MORTAR FOR TACTILE FLOOR WITH PARTIAL AND TOTAL REPLACEMENT OF TIRE WASTE

Abstract

The construction sector, aware of the importance of environmental issues, has sought to find solutions that combine environmental preservation with industrial economic growth. To this end, several studies have been carried out on the reuse of waste tires, including the use of waste rubber aggregates as a substitute for natural aggregates in concrete and mortar. The aim of this work was to evaluate the replacement of natural aggregate with waste tire rubber, in the # 1 to 2 mm fraction, in proportions of 50% and 100% by mass. The experimental methodology was structured in three phases. In the first phase, the constituent materials of the mortars were characterized. In the second phase, the cementitious composites were processed into cylindrical and prismatic specimens and tactile floor slabs. In the third phase, axial compressive strength, flexural strength, flexural tensile strength and permeability studies were carried out. The results show that the axial compressive strength reached 3.24 MPa for the mortar with 50% substitution, while with 100% substitution it reached 1.33 MPa. For the tactile floor and the slab, with 50% substitution it reached 652.62 kgf/m² and 3375.26 kgf/m², respectively, and with 100% substitution it was 387.49 kgf/m² and 2059.83 kgf/m², respectively. The permeability of the mortar with total substitution increased by 37.5% compared to the partial substitution of 50% rubber waste.