techniques with the land are presented as an interesting alternative for the sustainable development of the construction sector, not only for reducing the generation of residues during the construction process, but also for making possible the reuse of the residues generated by the own construction industry industry and other sectors. Within this context, the present work proposes an evaluation of soilcement adobe bricks with the addition of expanded polystyrene residue and reinforced with polyethylene fibers, by checking the compressive strength, shrinkage and cracking of the blocks, for a curing period 7 days. For that, blocks obtained with an incorporation of 0.5%, 0.75% and 1% of polyethylene residue and blocks with an incorporation of 0.125%, 0.25% and 0.50% of expanded polyethylene residue were obtained , with the purpose of analyzing the effect of each addition, relating the results obtained to the physical characteristics of the proposed materials. An incorporation of expanded polystyrene residue in the soil-cement matrix promoted losses of resistance to simple compression, while an incorporation of polyethylene fibers in addition to promoting strength gains obtained, was able to neutralize the retraction and cracking of the soil-cement mixture. cement. A simultaneous incorporation of the two residues is shown to be advantageous as a result of a lighter, more resistant block with less potential for shrinkage.