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副教授

博士生导师

硕士生导师

性别:男

毕业院校:法国克莱蒙费朗二大

学位:博士

所在单位:土木工程系

学科:结构工程

联系方式:0411-84706285

电子邮箱:bohanxu@dlut.edu.cn

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

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论文类型:期刊论文

发表时间:2014-08-01

发表刊物:COMPTES RENDUS MECANIQUE

收录刊物:SCIE

卷号:342

期号:8

页面范围:490-500

ISSN号:1631-0721

关键字:Fracture mechanics; Concrete; Fracture toughness; T-stress

摘要: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.