Efeito da adição do resíduo de calcário nas propriedades tecnológicas do concreto pré-moldado

Abstract

The adequacy of waste that could be disposed in the environment into new working techniques and applications can be considered as the major thrust for sustainable growth. Concrete is the second most common material consumed in the world, moreover, it is a product technological innovation that allows enough to be effective in different conditions. The city of Marabá is surrounded by several steel industries and thus generating large waste such as limestone. Growth in the construction business in the region is remarkable and measures such as the use of precast for acceleration of works increases every day. The aim of this work is to incorporate this residue to the concreteag in association with regional agragates to produce precast pieces. Three formulations developed, using low, medium and high cement content. In each formulation it was calculated over three lines with material being added at 5%, 10% and 15% in partial substitution of the sand, identifying four strokes per amount of cement totaling twelve strokes performed. The characterization was carried out separately. The workability and compressive strength properties were analyzed. The results showed significant improvements in all cases for both workability and resistance.