Determinación de patologías estructurales y comportamiento de vigas a esfuerzos de flexión reforzadas con fibra de carbono.
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Fecha
2018
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Universidad de Guayaquil. Facultad de Ciencias Matemáticas y Físicas. Carrera de Ingeniería Civil.
Resumen
La gran mayoría de las edificaciones están construidas con hormigón armado, por tal razón es necesario investigar los fenómenos que atacan a los elementos estructurales que se conocen como patologías. Por tal motivo el presente trabajo de investigación tiene como objetivo determinar las patologías estructurales y analizar el comportamiento de vigas a esfuerzos de flexión reforzadas con fibra de carbono. La metodología utilizada fue la recopilación de información sobre los tipos de patologías que existen, en qué etapa de la obra se presentan y como prevenir, conocer que técnica de estudios se debe emplear para resolver el problema. Para determinar el incremento de resistencia a la flexión se ensayarán 7 vigas de 100 cm de longitud con una sección de 15x15cm y observar su comportamiento en varias condiciones, las vigas de hormigón elaboradas con reforzamiento y sin reforzamiento de fibra de carbono se analizarán a los 7 y 21 días que adquiera su resistencia total con la ayuda del aditivo MEGAMIX 350.Después de realizar los ensayos de laboratorio podemos comprobar que las vigas de hormigón simple tienen un comportamiento frágil ya que el hormigón no trabaja a flexión mientras que las vigas de hormigón simple reforzada con fibra de carbono tuvieron un gran porcentaje de resistencia a flexión. Por otro lado, las vigas de hormigón armado con y sin fibra no se observó pandeo o fisuramientos en ninguna de las vigas ensayadas llegando alcanzar aproximadamente los 50 kN de fuerza y alcanzando el máximo de la máquina por eso suspendieron el ensayo en la empresa hormigones hércules s.a.
The great majority of the buildings are built with reinforced concrete, for this reason it is necessary to investigate the phenomena that attack the structural elements that are known as pathologies. For this reason the present research work aims to determine the structural pathologies and analyze the behavior of beams to bending efforts reinforced with carbon fiber. The methodology used was the compilation of information about the types of pathologies that exist, at what stage of the work they are presented and how to prevent, to know which study technique should be used to solve the problem. To determine the increase in flexural strength, 7 beams of 100 cm in length with a section of 15x15cm will be tested and their behavior will be observed in various conditions. Concrete beams made with reinforcement and without carbon fiber reinforcement will be analyzed at 7 o'clock. and 21 days that it acquires its total resistance with the help of the additive MEGAMIX 350. After carrying out the laboratory tests we can verify that the simple concrete beams have a fragile behavior since the concrete does not work with bending while the simple concrete beams reinforced with carbon fiber had a high percentage of flexural strength. On the other hand, the reinforced concrete beams with and without fiber were not observed buckling or cracking in any of the tested beams reaching approximately 50 kN of force and reaching the maximum of the machine therefore suspended the test in the company Hercules concretes S.A.
The great majority of the buildings are built with reinforced concrete, for this reason it is necessary to investigate the phenomena that attack the structural elements that are known as pathologies. For this reason the present research work aims to determine the structural pathologies and analyze the behavior of beams to bending efforts reinforced with carbon fiber. The methodology used was the compilation of information about the types of pathologies that exist, at what stage of the work they are presented and how to prevent, to know which study technique should be used to solve the problem. To determine the increase in flexural strength, 7 beams of 100 cm in length with a section of 15x15cm will be tested and their behavior will be observed in various conditions. Concrete beams made with reinforcement and without carbon fiber reinforcement will be analyzed at 7 o'clock. and 21 days that it acquires its total resistance with the help of the additive MEGAMIX 350. After carrying out the laboratory tests we can verify that the simple concrete beams have a fragile behavior since the concrete does not work with bending while the simple concrete beams reinforced with carbon fiber had a high percentage of flexural strength. On the other hand, the reinforced concrete beams with and without fiber were not observed buckling or cracking in any of the tested beams reaching approximately 50 kN of force and reaching the maximum of the machine therefore suspended the test in the company Hercules concretes S.A.
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PATOLOGÍAS ESTRUCTURALES, COMPORTAMIENTO A FLEXIÓN, FIBRA DE CARBONO, FLEXIÓN DE VIGAS