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Investigation of Material Characteristics of Reinforced Concrete Beam After Exposure to Fire Test
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 Title & Authors
Investigation of Material Characteristics of Reinforced Concrete Beam After Exposure to Fire Test
Ju, Min-Kwan; Park, Cheol-Woo; Oh, Ji-Hyun; Seo, Sang-Gil; Shim, Jae-Won;
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 Abstract
Concrete is inherently a good fire-resistance material among all other constrcution materials and protects the reinforcing steel inside. This study investigates the material characteristics of concrete and steel bar inside the full scale reinforced concrete(RC) beam exposed to fire test. The fire test specimen was 4 m long and the test was conducted under no loading condition following KS F 2257. Fire source is simulated by ISO 834 and number of thermocouples were installed to measure temperature variation of surfaces and inside of the beam. The measured compressive strength of cored specimen, which was exposed to fire test, was 11 MPa, about 66% lower than the strength before exposure. The yielding strength of steel bar also decreased about 75 MPa, about 17% lower. The measured temperature of protected steel bar was around , the critical limit, after 4 hour exposure.
 Keywords
Fire test;RC beam;Compressive strength;Yielding strength;Temperature limit;
 Language
Korean
 Cited by
 References
1.
Concrete Structure Design Specification (2012), Korea Concrete Institute.

2.
Kim, S.G., Kim, S.J., Kim, D.J., and Kwon, Y.J. (2009), An Investigation on the Tunnel Fire Accident Performance Based Fire Safety Design in Korea and foreign Countries, Proceedings of Korea Institute of Fire Science and Engineering, pp. 341-346.

3.
Korea Expressway Corporation (2011), Restoring Design and Construction from Fire Damages for Bucheon High Rise Bridge.

4.
Korea Expressway Corporation (2013), Exploring of Fire Resistance Design of Bridge Substructure and Underneath Structure, Research report.

5.
Korea Highway Design Specification (2010), Korea Road & Transportation Association.

6.
Korean Standard Association (2003), Methods of Tensile Test for Metallic Materials (KS B 0802).

7.
Korean Standard Association (2010), Standard Test Method for Compressive Strength of Concrete (KS F 2405).

8.
Korean Standard Association (2011), Methods of Fire Resistance Test for Elements of Building Construction (KS F 2257-6).

9.
Miamis, K. (2007), A Study of the Effects of High Temperature on Structural Steel Framing, Doctoral dissertation.

10.
Ministry of Land, Infrastructure and Transport (2011), Commentary of Diagnosis and In-depth Inspection.

11.
Ministry of Land, Infrastructure and Transport (2012), Standard for Fire Resistance Structures (No. 2012-625).

12.
New York State Department of Transportation (NYDoT) (2008), Bridge Fire Incidents in New York State (Private Correspondence with Prof. M. Garlock), New York State, USA.