1. Research Institute of Highway, Ministry of Transport, Beijing 100088, China;
2. School of Civil Engineering, Hebei University of Technology, Tianjin 300401, China
Effect of Moisture Content and Fiber on the High-temperature Properties of Tunnel Second Lining Concrete
WANG Ru-yi1,2, YAN Qian-qian1,2, TIAN Bo1, XIE Jin-de1
1. Research Institute of Highway, Ministry of Transport, Beijing 100088, China;
2. School of Civil Engineering, Hebei University of Technology, Tianjin 300401, China
摘要The critical moisture content of concrete with different fibers and the quality loss of different moisture contents are analyzed by simulating the real heating curve of the building material in a fire, and a fire test on the concrete slab is conducted. Results show that (1) moisture content greatly influences the surface burst degree, number of cracks, time of water seepage, and quality loss of the specimen after a fire; (2) the critical moisture content of fireproof fiber concrete burst is higher than that of three other kinds of concrete (normal concrete, polyethylene fiber concrete, and polypropylene fiber concrete), and has the highest crack resistance; and (3) the observation of fire spalling and the burn crisp degree of the concrete slab with the same moisture content verified that the fireproof fiber has a better anti-burst effect. Testing the post-fire side face of concrete slabs and the regional rebound value show that rebound value losses are not the same because of different temperature distributions on the side faces of the concrete slabs. The loss of mechanical property of the concrete is related to the temperature field.
Abstract：The critical moisture content of concrete with different fibers and the quality loss of different moisture contents are analyzed by simulating the real heating curve of the building material in a fire, and a fire test on the concrete slab is conducted. Results show that (1) moisture content greatly influences the surface burst degree, number of cracks, time of water seepage, and quality loss of the specimen after a fire; (2) the critical moisture content of fireproof fiber concrete burst is higher than that of three other kinds of concrete (normal concrete, polyethylene fiber concrete, and polypropylene fiber concrete), and has the highest crack resistance; and (3) the observation of fire spalling and the burn crisp degree of the concrete slab with the same moisture content verified that the fireproof fiber has a better anti-burst effect. Testing the post-fire side face of concrete slabs and the regional rebound value show that rebound value losses are not the same because of different temperature distributions on the side faces of the concrete slabs. The loss of mechanical property of the concrete is related to the temperature field.
基金资助:Supported by the Project of Science and Technology Department of Guangxi Zhuang Autonomous Region (No.1298011-3)
通讯作者:
WANG Ru-yi, E-mail:1099882336@qq.com
E-mail: 1099882336@qq.com
引用本文:
王如意, 闫倩倩, 田波, 谢晋德. 含湿量和纤维对隧道二衬混凝土高温性能的影响[J]. Journal of Highway and Transportation Research and Development, 2015, 9(3): 63-68.
WANG Ru-yi, YAN Qian-qian, TIAN Bo, XIE Jin-de. Effect of Moisture Content and Fiber on the High-temperature Properties of Tunnel Second Lining Concrete. Journal of Highway and Transportation Research and Development, 2015, 9(3): 63-68.
[1] WANG Li, LIU Hong-bin, JU Yang, et al. Mechanism of Explosive Spalling of High Strength and High Performance Concrete Exposed to Elevated Temperature[J]. Mechanics in Engineering, 2014, 36(4):403-412. (in Chinese)
[2] LUO Jun-li, XU Zhi-sheng, GUO Xin-jun, et al. Experimental Study on the Explosive Spalling and Fire Damage of the Lining Segment in Tunnel Construction[J]. Journal of Safety and Environment, 2013, 13(5):159-164. (in Chinese)
[3] LI Rong-tao. Numerical Analysis of Mechanism of Explosive Spalling in Heated Concrete[J]. New Building Materials, 2011(1):1-4. (in Chinese)
[4] CHAN S Y N, PENG G F, ANSON M. Fire Behavior of High-performance Concrete Made with Silica Fume at Various Moisture Contents[J]. ACI Materials Journal, 1999, 97(3):405-409.
[5] KALIFA P, CHENE G, GALL E C. High-temperature Behavior of HPC with Polypropylene Fibers from Spalling to Micro-structure[J]. Cement and Concrete Research, 2001, 31(2):1487-1499.
[6] LIN Zhi, GUO Jun, LI Qiang. Rules of Physical and Mechanical Damages of High Temperature of Fire to Lining Concrete in Highway Tunnels[J]. Technology of Highway and Transport, 2012(6):92-96. (in Chinese)
[7] GAO Dan-ying, YAN Dong-ming, LI Xiang-yu. Splitting Strength of GGBFS Concrete Incorporating with Steel Fiber and Polypropylene Fiber after Exposure to Elevated Temperatures[J]. Fire Safety Journal, 2012(54):67-73.
[8] KAWASHIMA K, ZAFRA R, SASAKI T, et al. Effect of Polypropylene Fiber Reinforced Cement Composite and Steel Fiber Reinforced Concrete for Enhancing the Seismic Performance of Bridge Columns[J]. Journal of Earthquake Engineering, 2011, 15(8):1194-1211.
[9] BIAN Song-hua, PENG Gai-fei, ZHAO Zhang-li, et al. Effects of Moisture Contents and Fibers on Properties of High Performance Concrete at High Temperatures[J]. Journal of Building Materials, 2005, 8(3):321-327. (in Chinese)
[10] XU Zhi-sheng, DUAN Xiong-wei, WU De-xing, et al. Experimental Research on Influence for Water Content to the Fire-resistance Property of Tunnel Lining Concrete[J]. Journal of Railway Science and Engineering, 2010, 7(5):59-64. (in Chinese)
[11] VAN DER HEIJDEN G H A, VAN BIJNEN R M W,PEL L, et al. Moisture Transport in Heated Concrete, as Studied by NMR, and Its Consequences for Fire Spalling[J]. Cement and Concrete Research, 2007, 37(6):894-901.
[12] LIU Xian, YUAN Yong, YE Guang, et al. Investigation on the Mechanism of Explosive Spalling of High Performance Concrete at Elevated Temperatures[J]. China Civil Engineering Journal, 2008, 41(6):61-68. (in Chinese)
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2015, Vol. 9 
