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Kim, Jae Hong
Research Group for Concrete Structures and Materials
Research Interests
  • Mechanics of Concrete, Rheology, Structural Analysis, Construction Performance

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Effect of powder materials on the rheology and formwork pressure of self-consolidating concrete

Cited 5 times inthomson ciCited 6 times inthomson ci
Title
Effect of powder materials on the rheology and formwork pressure of self-consolidating concrete
Author
Kim, Jae HongNoemi, NagyShah, Surendra P.
Keywords
Filling abilities; Flowability; Formwork; Formwork pressure; Labor costs; Lateral pressures; Limestone filler; Powder material; SCC; Self-consolidating concrete; Workability retention
Issue Date
201207
Publisher
ELSEVIER SCI LTD
Citation
CEMENT & CONCRETE COMPOSITES, v.34, no.6, pp.746 - 753
Abstract
Self-consolidating concrete (SCC) is a recently developed, innovative construction material. With use of SCC no additional compacting is necessary due to its high filling ability; as a result, the labor cost of compacting is economical. However, SCC may require stronger formwork that can resist the higher lateral pressure induced as compared to that for ordinary concrete. This study shows the effects of limestone filler or fly ash replacement on the formwork pressure and workability retention of a SCC mixture. Portland cement has been replaced with each of the powders in order to enhance its flowability and stability. It is observed that the powder replacement also increases the formwork pressure and decreases the workability retention. The effect of powder replacement on the formwork pressure is evaluated with a proposed two-function model, and discussed in comparison with the rheology of paste.
URI
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DOI
http://dx.doi.org/10.1016/j.cemconcomp.2012.02.016
ISSN
0958-9465
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