Método gráfico de dosificación de hormigones basado en resultados experimentales de materiales provenientes de Ia Provincia de Loja

Abstract

Today the design and provision of concrete mixtures are two of the fundamental aspects to specify the quality of a given concrete. This quality, expressed as a function of its final mechanical strength (although not the only characteristic), can be predicted using any of the many design methods that exist today. Among these, one of the most employed in our media is the procedure proposed by the American Concrete Institute (AO1) 211.1, which, without detracting from its indisputable value (since it is still considered one of the most complete) Their understanding, especially for the initiates and students of the method, markedly diminished their understanding, 01 their "step by step" description and their tabular way of presenting the help data for the design. This is compounded by the difficulties of many of the local materials which do not seem to conform to the requirements of the method and of little or no reflection on the data obtained from the final test mixture (if they meet or Not with the proposed initial requirements). We must also take into account the design properties of our cement materials (the IP cement used by us generates relationships other than the American materials, the resistance to compression for a given w / c ratio is somewhat lower). While it is true that the graphic design methodologies are not new, this research is necessary due to the characteristics of our construction materials. In order to give veracity and rigor to the experimentation, the procedures and specifications sketched out by the ASTM and the certifications of the AO1 have been properly employed, giving greater control to the test procedures and their subsequent verification and validation.