Incorporação do rejeito de couro em placas de gesso para uso em construções rurais.

Abstract

Considering that the disposal of waste from industries can be harmful to the environment and, considering that solar radiation and excess emission acoustics can be limiting factors for thermal balance, acoustic comfort and animal performance, it is necessary to study the reuse of these wastes, with the aim of minimizing environmental impacts, providing improvements to buildings and comfort for those who use them. Based on this premise, this study aims to evaluate the feasibility of implementing leather waste in powder form and in the form of shavings, coming from the footwear industry in the municipality of Campina Grande-PB to the plates plaster used as masonry coating and roof lining, aiming to promote greater thermal and acoustic comfort for buildings. In this way, the research consisted of stages in which the characterization of materials composed of added gypsum was carried out of the waste in powder form at 2.5%, 5.0% and 10.0% and in shavings at 10.0%, 15.0% and 20.0%, and then Their resistance was evaluated using the flexion test. There was also a evaluation of thermal and acoustic performance, compared to the control (0.0% addition of tailings). As a result, it was obtained that the heat flow presented a higher value high in the treatment of 5% powder waste and lowest with 10% powder. The witness it was similar to the treatments of 2.5% dust and 10 and 15% shavings. Comparing to control with the inclusion of 5% of powder, an increase of 1.48% in the flow of heat. Comparing the 10% powder treatment with the control, a decrease of 2.60% in heat flow and in relation to acoustic insulation, it is observed that the witness provided greater perception of noise and when adding the waste, there was decrease in the observed value. The treatment that presented the lowest noise perception was the one with 20% of shavings, followed in ascending order by treatment with 10% of dust, 10% shavings and 5.0% dust, 2.5% dust and 15% shavings. Comparing the witness with the treatment that presented the lowest noise, a drop of 18.25% in values ​​was observed measured.