Empleo de fibras de vidrio para eliminar retracciones plásticas
Cargando...
Archivos
Fecha
2008
Autores
Profesor/a Guía
Facultad/escuela
Idioma
es
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
El tipo más común de fisuras intrínsecas aparece en el estado plástico y éste es
ocasionado por la retracción al ocurrir el secado (Retracción Plástica). Por lo general las
fisuras debidas a la retracción plástica cruzan toda una losa o muro revestido de
mortero y forman planos débiles que reducen permanentemente la integridad de la
estructura antes de que el hormigón tenga la oportunidad de obtener la resistencia de
diseño.
En esta investigación se presenta un estudio respecto a la efectividad que tiene la fibra
de vidrio en materia de eliminar las retracciones plásticas en morteros y hormigones. El
estudio se desarrolla aplicando distintas dosificaciones de fibras de vidrio y además
comparándolas con fibras de polipropileno y nylon, que fueron estudiadas anteriormente
por memoristas interesados en el tema. Se midió en laboratorio el efecto que causan
condiciones extremas del (ambiente, ya sea, altas temperaturas, viento y humedad
relativa. Estas mediciones se realizan luego del paso de probetas personalizadas y
briquetas RILEM, por un túnel artesanal que asimila las condiciones ambientales
extremas.
Los resultados muestran la disminución de las retracciones plásticas o fisuras a
temprana edad en hormigón o mortero reforzado con fibra de vidrio, en comparación
con un hormigón patrón sin fibra. Donde además se concluye que las fibras de
polipropileno y nylon tiene un mejor funcionamiento a fin de eliminar retracciones
plásticas.
The most common type of intrinsic cracks appears in the plastic state and it is caused by the retraction when the dried ocurrs (shrinkage plastic). Generally the fissures due to the shrinkage plastic cross the whole slab or wall redressed in mortar and form weak planes that reduce permanently the integrity of the structure before the concrete has the opportunity to obtain the resistance of designo This research presents a study related to the efficiency that the glass fiber has as eliminating the shrinksage plastics in mortars and concretes. The study develops applying different dosages of glass fibers and in addition comparing them with fibers of polipropileno and nylon, which they were studied previously for memoristas interested in the topic. There measured up in laboratory the effect that extreme conditions of the environment cause, some of them, high temperatures, wind and relative humidity. These measurements realize after the step of personalized manometers and briquettes rilem, for a handcrafted tunnel that it(he,she) assimilates the environmental extreme conditions. The results show the decrease of the plastic retractions or fissures to early age in concrete or mortar reinforced with glass fiber, in comparison with a concrete boss without fiber. Where in addition concludes that fibers of polipropileno and nylon have a better functioning in order to eliminate shrinkage plastics.
The most common type of intrinsic cracks appears in the plastic state and it is caused by the retraction when the dried ocurrs (shrinkage plastic). Generally the fissures due to the shrinkage plastic cross the whole slab or wall redressed in mortar and form weak planes that reduce permanently the integrity of the structure before the concrete has the opportunity to obtain the resistance of designo This research presents a study related to the efficiency that the glass fiber has as eliminating the shrinksage plastics in mortars and concretes. The study develops applying different dosages of glass fibers and in addition comparing them with fibers of polipropileno and nylon, which they were studied previously for memoristas interested in the topic. There measured up in laboratory the effect that extreme conditions of the environment cause, some of them, high temperatures, wind and relative humidity. These measurements realize after the step of personalized manometers and briquettes rilem, for a handcrafted tunnel that it(he,she) assimilates the environmental extreme conditions. The results show the decrease of the plastic retractions or fissures to early age in concrete or mortar reinforced with glass fiber, in comparison with a concrete boss without fiber. Where in addition concludes that fibers of polipropileno and nylon have a better functioning in order to eliminate shrinkage plastics.
Notas
Tesis (Ingeniero Constructor)
Palabras clave
Fibras de Vidrio.