STUDY OF COMPARATIVE PARAMETERS BETWEEN INDUSTRIALIZED, DESIGNED AND MOLDED MORTARS IN SITU

Mortar coatings represent one of the most relevant subsystems of civil construction, which perform functions of protection, aesthetic finish and contribution to the durability of buildings. Among the different typologies, the mortar produced in situ, the industrialized mortar and the designed mortar stand out, each with particularities that influence productivity, cost and performance. In this context, the present study aimed to analyze the adhesion strength of industrialized mortar, as established by ABNT NBR 13528-1:2019, ABNT NBR 13749:2013 and discuss the results in comparison with other researches. The methodology used was characterized as qualitative, exploratory and descriptive, based on a literature review and on tests conducted in Teresina-PI, with specimens submitted to pullout tests. The results showed that, in most cases, the failure stresses of the industrialized mortar exceeded the minimum value established by the standard, although some specimens presented lower results, evidencing the influence of factors such as substrate preparation, surface cleanliness and application process. The comparative analysis confirmed the importance of correct execution and compliance with regulatory requirements to ensure the quality of the coating, structural safety and longevity of buildings. It is concluded that the use of industrialized mortar is an efficient alternative to conventional methods, as long as it is combined with technical standards. Furthermore, the relevance of this study is highlighted as a resource for professionals and academics, providing practical and theoretical parameters that can guide future research and the development of more effective techniques in the construction sector.