Evaluación mecánica de concreto y de corrosión en mortero con partÃculas de neumático reciclado
Abstract
RESUMEN
Se estudió la factibilidad del uso de partÃculas de neumático reciclado en concreto y morteros. Para evaluar las propiedades mecánicas del concreto endurecido se realizaron pruebas de densidad, resistencia a la compresión y determinación del módulo de elasticidad. Además se determinó la trabajabilidad del concreto en estado fresco mediante la prueba de revenimiento Las muestras se fabricaron con la sustitución de un 5%, 7.5% y 10 % del volumen de la arena por partÃculas de neumático reciclado. Se determinó mediante la técnica de potencial de corrosión el estado que guardaba en acero revisando de esta manera la probabilidad de corrosión. Para el estudio de la velocidad de corrosión se utilizó la técnica electroquÃmica de resistencia a la polarización lineal (RPL) en morteros fabricados bajo las mismas condiciones y proporciones que en los concretos. Los resultados mostraron que una mezcla con 7.5% de partÃculas de neumático reciclado puede ser utilizada en estructuras de resistencia moderada, ligera y ubicadas en ambientes con cloruros.
Palabras clave: Concreto; mortero; neumático reciclado; velocidad de corrosión; Propiedades mecánicas.
ABSTRACT
The feasibility of using scrap tire particles in the elaboration of concrete and mortar was investigated. To assess the mechanical properties of hardened concrete, tests evaluating of its density, modulus elasticity and compression strength were undertaken. To determine the workability of freshly made concrete, a slump test was also performed. Tests in which 5, 7.5 and 10% of sand were substituted by recycled tire particles were made. The likelihood of corrosion on the steel is determined, using the technique of corrosion potential. To test the velocity of corrosion was used the linear polarization resistance method (LPR method) was utilized under the same conditions as well as fabrication of concrete. It was observed that using 7.5% of recycled tire particles offers satisfactory results in structures of moderate strength and lighter weight located in environments with chlorides.
Keywords: Concrete; mortar; recycled tire; corrosion rate; mechanical properties.
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References
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