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Combined fiber technique for spalling protection of concrete column, slab and beam in fire

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Abstract

In this study, a combined fiber technique is applied to large high strength concrete specimens with different boundary conditions, and its effects on the fundamental properties of concrete and the spalling protection of concrete are investigated. Experimental test results showed that the application of the combined fiber technique could achieve the least reduction of slump flow, which, in turn, solved the problem of conventional fiber technique for the same level of spalling protection of concrete. Fiber content used for the combined fiber technique was 50 % less than the normal content used for the conventional fiber technique. In addition, this study proved that the new combined fiber technique is applicable to large specimens, but the level of its effectiveness is different. It was demonstrated that this different effectiveness of the combined fiber technique applied to columns, slab and beam is due to their size and boundary conditions.

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Acknowledgments

This research was supported by a grant (391) from Infrastructure and transportation technology promotion research Program funded by Ministry of Land, Infrastructure and Transport of Korean government.

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Authors and Affiliations

  1. Fire Research Center, Korea Institute of Civil Engineering and Building Technology (KICT), Hwaseong, 445-861, Republic of Korea

    Young-Sun Heo

  2. Department of Architectural Engineering, Cheongju University, Cheongju, 360-764, Republic of Korea

    Cheon-Goo Han

  3. Architectural Technology Research Team, Daewoo Institute of Construction Technology, Suwon, 440-210, Republic of Korea

    Kyoung-Min Kim

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  1. Young-Sun Heo
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  2. Cheon-Goo Han
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  3. Kyoung-Min Kim
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Correspondence to Cheon-Goo Han.

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Heo, YS., Han, CG. & Kim, KM. Combined fiber technique for spalling protection of concrete column, slab and beam in fire. Mater Struct 48, 3377–3390 (2015). https://doi.org/10.1617/s11527-014-0406-4

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