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Assessment of risk of thermal cracking in hardening concrete
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-3997-3083
1994 (English)In: Journal of Structural Engineering, ISSN 0733-9445, E-ISSN 1943-541X, Vol. 120, no 10, p. 2893-2912Article in journal (Refereed) Published
Abstract [en]

At the Luleå University of Technology, research has been performed on thermal stresses and thermal cracking in maturing concrete in the last decade. Laboratory tests have been carried out providing material data for calibration of a proposed theoretical model for thermal stress analysis in young concrete. The laboratory tests included creep tests, free thermal volume change tests and relaxation tests. In the theoretical model, the thermal properties and the transient mechanical properties of the young maturing concrete as well as the restraint within the concrete element are considered. The model has been implemented in a computer program permitting the analysis of different concreting scenarios of which some examples are shown. In the examples, influences of different measures against cracking as well as influences of changes in temperature conditions, restraint, and mechanical behavior of concrete are quantified. For some cases in the computational studies it may be concluded that, for control of early-age thermal stresses and cracking in a structure, it is highly inadequate to consider only the early-age distribution of the temperature field within the studied structures.

Place, publisher, year, edition, pages
1994. Vol. 120, no 10, p. 2893-2912
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-2841DOI: 10.1061/(ASCE)0733-9445(1994)120:10(2893)ISI: A1994PH60300006Scopus ID: 2-s2.0-0028518068Local ID: 08ed5200-6d9f-11db-83c6-000ea68e967bOAI: oai:DiVA.org:ltu-2841DiVA, id: diva2:975695
Note
Godkänd; 1994; 20061106 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Emborg, MatsBernander, Stig

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