Análise técnica e econômica da utilização de areia de britagem com granulometria otimizada em argamassa de chapisco e emboço

Abstract

The mining industries, mainly of rocks, generate a high volume of waste, much of this residue has no specific purpose. The use of this waste as sand from the crushing of rock, adopting appropriate procedures and equipment, can be a viable alternative to both that this material has a proper allocation and use, as well as for the replacement of natural sand to produce mortar for laying and masonry coating. This study characterized and evaluated the use of waste crushing replacing natural aggregate to produce roughcast and plaster mortars in fresh and hardened state. Were studied many traces of mortar (cement: sand) as well as the combination for these materials, for this were produced 8 roughcast mortar and 3 mortar plaster which were applied in a masonry wall. For each roughcast had three combinations of plaster that had the intention to compare the combinations and analyze technical performance. With the fresh mortars were determined: the mass density, content of incorporated air and the water retention. With the mortar in the hardened state was done the strength test of adhesion in tensile. Finally, it is concluded that the mortars made with the alternative aggregation showed in the requirements workability and tensile strength that are perfectly acceptable and can indeed replace the mortar produced with natural sand.