Estudo do desempenho térmico do revestimento argamassado com adição de vermiculita expandida

Abstract

This study aims to analyze the thermal performance of mortar coatings with the addition of expanded vermiculite, evaluating its potential as alternative to conventional materials in used in civil construction. The research is justified by growing demand for solutions that promote thermal comfort and energy efficiency, meeting the minimum requirements established by technical standards. Two different mortar mixtures were prepared, one conventional and the other with a partial replacement of 50% of the sand volume by expanded vermiculite. The samples were molded into test boxes to measure internal and external temperatures over time, following ABNT recommendations and related technical references. The results indicate that the addition of vermiculite in the mortar improves its insulation capacity, demonstrating superior performance in controlling heat transfer. Although the average temperature difference between the two samples is small, it is possible to conclude that the use of expanded vermiculite in mortar coatings represents a viable solution for increasing thermal comfort and energy efficiency.