Avaliação do desempenho de argamassas colantes em parede de concreto não lavada de acordo com a NBR 13754:1996 e a NBR 14081-3:2012

Abstract

Industries linked to the civil segment are commonly interested in ceramic coatings and mortar production, since Brazil has presented in the last years high consumption of these products, in the face of such scenarioit is of interest to evaluate the quality and performance of commercial mortars for the installation of ceramic coatings. Thus, the quanti-qualitative study, which includes a case study as a survey, seeks to ascertain the quality and performance of the manufacturer 1’s commercial mortars (AC-I, AC-II and AC-III), from manufacturer 2 (AC-I, AC-II and AC-III) (AC-I, ACII, AC-III) for ceramic coating laying on un-washed concrete wall from NBR 13754:1996 and NBR 14081-3:2012 standards. In front of NBR 13754:1996 and NBR 14081-3:2012 it was possible to determine values of resistance to traction adhesion (NBR 13754:1996), assumption of open time (NBR 14081-3:2012), observations and inferences of the ways in which the uprootings and ruptures of the commercial adhesive mortars occurred.It was evaluated that the mortar that presented the most adhesion was the AC-II manufacturer 3 and the one that obtained the lowest adhesion was the AC-I of manufacturer 2, the observational requirements of grubbing inferred that all mortars were broken at the mortar/substrate interface in different proportions, ensuring that all the attraction resistance values were equal to those of the tests. The mortars of manufacturer 3 AC-I, manufacturer 2 AC-I and AC-II did not meet the open time limit required by the standard. However, it was found that the mortars that presented better performance and proved to be of higher quality for the settlements of ceramic coatings on a non-washed concrete wall, were the mortars manufacturer 1 AC-I and AC-II.