Estudo da adição de feldspato em massa cerâmica de telhas prensadas para produção de adoquim

Abstract

Pavement is an interlocking clay floor that, in addition to a great aesthetic potential, has dimensions that facilitate the installation and contribute to a good distribution of the imposed loads. In this study, the paving stone was made from the ceramic clay mass used in the manufacture of pressed tiles, with and without addition of the feldspar flux. The acquired raw materials, industrial clay and feldspar, are respectively from a red ceramic industry in the Region of Grande Teresina and from a deposit located in the city of Paulistana-PI. They were characterized by X-ray fluorescence, X-ray diffraction, rational analysis, particle size analysis, residual analysis, thermal analysis and plasticity. The specimens were prepared with 10% feldspar incorporation in their mass, in the dimensions 80x10x10 mm by uniaxial pressing at 35MPa and sintered at temperatures of 1000 ° C, 1100 ° C and 1200 ° C. The technological properties evaluated were: linear retraction, fire loss, water absorption, apparent porosity, apparent specific mass, uniaxial compression resistance, abrasion resistance and thermal comfort. All of the samples produced met the international standards for pavers subject to light traffic (NTC 3829: 2004 and ASTM C902: 2015) and almost all formulations at temperatures of 1100 ° C and 1200 ° C met the requirements of standards for heavy traffic pavers (NTC 5282: 2004 and ASTM C1272: 2017).