Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/68862
Title: Critical crack tip opening displacement of different strength concrete
Authors: Wang, B
Zhang, XF
Dai, JG 
Xu, SL
Keywords: Critical crack tip opening displacement (CTODc)
Fiber Bragg grating (FBG) sensors
Three-point bending (TPB) tests
Wedge splitting (WS) tests
High strength
Concrete
Issue Date: 2011
Publisher: 0
Source: Journal of Central South University (English Edition) ( 中南大學學報. 英文版), 2011, v. 18, no. 5, p. 1693-1699 How to cite?
Journal: Journal of Central South University (English Edition) ( 中南大學學報. 英文版) 
Abstract: Critical crack tip opening displacement (CTODc) of concrete using experimental and analytical evaluation with seven different compressive strengths ranging from 30 up to 150 MPa was studied based on two types of fracture tests: three-point bending (TPB) and wedge splitting (WS). In the tests, the values of CTODc were experimentally recorded using a novel technique, in which fiber Bragg grating (FBG) sensors were used, and two traditional techniques, in which strain gauges and clip gauges were deployed. The values of CTODc of tested concrete were also predicted using two existing analytical formulae proposed by JENQ & SHAH and XU, respectively. It is found that the values of CTODc obtained by both experimental measurements and analytical formulae exhibit a negligible variation as the compressive strength of concrete increases, and the test geometry adopted has little impact on the value of CTODc. Regarding the experimental measurement of CTODc, the clip gauge method generally leads to a larger value of CTODc and shows a more significant scatter as compared with the other two methods, while the strain gauge method leads to a slightly lower CTODc as compared with the FBG sensor method. The analytical formula proposed by JENQ and SHAH is found to generally lead to an overestimation, while the analytical formula proposed by XU shows a good accuracy.
URI: http://hdl.handle.net/10397/68862
ISSN: 2095-2899
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

6
Last Week
0
Last month
Citations as of Jan 21, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.