Estudo de dosagem de concreto para traços pobres com agregados da região de João Pessoa-PB

Abstract

The concrete for being the most popular material in the industry of civil building it has the extreme necessity to study your behavior because also been a material widely used has a huge complexity. In that way, the present work aimed to bring a huge study on the concrete dosing in a range considered poor in cement consumption with grout contents ranging from 0.52 to 0.62. Were considered two situations. The first using just water to arrive enough workability for molding test bodies. The second, in search of a reduction of about six centimeters, bounding the water consumption and adding addictive. Were done experiments for the characterization of concrete and its aggregates. To the aggregate of the concrete were realized the established tests by a standard to each one of them. As for the concrete, was decided to prioritize the consistency of its analysis through the abatement test and its resistance to axial compression. With the results of the tests, it was observed an oscillatory behavior in the compressive strength of the concrete, when its content of mortar, different from the expected one that would be the existence of an ideal mortar content, presenting greater resistance, followed by other contents with gradually lower resistance. Beyond that, it was seen the influence of the plasticizer additive on the workability of the concrete without any marked change in the strength of the concrete.