Estudo da durabilidade de argamassa produzida com agregado reciclado.

Abstract

In Brazil, the most widely used building system is the use of masonry walls lined with mortar layers, such as chapisco, plaster and plaster, inside and outside the buildings. This type of flooring most commonly occurs in low- and middle-income housing, where cement-based slabs and mineral aggregates are cost-effective. Thus, the search for products that are efficient, have low costs and cause little or no damage to the environment has been encouraging more research on products from renewable sources and whose exploitation benefits the society that exploits them. The use of waste has been shown to be a good alternative in reducing the impact caused by the disordered consumption of raw materials and the reduction of disposal areas, considering the increasing volume of waste disposed of each year worldwide. This study aims to study the durability of mortars incorporated with Polyethylene Terephthalate in contents of 5,10,15,20 and 25% by resistance to sulfate attack. Specimens will be molded in the dimensions of 5 x 10 (cm) and durability will be evaluated for ages 7,14, 21, 28, 35 and 42 days, for the reference mortar and for the mortar with replacement of natural aggregate by recycled aggregate. The results indicated that the tests carried out with mortars of all percentages, none of them was able to be effective in combating the expansion caused by the attack of the sulfate solution.