Browsing by Author "Paredes Arpi, Sandra Fabiola"

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    Desarrollo de un empaste para interiores y exteriores para la empresa Hormicreto Cía. Ltda.
    (2017) Paredes Arpi, Sandra Fabiola; Peñaherrera Palacios, Sandra Catalina
    The following work has as main objective the development of a formulation of a single component to exteriors and a filling bicomponent to interiors, using calcium carbonate as the main raw material. Calcium Carbonates to be tested in the formulation of the filling were provided by the company Cía. Ltda. Hormicreto. and in them one of the suppliers of raw materials made the absorption of oil as first test method to determine their fitness for this use. This same provider was that provided some formulas of departure for the development of the monocomponent filling. Characterization of raw materials was performed in the laboratory of the company Cía. Ltda Hormicreto, were performed chemical analyses using Fluorescence X-ray (FRX) and determination of the color by the chromatic method CIEL * a * b *. The development of formulas for optimal and split used test method error, evaluating the performance of the same physical and mechanical tests: pH, sandability, hardening, permeability of the surface, performance, setting and air content, they were compared with the behavior of the best products from the competition. The procedures used are INEN 159:2010, INEN 195:2009 standars and standar INEN 2502. Degree work concludes with the application in the field of the formulations with the best results in the stage of experimentation with both fillings.