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http://dx.doi.org/10.9798/KOSHAM.2011.11.1.001

Characterization of Fiber Connectivity in Fire-resistant High Strength Concrete using Percolation Theory  

Shin, Young-Sub (연세대학교 토목환경공학과)
Han, Tong-Seok (연세대학교 토목환경공학과)
Publication Information
Abstract
To improve fire-resistance of a high strength concrete against explosive spalling under elevated temperature, fibers can be mixed with concrete to provide flow paths of evaporated water within concrete to the free surface. The fiber-mix concrete approach is effective against explosive spalling when the flow path generated from melting fibers at the elevated temperature is interconnected to transport high pressurized evaporated water from the inside concrete to the free surface. The percolation theory can identify the connectivity of the fibers and provide an estimate of the fire-resistance of concrete by investigating layout of fibers. In this study, the correlation between percolation theory and explosive spalling of fiber-mixed high strength concrete is analyzed and the connectivity of the fiber in concrete is stereologically investigated by using virtual specimens of fiber-mixed high strength concrete.
Keywords
fire-resistance; explosive spalling; high strength concrete; fiber; percolation theory;
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Times Cited By KSCI : 3  (Citation Analysis)
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