SBR-Based Light Cimental Compositions for use in Sustainable Constructions

Abstract

The practice of sustainable development is a reality present in various segments of society. In this sense, buildings must be ecologically correct, socially just, culturally accepted, and economically viable. Seeking sustainability, the use of non-conventional building materials is increasing, especially for works of social interest. The aim of the present work was to develop light SBR - based composites based on industrial waste from the footwear sector, aiming at the elaboration of construction elements for the thermal protection of masonry.For the production of the composites, Portland cement type CP II F - 32 and a residue from a footwear industry based on SBR were used. For this, the composition of the granulometry of the light aggregate and the appropriate water / cement ratio were defined, and adequate values of resistance to compression, bending and absorption were considered.Therefore, the composition of the granulometry of the light aggregate and the appropriate water/cement ratio were defined, and adequate values of resistance to compression, bending and absorption were considered. Then, the influence of the incorporation content of the lightweight aggregate and the molding pressure to be used in the composites was evaluated, where flexural strength, absorption capacity, bulk density and visual analysis were performed.In addition, the thermal conductivity was determined in the optimized traces aiming the use of these composites as constructive elements for thermal protection of masonry. The lower values of absorption factors and voids index were reached when molding using the pressure level N1 (0.16 MPa). The bulk density factor of the pressure-molded composites reached the lowest values also under the pressure level N1 (0.16 MPa). The composites with higher contents of incorporation of molded waste without pressure showed no results resistance to bending and absorption.