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http://dx.doi.org/10.12652/Ksce.2012.32.6A.419

Properties of Permeable Formwork using Permeable Liner  

Lee, Jong Suk (한국건설기술연구원)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.6A, 2012 , pp. 419-426 More about this Journal
Abstract
Fresh concrete has 10~20% extra water in it. As those water remain entrapped air in the concrete, life span of structures is reduced. For that reason, if extra water is eliminated, it will be useful to improve the durability of the structures. Though there were many reports about permeable formwork, the study on the properties of permeable liner itself has been insufficient. In addition, making holes on the form causes lowering of workability. Therefore, this study reviewed the properties of woven and non-woven permeable liner and formwork which has no holes on the form. For the woven and non-woven permeable liner, they showed great application with W/C decrease, lowering roughness, increased compressive strength of surface area and slight loss of cement paste, when the were applied to concrete. In addition, they showed different performance according to the density of woven liner or thickness of non-woven liner. Furthermore, when using the draining non-woven permeable liner which has drainage path inside, concrete surface showed required performance with high workability, without drilling the holes on the form.
Keywords
formwork; surface; durability; permeable liner;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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