PRODUÇÃO DE ARGAMASSAS DE CIMENTO PORTLAND COM ADIÇÃO DE GRAFITE EM PÓ

Abstract

Due to the need to seek to improve the characteristics of Civil Construction materials and the importance of minimizing the pollution generated by this sector, companies and researchers are analyzing the possibility of adding or partially replacing materials such as Portland Cement with less polluting compounds or even recycled. In view of this, Portland Cement mortars were produced receiving varying amounts of powdered graphite in its cementitious matrix in order to verify whether such addition provides benefits to the product. Tests of mechanical resistance to compression were also carried out, in addition to the consistency index. Prior to these tests, others were carried out that made it possible to determine the ideal dosage for the addition. For analysis and control of the results, a reference composition was produced, which received no addition. Of the additions, we opted for the proportions of 0.25%, 0.50% and 1.00% in relation to the amount of cement. Resistances were verified at 7, 28 and 90 days of cure. It was observed that all the compositions with addition resulted in a gain in the resistance to compression and the composition that presented the best performance after 90 days in was the one that received an addition of 0.50% graphite in dust. The results obtained for the consistency index were considered as expected.