Avaliação de desempenho de manta polimérica dupla face para o assentamento de placas cerâmicas de revestimento

Abstract

The construction industry in Brazil has been undergoing changes in construction practices, driven by growth in the sector and the need to meet the national housing deficit that is approaching eight million housing units in 2012 (SAE, 2012). Regarding the development of the activities of modern construction, ceramic tile settlements techniques on surfaces such as floors and walls showed no significant development, the same can be stated in relation to the implementation of the concepts/practices related to sustainability. This paper presents a study on the double-sided adhesive polymeric material (adhesive foam) comprising a polyethylene foam with contact acrylic adhesive applied on both sides, to replace the use of cement (as mortar), in ceramic settlements using variables that influence the adhesion between the settable material and porcelain plates. Mortar ACIII (ABNT, 2012) was used as the reference. The use of adhesive foam is presented as an innovative technique and the aspects of its use can be analyzed by comparing the reliabilities of different systems (foam x mortar) using tests of tensile and shear strengths. The tensile and shear strength data obtained with mortar behaved less homogeneous, where there are high variations when comparing with the reference condition (normal cure). Tests done with the Adhesive Foam have showed more uniform behavior when comparing with the reference condition. Mathematical models were constructed based on finite element analysis to simulate the conditions of use of both types of settlement. The evaluation was performed bysimulating a thermal gradient of 40 ° C. The values obtained in tensile have shown that the limit for adhesive foam, that today has no established standard in Brazil, may be established in a lower value than that indicated for adhesive in different cure conditions.