Estudio del módulo de elasticidad estático del hormigón en base a su resistencia a la compresión fabricado con materiales de las minas: la playa, ubicada en el cantón Salcedo provincia de Cotopaxi y Salvador, ubicada en el cantón Ambato provincia de Tungurahua

Abstract

This experimental work was carried out according to the current regulations set in place. The first step was developing a visual inspection and followed by taking samples in accordance with specifications found in NTE INEN 695. First and foremost it was taken from two of the mines that contribute material to Ambato city, subsequently, the reduction to trial size as indicated by NTE INEN 2566; then it started the characterization tests of the aggregates in order to know its properties and its possible behavior in structural concrete, abiding by what was provided in NTE INEN 872. Additionally, the real density of the cement was determined based on what was stated in NTE INEN 156. Finally, the design of mixtures, using the maximum density method, for compressive strengths at 28 days of age of 21 and 28 Mpa. Once the final dosages were obtained, cylindrical specimens were made, fulfilling the process in accordance with NTE INEN 3124. While simultaneously taking concrete tests in fresh conditions as well as sampling; according to NTE INEN 1763, slump determination in accordance with NTE INEN 1578, and density, performance, air content, following the provisions of NTE INEN 1579. The respective tests were also carried out on the concrete in the hardened condition, obtaining its compressive strengths for the ages of 7, 14, 21 and 28 days, according with what was specified in NTE INEN 1573. In conclusion, the experimental static modulus of elasticity were determined and the process is illustrated in ASTM C469. In addition, the theoretical was also determined using the equations proposed in ACI 318, for later comparison and analysis.