Melhoramento do tijolo de solo-cimento, com adição do resíduo do corte do mármore e granito (RCMG)

Abstract

With the theme of sustainability in high these days, it becomes increasingly evident the need to develop techniques and materials that provide the development of the construction industry in partnership with the environment, even if it is not full agreement between them that the impacts caused by the same are the possible minimum. Thus this research, aimed to promote the improvement of an existing product, soil-cement wall with the use of a residue that generates big problems for the environment, the waste of the cutting marble and granite. In the mixture the residue was applied in substitution for a part of the sandy soil volume that was used in the work that this soil was taken from the region Delmiro Gouveia-AL. To this it was determined four lines, the first being only soil and cement, and the other three with the addition of the residue, 5%, 10% and 15% respectively. In all, 80 molded bricks 20 for each stroke, as indicated by the NBR 10833 and 20 of these 10 chosen to carry out the resistance tests to simple compression with 7 bricks and water absorption 3 bricks. All traces corresponded to the criteria of water absorption and resistance to compressive set NBR 8491, where no bricks had individual values of compressive strength lower than 1.7 MPa or higher water absorption than 22%. With the incorporation of the residue the mixture was observed a simple compressive strength of growth was 2.5 MPa, and this average value with 0% residue, to 2.85 MPa, and this average value 15% residue. Studies have shown that the use of the residue for the manufacture of soil-cement clinker is a good allocation to the residue of granite and marble cutting, and improve final product properties at a low cost.