Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Structural Integrity and Durability of Structures Vol. 13, No. 50 (2019)

Experimental Research on Fracture Behavior of Concrete after High Temperature

Author and affiliation details
  • Peng Qiu Corresponding author Jiangsu City Vocational College Nantong Campus, China qiupengrt@163.com
DOI
10.3221/IGF-ESIS.50.25
Pages
300-309
Published
Published inVol. 13, No. 50 (2019)Go to the issue

Abstract

High-strength concrete has been widely used in various complex buildings. The fracture and mechanical properties of high-strength concrete after fire have great research value. Based on the double K fracture model, the fracture properties of C50 and C70 strength grade concrete after being processed by high temperature of 25 °C ~800 °C were studied by three-point bending beam test. The changes of fracture toughness Kic and fracture energy at different temperatures after being processed by high temperature were analyzed. The results showed that the initial crack toughness and instability toughness of the two kinds of concrete decreased with the increase of temperature; when the strength grade of concrete was C50, the fracture energy first increased and then decreased with the development of temperature; when the strength grade of concrete was C70, the fracture energy first decreased rapidly and then decreased slowly with the development of temperature. 

Keywords

Article history

  1. ReceivedUntil the next stage: 27 days
  2. Revision requestedUntil the next stage: 80 days
  3. RevisedUntil the next stage: 28 days
  4. AcceptedUntil the next stage: 4 days
  5. Published

How to cite

APA

Qiu, P. (2019). Experimental Research on Fracture Behavior of Concrete after High Temperature. Fracture and Structural Integrity, 13(50), 300–309. https://doi.org/10.3221/IGF-ESIS.50.25

IEEE

P. Qiu, “Experimental Research on Fracture Behavior of Concrete after High Temperature,” Fracture and Structural Integrity, vol. 13, no. 50, pp. 300–309, 2019, doi: 10.3221/IGF-ESIS.50.25.

MLA

Qiu, Peng. “Experimental Research on Fracture Behavior of Concrete after High Temperature.” Fracture and Structural Integrity, vol. 13, no. 50, 2019, pp. 300–309. https://doi.org/10.3221/IGF-ESIS.50.25.

Chicago

Qiu, Peng. 2019. “Experimental Research on Fracture Behavior of Concrete after High Temperature.” Fracture and Structural Integrity 13 (50): 300–309. https://doi.org/10.3221/IGF-ESIS.50.25.

Harvard

Qiu, P. (2019) ‘Experimental Research on Fracture Behavior of Concrete after High Temperature’, Fracture and Structural Integrity, 13(50), pp. 300–309. doi: 10.3221/IGF-ESIS.50.25.

Vancouver

Qiu P. Experimental Research on Fracture Behavior of Concrete after High Temperature. Fracture and Structural Integrity. 2019;13(50):300-309. doi:10.3221/IGF-ESIS.50.25

BibTeX

@article{qiu2019, author = {Qiu, Peng}, title = {Experimental Research on Fracture Behavior of Concrete after High Temperature}, journal = {Fracture and Structural Integrity}, year = {2019}, volume = {13}, number = {50}, pages = {300--309}, doi = {10.3221/IGF-ESIS.50.25}, url = {https://doi.org/10.3221/IGF-ESIS.50.25}, issn = {1971-8993} }

RIS

TY - JOUR AU - Qiu, Peng TI - Experimental Research on Fracture Behavior of Concrete after High Temperature JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2019 DA - 2019/08/25 VL - 13 IS - 50 SP - 300 EP - 309 DO - 10.3221/IGF-ESIS.50.25 UR - https://doi.org/10.3221/IGF-ESIS.50.25 SN - 1971-8993 ER -

Licence

Copyright © 2019 Peng Qiu.

Copyright 
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