Resíduo de pneu como matriz de compósito reforçado com pó de marmoraria, lama e escoria de alto- fomo

Abstract

The concem about the disposal of waste tires has been the subject of interest for many researches. The most of scrap tires is abandoned without any treatment in garbage dumps, waterways, waste1ands, where they wil1 be exposed to the weather, accumulating water and, therefore, become a major attraction of insect vectors of disease, causing serious public health prob1em. An alternative and efficient so1ution for the disposal of waste tires is in the production of composite materiais, providing new applications for this material, such as paving b1ocks. In this work, a study of composites for pavements was made using tire waste as matrix and the residue of marb1e factory, b1ast furnace s1ag and b1ast furnace s1udge as reinforcement phase. In reinforcements materiais were carried out mineralogical characterization and particle size distribution. The reinforcements were used separate1y in the composite in proportions of 5%, 10% 15% and 20% by weight. The synthesis of composite consisted of the vulcanization process at 160 °C. Techno1ogical characterizations and compression set tests were carried out at 28 oc and 70 °C, swelling test in times of 1O, 30 and

50 min, and micrographic analysis by scanning e1ectron microscopy. The use of mud and b1ast-furnace s1ag as reinforcing filler in amounts of 5% and 10%, obtained the best results from the tests conducted, showing that these composites may be app1ied in pavements.