PARTIAL REPLACEMENT OF FINE AGGREGATE BY GROUNDED GLASS RESIDUE IN CONCRETE:

AN ANALYSIS ON AXIAL COMPRESSION RESISTANCE

Abstract

One of the sectors that most consumes natural resources in the world, with great responsibility for the environmental crisis of this century, is the civil construction sector. Therefore, the global community seeks more efficient and sustainable ways to extract and use natural resources. The most recent awareness regarding the destination of non-degradable materials, such as glass, is a recurring theme in civil construction, as the unbridled extraction of sand for its production, and the disposal without ecological awareness of the product manufactured in nature, are responsible for several impacts negative environmental. In this context, aiming at the production of more sustainable concrete, the use of ground glass waste appears as a possible fine aggregate, to replace sand in structural purposes. Considering this factor, the present research aimed to study the viability of ground glass waste collected from disposal in the city of Ji-Paraná/RO, in partial replacement of fine aggregate in structural concrete of 25 MPa. In order to reach the objectives proposed by the research, laboratory tests were carried out and a comparative analysis was carried out between conventional concrete with a ratio of 1:2,11:3,14:0,586 (cement: sand: gravel: w/c) and concrete with the addition of ground glass residue in partial replacement of 50% of the fine natural aggregate. For such replacement, the material was ground and sieved until a granulometry similar to that of fine natural sand was obtained. Finally, it was possible to verify that the sustainable concrete of partial replacement of sand by ground glass waste does not reach 25 Mpa.