Memorias de investigación
Ponencias en congresos:
Comparison of different models of calculation to evaluate the resistance to compression of the concrete confined with carbon fiber tissues
Año:2019
Áreas de investigación
  • Ingeniería civil y arquitectura
Datos
Descripción
The resistance of concrete to compression can be increased very importantly by its confinement. The confinement of the concrete by means of the external gluing of high resistance fiber fabrics is a technique that has been known for decades and is increasingly used in reinforcement works of structural elements subjected to compression. Carbon fiber fabrics are commonly used, due to their high strength and high modulus of elasticity. The break of the elements occurs when the tensile fiber fails. There are different models to predict the compressive strength of concrete confined with this type of fabric. In America, the model proposed by the ACI is usually used, while in Europe, the one proposed by the FIB is used. In both models, the strength of the confined concrete is obtained from the geometry and strength of the unconfined concrete and the geometric and mechanical characteristics of the fabric that confines the concrete. However, the expressions used are conceptually different. First, for ACI the increased strength of the confined concrete is independent of the strength of the unconfined concrete. Secondly, ACI decreases the maximum deformation at which the fabric can work (and therefore its resistance) to a value close to half of the ultimate deformation of the fabric tested to pure traction, as a result of multiplying by the coefficients ?f y ke, while FIB does not specify this point clearly.
Internacional
Si
Nombre congreso
IV International Conference on Technological Innovation in Builiding. CITE 2019
Tipo de participación
960
Lugar del congreso
Universidad Politécnica de Madrid
Revisores
Si
ISBN o ISSN
978-84-16397-88-4
DOI
Fecha inicio congreso
06/03/2019
Fecha fin congreso
08/03/2019
Desde la página
262
Hasta la página
263
Título de las actas
Libro de Actas CITE 2019
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Patología de estructuras, protecciones colectivas y medios auxiliares de edificación.
  • Departamento: Tecnología de la Edificación
  • Departamento: Construcciones Arquitectónicas y su Control