MECHANICAL, THERMAL AND ACOUSTIC ANALYSIS OF MORTARS WITH REPLACEMENT OF FINE AGGREGATE BY EXPANDED CLAY
Thermal comfort, Sound insulation, Light mortar
In the Civil Construction scenario, the thermal and acoustic performance of buildings is a relevant topic for scientific research, especially after the publication of ABNT NBR 15575:2013, known as the performance standard. Under this bias, the objective of the work was to analyze the mechanical, thermal and acoustic behavior of lining mortars, using different contents of a fine fraction of expanded clay as a partial substitute for the conventional aggregate. To carry out the work, the thermal conductivity of the mortars was determined and laboratory tests were carried out with the aid of incidence and heat transfer and noise simulators in the samples, as well as tests to determine the physical properties of materials and mechanical properties of the mixtures. The results show that the mortars incorporating expanded clay did not show significant impacts on their mechanical properties and with regard to sound insulation. On the other hand, it was observed that the increase in the expanded clay content in the composition of the mixes reduced the thermal conductivity and increased the thermal insulation of the samples. Thus, the influence of light aggregate on the thermal behavior of the mortars under study is evident, without compromising their mechanical and acoustic behavior.