Non-Linear Numerical Models for Predicting the Bond Strength of Fibre-Reinforced Concrete at High Temperatures
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http://hdl.handle.net/10045/99858
Títol: | Non-Linear Numerical Models for Predicting the Bond Strength of Fibre-Reinforced Concrete at High Temperatures |
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Autors: | Varona Moya, Francisco de Borja | Villacampa, Yolanda | Navarro-González, Francisco J. | Bru, David | Baeza, F. Javier |
Grups d'investigació o GITE: | Grupo de Ensayo, Simulación y Modelización de Estructuras (GRESMES) | Modelización Matemática de Sistemas | Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Ingeniería Civil | Universidad de Alicante. Departamento de Matemática Aplicada |
Paraules clau: | Fibre-reinforced concrete | High temperature | Bond strength | Non-linear numerical models |
Àrees de coneixement: | Ingeniería de la Construcción | Matemática Aplicada | Mecánica de Medios Continuos y Teoría de Estructuras |
Data de publicació: | 2019 |
Editor: | WIT Press |
Citació bibliogràfica: | WIT Transactions on Engineering Sciences. 2019, 125: 195-206. doi:10.2495/CMEM190191 |
Resum: | The steel to concrete bond mechanism is critical to address the behaviour of reinforced concrete structural members. Although this mechanism can be compromised during a fire, it may be one of the least researched phenomena in concrete technology and is not addressed in the design codes and standards. In this work, we present a thorough review of the experimental data available on this topic, focusing on fibre-reinforced concrete. The data allow us to study the evolution of the bond strength as a function of three variables: the exposure temperature, the type of fibre and the volume fraction. A linear multiple regression is initially carried out, followed by a series of non-linear numerical models. These models are built using a methodology based on the finite element method combined with the formulation of the Galerkin method. The numerical models have been developed for different degrees of complexity. The error measurements obtained with the linear regression and the numerical models are compared in order to present a prediction model. The selected model is then validated for different values of the independent variables. This process supports the discussion of the influence that the independent variables have in the evolution of the bond strength between steel reinforcement and fibre-reinforced concretes exposed to high temperatures. |
Patrocinadors: | The authors want to acknowledge Generalitat Valenciana, which has made possible this piece of research through the grant GV/2018/015. |
URI: | http://hdl.handle.net/10045/99858 |
ISSN: | 1743-3533 |
DOI: | 10.2495/CMEM190191 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2019 WIT Press |
Revisió científica: | si |
Versió de l'editor: | https://doi.org/10.2495/CMEM190191 |
Apareix a la col·lecció: | INV - DMCIA - Artículos de Revistas INV - GRESMES - Artículos de Revistas INV - MMS - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2019_Varona_etal_WITTransEngSci.pdf | 338,06 kB | Adobe PDF | Obrir Vista prèvia | |
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