Fracture toughness of high performance concrete subjected to elevated temperatures: the effects of heating temperatures and testing conditions (hot and cold)

Ben Zhang, Martin Cullen, Tony Kilpatrick

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, the fracture toughness KIC of HPC was determined by conducting three-point bending tests on eighty notched HPC beams of 500×100×100 mm at high temperatures up to 450ºC (hot) and in cooled-down states (cold). When the concrete beams exposed to high temperatures for 16 hours, both thermal and hygric equilibriums were achieved. KIC for the hot concrete sustained a monotonic decrease tendency with the increasing temperature, with a sudden drop at 105ºC. For the cold concrete, KIC sustained a two-stage decrease trend, dropping slowly with the heating temperature up to 150ºC and rapidly thereafter.

Original languageEnglish
Title of host publication2013 International Conference on Computational Technologies in Concrete Structures (CTCS13)
EditorsC-K Choi
Place of PublicationSouth Korea
PublisherTechno Press
Pages1-20
Number of pages20
Publication statusPublished - Sep 2013

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Keywords

  • concrete
  • fracture toughness

Cite this

Zhang, B., Cullen, M., & Kilpatrick, T. (2013). Fracture toughness of high performance concrete subjected to elevated temperatures: the effects of heating temperatures and testing conditions (hot and cold). In C-K. Choi (Ed.), 2013 International Conference on Computational Technologies in Concrete Structures (CTCS13) (pp. 1-20). Techno Press.