Propriedades mecânicas de concreto produzido com a areia natural e areia artificial

Abstract

The research proposes the verification of the mechanical properties of the concrete produced with natural sand and artificial sand. Due to aspects related to concrete, among which the following stand out: being widely used in civil construction; having sand as one of its main components; increase in legal restrictions imposed on the exploitation of natural sand based mainly on the great environmental impact caused by the activity; and the growing increase in product costs due to the exhaustion of deposits near consumer centers. In view of this scenario, studies involving materials that can replace this fine aggregate in the mixture become relevant. One of the alternatives is the use of artificial sand to replace natural sand in the production of concrete. However, this substitution cannot be done at random. So, in this study, three different concrete strokes were produced for the two types of sand. For this purpose, tests were carried out to characterize the materials according to the relevant standards, dosage of the concrete by the IPT / EPUSP method and tests to determine the compressive strength, tensile strength by diametrical compression and modulus of elasticity. Finally, the mechanical properties of the concretes produced with natural sand and artificial sand were analyzed. It was found, then, that the concrete produced with artificial sand had better mechanical properties in the poor and basic lines, given the determined slump and the characteristics of the materials used. It is considered that the objective of the research was contemplated, proving the possibility of total substitution of natural sand by artificial sand in the production of concrete.