Análise das propriedades físicas e mecânicas de argamassas incorporadas com polímero.

Abstract

Civil construction is the main industry that drives the economy of a country. Thus, as engineering evolves, society gains in infrastructure, job creation, quality of life, technological innovations. On the other hand, it is one of the sectors where most raw material is consumed, in addition to holding the title of the factory that consumes the most inputs from society. Bases on this reality, the search for sustainable solutions has become frequent in the civil construction sector. The addition of polymers in the construction processes is one of the main fronts to combat this statistic. These polymers increase in mortars, concretes and other inputs, important properties that improve their performance and make processes more effective. Recycled polymers have been growing in application in civil construction precisely because this interaction brings gains in propertiesn in addition to having an important environmental bias. This study aims to analyze the effect of adding ethylene polytherephthalate (PET) on the pysichal and mechanical properties of mortars. Characterization tests were carried out on cementitious binder, fine aggregate and PET. After the trace definition specimens with dimensions of 5 x 10 cm were molded with PET contents in the values of 5%, 10%, 15%, 20% and 25%. Resistance to axial compression, resistance to attack by sulphates and resistance to tensile adhesion were determined. For the hardened state, the addition of this aggregate did not bring significant gains in the tests of compression and tensile adhesion, since relation to attack by sulfates, the polymer aggregate behaved in a negative way. However, the polymer brings important gains in the fresh state of the mortar, increasing its water absorption, workability, consistency, mass density.