An Experimental Study on the Fracture of Concrete in Flexure
Memoirs of the Faculty of Engineering, Yamaguchi University Volume 31 Issue 1
Page 155-162
published_at 1980
Title
コンクリートの曲げ破壊機構に関する研究
An Experimental Study on the Fracture of Concrete in Flexure
Creators
Yoshimoto Akira
Creators
Hasegawa Hiroshi
Source Identifiers
At the first step, the stress-strain relation of concrete in direct tension and in flexural tension were examined. The strain at the beginning of fracture in the former was about 10.6 to 12.2×(10)^<-5> and that in the latter was about 18.2 to 21.5×(10)^<-5>. These results show that the fracture of concrete beam does not start even if the extreme tensile fiber strain represents the strain at which the fracture in direct tension starts. It is assumed that the resistance of concrete beam to external force does not decrease since tensile stresses in inner fibers increase when the extreme fiber fails. Experimental results which prove this hypothesis are presented. The notable change of stress distribution occurred when the extreme tensile fiber strain of concrete beam was over the strain at which the fracture of concrete in direct tension began, but the neutral axis did not move at this time. The rise of the neutral axis began when the extreme tensile fiber strain came to about 18.2 to 21.5×(10)^<-5>, i.e. the strain at the beginning of fracture of concrete beam.
Languages
jpn
Resource Type
departmental bulletin paper
Publishers
山口大学工学部
Date Issued
1980
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools
工学部