Reducing Crack Risk in Industrial Concrete Floors
2014 (English)In: ACI Materials Journal, ISSN 0889-325X, Vol. 111, no 6, 681-689 p.Article in journal (Refereed) Published
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.
crack risk, creep, industrial concrete floors, material tests, restrained shrinkage, shrinkage
IdentifiersURN: urn:nbn:se:kth:diva-158412DOI: 10.14359/51686833ISI: 000345552400009ScopusID: 2-s2.0-84916607119OAI: oai:DiVA.org:kth-158412DiVA: diva2:776451
QC 201501072015-01-072015-01-072015-01-07Bibliographically approved