Cracking in walls with combined base and end restraint
File(s)
Author(s)
Micallef, M
Vollum, RL
Izzuddin, BA
Type
Journal Article
Abstract
Restraint of early-age thermal and long-term shrinkage strain can cause cracking in reinforced concrete members. Eurocode 2 provides guidance on the design of crack control reinforcement in reinforced concrete elements with base (edge) and end restraint, but not combined base and end restraint, which commonly occurs. The paper describes an experimental programme, which was conducted to investigate early-age and long-term shrinkage cracking in reinforced concrete walls with combined base and end restraint. The main variables in the test programme were concrete cover and reinforcement ratio. Early-age cracking is simulated with non-linear finite-element analysis, which is shown to capture the observed behaviour adequately. Eurocode 2 gives reasonable estimates of long-term crack widths in the tested walls if edge restraint is assumed, but significantly overestimates crack widths if the worst case of end restraint is assumed.
Date Issued
2017-11-01
Date Acceptance
2017-04-05
Citation
Magazine of Concrete Research, 2017, 69 (22), pp.1170-1188
ISSN
0024-9831
Publisher
ICE Publishing
Start Page
1170
End Page
1188
Journal / Book Title
Magazine of Concrete Research
Volume
69
Issue
22
Copyright Statement
© ICE Publishing 2016, all rights reserved
Sponsor
Laing O'Rourke Plc
Identifier
https://www.icevirtuallibrary.com/doi/10.1680/jmacr.17.00026
Grant Number
N/A
Subjects
Science & Technology
Technology
Construction & Building Technology
Materials Science, Multidisciplinary
Materials Science
British standards & codes of practice
cracks & cracking
reinforcement
VOLUME CHANGE CRACKING
SHRINKAGE CRACKING
CONCRETE MEMBERS
EARLY-AGE
BEHAVIOR
CREEP
BEAMS
0905 Civil Engineering
1202 Building
Building & Construction
Publication Status
Published
Date Publish Online
2017-05-17