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http://dx.doi.org/10.9711/KTAJ.2021.23.5.303

Fire resistance assessment of segment lining with PP fiber amount  

Choi, Soon-Wook (Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Kang, Tae-Ho (Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Lee, Chulho (Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
Kim, Hae Song (Kimpo and Paju Expressway 400 Section 2, Hyundai Construction)
Ahn, Byoungcheol (Kimpo and Paju Expressway 400 Section 2, Hyundai Construction)
Chang, Soo-Ho (Construction Industry Promotion Department, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.23, no.5, 2021 , pp. 303-314 More about this Journal
Abstract
With the high quality/high stiffness/high strength of segment lining, segment lining is increasingly used as the final lining of the tunnel. Precast concrete lining has higher quality and strength than field concrete. Paradoxically, this contributes to greater damage to concrete in the event of a fire in a tunnel. In this study, tests were conducted to determine the fire resistance performance of segment linings according to fiber content in fire resistance methods using synthetic fibers such as PP fibers. As a result, it was confirmed that fire resistance performance required by the relevant project can be secured when using 1.5 kg/m3 of PP fiber. In addition, comparison of the results of PP fibers with PET, a similar synthetic fiber, showed better fire resistance performance than when PP fibers were used.
Keywords
Tunnel; Segment; Fire resistance; PP fiber; Temperature;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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