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Kim, Jae Hong
Research Group for Concrete Structures and Materials
Research Interests
  • Mechanics of Concrete, Rheology, Structural Analysis, Construction Performance
  • Rheological investigation for the flow of fresh concrete
  • Multiscale material characterization of suspension

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Effect of mineral admixtures on formwork pressure of self-consolidating concrete

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Title
Effect of mineral admixtures on formwork pressure of self-consolidating concrete
Author
Kim, Jae HongBeacraft, MarkShah, Surendra P.
Keywords
Attapulgite; Formwork pressure; Kaolin; SCC; Silica fume; Slump flow
Issue Date
2010-10
Publisher
ELSEVIER SCI LTD
Citation
CEMENT & CONCRETE COMPOSITES, v.32, no.9, pp.665 - 671
Abstract
Owing to enhanced filling ability, self-consolidating concrete offers accelerated casting and superior quality control during construction. However, its high fluidity and high placement rate increase the lateral pressure on the formwork, necessitating an extensive supporting system to retain fresh mixtures in a desired shape. Current recommendations of formwork design for self-consolidating concrete adopt the concept of hydrostatic pressure, even though the measured pressure could be less than the recommended level. This study shows that mineral admixtures such as processed clays can appreciably lessen the formwork lateral pressure. In addition, the correlation between the formwork pressure response and the loss of slump flow is derived, providing an approximate method to estimate the reduction in formwork pressure.
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DOI
10.1016/j.cemconcomp.2010.07.018
ISSN
0958-9465
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UEE_Journal Papers
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