Measurement of fracture properties of concrete at high strain rates

Rey de Pedraza Ruiz, Víctor and Cendón Franco, David Ángel and Sanchez Galvez, Vicente and Gálvez Díaz-Rubio, Francisco (2016). Measurement of fracture properties of concrete at high strain rates. "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences", v. 375 (n. 2085); pp. 1-13. ISSN 1364-503X. https://doi.org/10.1098/rsta.2016.0174.

Description

Title: Measurement of fracture properties of concrete at high strain rates
Author/s:
  • Rey de Pedraza Ruiz, Víctor
  • Cendón Franco, David Ángel
  • Sanchez Galvez, Vicente
  • Gálvez Díaz-Rubio, Francisco
Item Type: Article
Título de Revista/Publicación: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Date: December 2016
ISSN: 1364-503X
Volume: 375
Subjects:
Freetext Keywords: Impact; DIF; concrete; high strain rate; spalling; Hopkinson bar
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

An analysis of the spalling technique of concrete bars using the modified Hopkinson bar was carried out. A new experimental configuration is proposed adding some variations to previous works. An increased length for concrete specimens was chosen and finiteelement analysis was used for designing a conic projectile to obtain a suitable triangular impulse wave. The aim of this initial work is to establish an experimental framework which allows a simple and direct analysis of concrete subjected to high strain rates. The efforts and configuration of these primary tests, as well as the selected geometry and dimensions for the different elements, have been focused to achieve a simple way of identifying the fracture position and so the tensile strength of tested specimens. This dynamic tensile strength can be easily compared with previous values published in literature giving an idea of the accuracy of the method and technique proposed and the possibility to extend it in a near future to obtain othermechanical properties such as the fracture energy. The tests were instrumented with strain gauges, accelerometers and high-speed camera in order to validate the results by different ways. Results of the dynamic tensile strength of the tested concrete are presented. This article is part of the themed issue ‘Experimental testing and modelling of brittle materials at high strain-rates’.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA2014-54916-RUnspecifiedDavid Ángel Cendón FrancoAnálisis numérico y experimental del comportamiento del hormigón sometido a explosiones con y sin protecciones

More information

Item ID: 45832
DC Identifier: http://oa.upm.es/45832/
OAI Identifier: oai:oa.upm.es:45832
DOI: 10.1098/rsta.2016.0174
Official URL: http://rsta.royalsocietypublishing.org/content/375/2085/20160174
Deposited by: Memoria Investigacion
Deposited on: 17 May 2017 12:54
Last Modified: 01 Jan 2019 23:30
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