Caracterização física, química e mecânica de Cimento Portland CPV-ARI de fábricas da Região Nordeste

Abstract

This paper is about description and comparation of seven samples of Portland Cement CPV ARI, produced and sold in our region, which by itself, would already be of great academic and scientific value for bringing such informations to the light of the knowledge. As this study comes about one of the most important raw material for civil construction, for both livinghood and industries and infrastructure of any city in the planet, this knowledge becomes even more valuable. Evaluating its physical, chemical and mechanical properties, it was identified the most relevant variables of the performance of the samples of Portland cement. At the study, it was used seven samples of high initial resistance Portland cement, CPV-ARI, which were obtained from five different industries of the cement pole of the northeast region. The relevance of this study is based on the results obtained at the chemical, physical and mechanical caracterizations, which were obtained on essays, such as X-ray Fluorescence, Laser Granulometry, Fineness, Blaine, Compressive Strength, Start and End of the Setting Time, Fire Loss and Insoluble Residue, X-Ray Diffraction and Structural Refinement by the Rietveld Method. The results obtained revealed that of the seven samples studied, all of them meet the quality requirements, with the exception of Samples A, in the requirement of compressive strength at one day of cure, attributing this behavior to the low values of Specific Area and percentage of Triccalcium Aluminate. Samples (C1, C2, D, E1 and E2) showed excellent initial and final resistance results. Finally, Samples E1 and E2 with better initial and final compression strength results, respectively, attributing these behaviors to the association of better chemical characteristics and a more efficient milling process.