Contents Menu

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
KJ00000156346.pdf
[fulltext] 694 KB
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.
Subjects
土木工学 ( Other)
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