BORGES, A. K. S. M.; http://lattes.cnpq.br/3953879754355476; BORGES, Anne Kelly de Souza Machado.
Resumo:
Portland cement is the name used worldwide for the input used in construction,
having its properties of start and endding of casting, fineness, strength, durability,
etc., defined by its chemical composition, attributing to it some specific uses. The
chemical characterization of a material is important due to the need of adequate
selection based on the performance of the studied system, being able to describe
aspects of composition, structure, aiming mainly to estimate the performance
during the useful life of the material, minimizing the possibility of degradation and
undesirable faults during the use of the product. In this study four types of
Portland cements were collected in the ABNT 200 sieve (0.074 mm aperture) and
submitted to the tests through thermody- gravimetric and thermogravimetric
analysis and x-ray fluorescence, identifying the behavior of Portland cements
against temperature rise and it was determined that the major chemical
composition of all samples is Calcium Oxide (CaO), as well as the other
constituents. It was observed that the results obtained corroborate with the
technical norms and existing studies, indicating indicating that mass losses occur
in fixed temperature ranges and that it is very important the detailed
characterization of the cement, since it allows to recognize the behavior of
elements and components produced with this material.
