Simulation of Mixed-Mode Fracture (I-II) on PFRC Specimens with Various Fibre Proportions Using an Embedded Cohesive Crack Model

Suárez Guerra, Fernando and Gálvez Ruiz, Jaime and Enfedaque Díaz, Alejandro and García Alberti, Marcos (2019). Simulation of Mixed-Mode Fracture (I-II) on PFRC Specimens with Various Fibre Proportions Using an Embedded Cohesive Crack Model. In: "10th International Conference Fibre Concrete 2019", September 17-20, 2019, Prague, Czech Republic. pp.. https://doi.org/10.1088/1757-899X/596/1/012007.

Description

Title: Simulation of Mixed-Mode Fracture (I-II) on PFRC Specimens with Various Fibre Proportions Using an Embedded Cohesive Crack Model
Author/s:
  • Suárez Guerra, Fernando
  • Gálvez Ruiz, Jaime
  • Enfedaque Díaz, Alejandro
  • García Alberti, Marcos
Item Type: Presentation at Congress or Conference (Other)
Event Title: 10th International Conference Fibre Concrete 2019
Event Dates: September 17-20, 2019
Event Location: Prague, Czech Republic
Title of Book: Proceedings of the 10th International Conference Fibre Concrete 2019
Título de Revista/Publicación: IOP Conference Series: Materials Science and Engineering (MSE)
Date: 2019
ISSN: 1757-899X
Volume: 596
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Construcción
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The study of fibre-reinforced concrete (FRC) has become of increasing interest in the last decades. Although it is not a new technology, it has experienced a remarkable progress with the appearance of some recommendations in the standards. More specifically, the use of polyolefin fibres has proved to increase the tensile strength of concrete without the problems usually found with steel fibres, especially those related to corrosion. This type of fibres have been studied in depth and its fracture behaviour has been successfully simulated in the past by means of an embedded crack model using a trilinear softening function. Nevertheless, these simulations have been always focused on cases where fracture took place under pure mode I conditions, namely using the classical three-point bending test on notched specimens. In this study, such embedded crack model is used to reproduce the fracture behaviour on notched specimens subjected to a modified three-point bending test that induces fracture under a combination of modes I and II. Three PFRC mixes are analysed, all of them with the same proportions of concrete components but different proportions of polyolefin fibres. The experimental and numerical diagrams properly agree and allow identifying how the increasing proportion of fibres can be reflected in the trilinear softening function that numerically drives the damage evolution.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA2016-78742-C2-2-RUnspecifiedUnspecifiedSeguridad y sostenibilidad asociadas en aplicaciones estructurales de materiales base cemento con alta ductilidad: del resultado de laboratorio al cálculo estructural

More information

Item ID: 64157
DC Identifier: https://oa.upm.es/64157/
OAI Identifier: oai:oa.upm.es:64157
DOI: 10.1088/1757-899X/596/1/012007
Official URL: https://iopscience.iop.org/article/10.1088/1757-899X/596/1/012007
Deposited by: Memoria Investigacion
Deposited on: 29 Sep 2020 14:02
Last Modified: 29 Sep 2020 14:07
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