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Modelling of temperature and shrinkage induced cracking risks in young concrete
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
2009 (English)In: Proceedings of abstracts: Comportement et Evaluation des Ouvrages Spéciaux. Fissuration Retrait ( International workshop on Control of cracking in R.C. structures: a major step towards serviceability, 2009, 31- p.Conference paper, Meeting abstract (Other academic)
Abstract [en]

Control of thermal and shrinkage cracking in hardening concrete is of great importance to ensure desired service life and function of concrete constructions. Making reliable stress estimations, and thereby conclusions about cracking risks caused by temperature movements and shrinkage involves advanced modelling of material properties and structural restraint. Cracking of concrete during the hardening phase must be avoided in order to minimize the risk of durability problems in the future, such as corrosion risk of the reinforcement, water tightness and damages according to frost. Estimation of the risk of early age cracking requires knowledge of the combined effects from temperature development and mechanical behaviour during the hydration. Applications of the present model using the computer program ConTeSt Pro demonstrates that it can be used to decide what measures to be taken to minimize the risk of cracking during the hardening phase for concrete structures. One example of estimated temperatures and cracking risks is shown in Figure 1.Figure 1 Estimated temperatures and cracking risks for the walls of the concrete arch of the Svinesund bridge between Sweden and Norway. The arch was built by the technique of climbing form work

Place, publisher, year, edition, pages
2009. 31- p.
Research subject
Structural Engineering
URN: urn:nbn:se:ltu:diva-29828Local ID: 37066190-e989-11de-bae5-000ea68e967bOAI: diva2:1003054
COMPORTEMENT ET EVALUATION DES OUVRAGES SPECIAUX vis-à-vis de la fissuration et du retrait ( International Workshop Control of cracking in R.C. Structures: a major step towards serviceability : 10/12/2009 - 10/12/2009
Godkänd; 2009; 20091215 (jej)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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Jonasson, Jan-ErikElfgren, LennartEmborg, Mats
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