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Ponencias en congresos:
Analysis of interfacial interaction in UHPFRC-strengthened reinforced concrete beams
Año:2019
Áreas de investigación
  • Ingenieria civil
Datos
Descripción
The behaviour and failure mode of reinforced concrete elements strengthened with a thin tensile layer of ultra-high performance fiber-reinforced concrete (UHPFRC) is governed by the interface interaction between the UHPFRC and conventional concrete. In order to analyze the relative displacements at the interface and its influence on the crack pattern evolution and monolithic response, digital image correlation (DIC) has been used in this contribution. With the help of DIC, the distinct stages of the behaviour of UHPFRC-strengthened beams have been correlated with the crack formation and development. Special attention has been paid to the progressive debonding due to the strain incompatibility between UHPFRC and conventional concrete when cracks develop. It is shown that the utilization of the capacity of the UHPFRC can be achieved from a certain thickness of the strengthening layer for shear-critical elements, thereby providing a gain of shear strength and ductility. In contrast, a thinner UHPFRC layer has been more beneficial for flexure-critical elements.
Internacional
Si
Nombre congreso
IOP Conference Series: Materials Science and Engineering
Tipo de participación
960
Lugar del congreso
Praga, República Checa
Revisores
Si
ISBN o ISSN
1757-899X
DOI
Fecha inicio congreso
17/09/2019
Fecha fin congreso
20/09/2019
Desde la página
1
Hasta la página
12
Título de las actas
IOP Conference Series: Materials Science and Engineering
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Carlos Zanuy Sanchez (UPM)
  • Autor: Gonzalo Sanz-Diez de Ulzurrun Casals (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Ingeniería Estructural
  • Departamento: Mecánica de Medios Continuos y Teoría de Estructuras
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