Back-calculation procedure for cyclic flexural fracture tests in fiber reinforced concrete

Barzin Mobasher, A. Bonakdar, M. Bakhshi

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

Abstract

Crack resistance of cement-based materials under flexural stresses was studied experimentally in order to back-calculate the tensile properties. Monotonic and cyclic tests were performed on plain and fiber-reinforced concrete materials. A methodology based on the R-Curve approach is proposed that implements the measurement of an effective crack length by the correlation of apparent compliance of specimens through loading and unloading cycles. Closed-loop threepoint bending tests were conducted on notched beam specimens with crack mouth opening displacement (CMOD) as the controlling signal. The tests and the associated analyses were applied to several cases to evaluate the effects of curing time (strength development) as well as fiber-reinforcement (using AR-glass fibers) on the fracture behavior of concrete. The results showed that the fracture-based back-calculation method is relatively similar and comparable to predicted tensile stress-strain responses of other well-known methods.

Original languageEnglish (US)
Title of host publicationAmerican Concrete Institute, ACI Special Publication
PublisherAmerican Concrete Institute
Pages71-92
Number of pages22
Volume2015-January
EditionSP 300
StatePublished - 2015
EventFracture Mechanics Applications in Concrete at the ACI Spring 2012 Convention - Dallas, United States
Duration: Mar 18 2012Mar 22 2012

Other

OtherFracture Mechanics Applications in Concrete at the ACI Spring 2012 Convention
CountryUnited States
CityDallas
Period3/18/123/22/12

Fingerprint

Reinforced concrete
Cracks
Fibers
Bending tests
Fiber reinforced materials
Unloading
Tensile properties
Tensile stress
Glass fibers
Curing
Cements
Concretes
Compliance
fiberglass

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

Mobasher, B., Bonakdar, A., & Bakhshi, M. (2015). Back-calculation procedure for cyclic flexural fracture tests in fiber reinforced concrete. In American Concrete Institute, ACI Special Publication (SP 300 ed., Vol. 2015-January, pp. 71-92). American Concrete Institute.

Back-calculation procedure for cyclic flexural fracture tests in fiber reinforced concrete. / Mobasher, Barzin; Bonakdar, A.; Bakhshi, M.

American Concrete Institute, ACI Special Publication. Vol. 2015-January SP 300. ed. American Concrete Institute, 2015. p. 71-92.

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

Mobasher, B, Bonakdar, A & Bakhshi, M 2015, Back-calculation procedure for cyclic flexural fracture tests in fiber reinforced concrete. in American Concrete Institute, ACI Special Publication. SP 300 edn, vol. 2015-January, American Concrete Institute, pp. 71-92, Fracture Mechanics Applications in Concrete at the ACI Spring 2012 Convention, Dallas, United States, 3/18/12.
Mobasher B, Bonakdar A, Bakhshi M. Back-calculation procedure for cyclic flexural fracture tests in fiber reinforced concrete. In American Concrete Institute, ACI Special Publication. SP 300 ed. Vol. 2015-January. American Concrete Institute. 2015. p. 71-92
Mobasher, Barzin ; Bonakdar, A. ; Bakhshi, M. / Back-calculation procedure for cyclic flexural fracture tests in fiber reinforced concrete. American Concrete Institute, ACI Special Publication. Vol. 2015-January SP 300. ed. American Concrete Institute, 2015. pp. 71-92
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