Effect of <i>T</i>-stress on the mode-I fracture toughness of concrete

Yan-hua Zhao; Bo-han Xu

doi:10.1016/j.crme.2014.03.001

Effect of T-stress on the mode-I fracture toughness of concrete

Yan-hua Zhao ¹ ; Bo-han Xu ¹

¹ State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, PR China

Comptes Rendus. Mécanique, Volume 342 (2014) no. 8, pp. 490-500.

Abstract

T-stress expressions are provided for three-point bending (TPB) beams and compact tension (CT) specimens and then its influence on mode I fracture toughness of concrete is investigated. The study shows that T-stress is dependent on the specimen's geometry and the material's property as well, and for TPB and CT specimens of regular size, T-stress is so small that its consequences can be neglected. The study also indicates that concrete specimen size should be carefully chosen to make sure the existence of K-dominance ahead of the crack tip, thus fracture toughness extracted from these specimen configurations can be reliable.

Received: 2013-12-10
Accepted: 2014-03-18
Published online: 2014-06-17

DOI: 10.1016/j.crme.2014.03.001

Mots-clés : Fracture mechanics, Concrete, Fracture toughness, T-stress

Author's affiliations:

Yan-hua Zhao ¹; Bo-han Xu ¹

¹ State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, PR China

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     author = {Yan-hua Zhao and Bo-han Xu},
     title = {Effect of {\protect\emph{T}-stress} on the {mode-I} fracture toughness of concrete},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {490--500},
     publisher = {Elsevier},
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     number = {8},
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     doi = {10.1016/j.crme.2014.03.001},
     language = {en},
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Yan-hua Zhao; Bo-han Xu. Effect of T-stress on the mode-I fracture toughness of concrete. Comptes Rendus. Mécanique, Volume 342 (2014) no. 8, pp. 490-500. doi : 10.1016/j.crme.2014.03.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2014.03.001/

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