A pore water pressure diffusion model to predict formwork pressure exerted by freshly mixed concrete

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The formwork pressure exerted by freshly mixed concrete is one of the most important considerations in ensuring the safety of construction in the field. The formwork pressure also affects the quality of concrete structures, determining the final shape of concrete members. Previous studies on the form pressure mostly investigated the intrinsic material effect. For example, the use of self-consolidating concrete increases the maximum pressure on the formwork. The extrinsic factor of a formwork system itself has rarely been considered. In the mockup tests and theoretical evaluations, it is identified that the bleed water-out controlled by the formwork tightness is critical. A pore water pressure diffusion model consistently addresses the high form pressure exerted by self-consolidating concrete, showing little bleeding, or by normally vibrated concrete placed in a waterproofed formwork. (C) 2016 Elsevier Ltd. All rights reserved.
Publisher
ELSEVIER SCI LTD
Issue Date
2017-01
Language
English
Article Type
Article
Citation

CEMENT & CONCRETE COMPOSITES, v.75, pp.1 - 9

ISSN
0958-9465
DOI
10.1016/j.cemconcomp.2016.09.009
URI
http://hdl.handle.net/10203/240649
Appears in Collection
CE-Journal Papers(저널논문)
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