<b>The use of scrap rubber tire residues in finishing mortar for construction</b> - DOI: 10.4025/actascitechnol.v29i2.583

Abstract

This work evaluates a finishing mortar containing residues of discarded rubber tires, produced with cement, lime and sand, in a ratio of 1:1.5: 9, mixed by volume, with the addition of crushed rubber powder in the proportions of 0, 6, 8, 10 and 12% of aggregate volume. Specific mass, the level of air content and water retention were evaluated in the plastic state. In cylindrical specimens, the axial compressive strength, traction resistance by diametral compression, static deformation module and water absorption by immersion were evaluated in the dry state; and the tensile bond strength and the fissuration in the specimens applied on substratum. The mortar with tire residues presented lower incidences of visible fissures in the finishing, reduction in the deformation module and resistance, and an increase in the level of air content. The studied product is an alternative that can contribute to the reduction of fissures in cemented coverings.