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Reducing Crack Risk in Industrial Concrete Floors
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-1526-9331
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. Stockholm Off Ramboll, Sweden.
2014 (English)In: ACI Materials Journal, ISSN 0889-325X, E-ISSN 1944-737X, Vol. 111, no 6, 681-689 p.Article in journal (Refereed) Published
Abstract [en]

Cracking and curling are two important problems in industrial concrete floors. In many practical cases, it is easier to design the concrete floor slab for mechanical loads than for shrinkage stresses. This paper proposes a simple equation that mirrors the major factors influencing the crack risk in concrete floor slabs. By using this equation, the industrial floor designer or contractor can make a proper material selection that leads to a substantially reduced crack risk. Tests on strength, free shrinkage, restrained shrinkage, and flexural creep support this hypothesis. Furthermore, the use of shrinkage-reducing admixtures (SRAs) seems to not only reduce the free shrinkage but also maintains the beneficial condition of substantial creep that leads to shrinkage stress reduction.

Place, publisher, year, edition, pages
2014. Vol. 111, no 6, 681-689 p.
Keyword [en]
crack risk, creep, industrial concrete floors, material tests, restrained shrinkage, shrinkage
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-158412DOI: 10.14359/51686833ISI: 000345552400009Scopus ID: 2-s2.0-84916607119OAI: oai:DiVA.org:kth-158412DiVA: diva2:776451
Note

QC 20150107

Available from: 2015-01-07 Created: 2015-01-07 Last updated: 2017-12-05Bibliographically approved

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Silfwerbrand, Johan L.

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