Estudo do uso de cinza de cavaco de bambu (bambusa vulgaris) na produção de cerâmica estrutural vermelha

Abstract

While tons of clays are used monthly by the ceramic industry to produce ceramic materials, a large amount of ash from the burning of the energetic matrix in the kilns is generated. One of these energetic matrices that has been widely used is the bamboo chip (Bambusa Vulgaris). Both the reduction of the main raw material consumption and the improvement of its technological performance can occur with the incorporation of residues in the ceramic mass, in addition, it can allow many types of pollutants generated by the industry to have a suitable destination. This work aims to analyze the compositions of ceramic masses incorporated with bamboo chip ash used in the production of blocks. For this, the raw materials were characterized in their chemical and mineralogical composition, granulometry and thermogravimetric analysis. The specimens were extruded with percentages of 0%, 05%, 10% and 15% of the ash in relation to the weight of the ceramic mass and burned at temperatures of 800°C, 900°C and 1000°C. Afterwards, the specimens were submitted to macrostructural and microstructural analysis, technological performance tests of linear retraction, porosity and bending rupture stress. The results showed an improvement of the mechanical properties with addition of 10% of the burned ash at the temperature of 900°C compared to the results of the reference mass.