Análise da influência da muscovita na transmissãode calor das argamassas de revestimento

Abstract

Mortar rendering is almost mandatory in buildings to protect and give the appearance expected and, with the environment as an appeal nowadays, all the possibilities of this type of coating should be studied, trying to extract its performance to the maximum. Aware of this expectation, this work seeks to contribute to the use of new materials in the field of engineering with satisfactory thermal performance, in this case, the muscovite mineral, with low thermal conductivity. The objective of this work is to certify if the mineral reduces heat transmission. For that, muscovite was added with factors between 10% and 30% of the total weight of the mortar, that is, added the weights of cement, fine sand and hydrated lime. Thus, eight specimens were made: without the addition of Muscovite, with the additions of 10% and 20% respectively and finally, with the addition of 30% Muscovite. Therefore, the incorporation of Muscovite to cement, sand, lime and water mortar decreases the thermal conductivity, and at a level of 10% we observed an approximate 45% reduction in the thermal conductivity value compared to the sample without Muscovite. With mortar being a good insulator and transmitting less heat, we can expect less energy expenditure to maintain a pleasant temperature at any time of the year, both winter and summer, to heat or cool the environment.