Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-08-01

Journal: COMPTES RENDUS MECANIQUE

Included Journals: SCIE

Volume: 342

Issue: 8

Page Number: 490-500

ISSN: 1631-0721

Key Words: Fracture mechanics; Concrete; Fracture toughness; T-stress

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. (C) 2014 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.