Influence of time-dependent effects on the crack spacing in reinforced concrete beams
Author(s): |
Arnaud Castel
Raymond Ian Gilbert |
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Medium: | journal article |
Language(s): | English |
Published in: | Structural Concrete, September 2014, n. 3, v. 15 |
Page(s): | 373-379 |
DOI: | 10.1002/suco.201300065 |
Abstract: |
This paper aims to put into perspective the influence of long-term effects, such as concrete creep and shrinkage, on concrete cracking. Long-term experimental results obtained at the Centre for Infrastructure Engineering & Safety (CIES) are reported and compared to design estimates made using the fib Model Code for Concrete Structures 2010. The influence of factors such as stirrup spacing and concrete cover are discussed. Results show that time-dependent shrinkage-induced cracking can considerably modify the cracking patterns obtained in short-term tests. For crack control in real structures and for the development of models for inclusion in codes of practice, it is strongly recommended that account be taken of time-dependent effects. Limiting observations to those made in short-term tests may lead to erroneous conclusions that are simply not applicable for structures that are more than a few weeks old. |
Keywords: |
reinforced concrete fib Model Code 2010 shrinkage crack spacing sustained loading stirrup spacing
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Available from: | Refer to publisher |
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data sheet - Reference-ID
10070488 - Published on:
07/10/2014 - Last updated on:
02/02/2015