An Experimental Study on Fire Resistance Performance and Evaluation of Asymmetric Slim Floor Beam

2012 ◽  
Vol 446-449 ◽  
pp. 1103-1108
Author(s):  
Hyung Jun Kim ◽  
Heung Youl Kim ◽  
Soo Young Park

Composite beam using asymmetric H-shaped steel is one of the constructional structures developed in the advanced countries in Europe since early 1990s. The purpose of this study on composite beams where H-shaped steel is partially laid in concrete slabs was to find how to design fire protection and improve fire-resistance to make deep deck plates provide the beams with advantages upon a fire and to improve stiffness in structural aspect. Only lower flange which is directly exposed to a fire was included in fire-resistance design in order to decide optimal fire- protection design condition and test was conducted for spray-coating and paint-coating. In the fire resistance test, web thickness and lower flange thickness were varied to derive the optimum condition for improving fire-resistance performance. It was observed from the test that 90-minute-protection employed to lower flange provided fire resistance for 3 hours. It was also observed that the basic shape resisted fire for 89 minutes, while web reinforcement and lower flange reinforcement provided fire-resistance for 112 and 157 minutes, respectively. The result showed that lower flange reinforcement is the most effective way to improve fire-resistance.

2011 ◽  
Vol 82 ◽  
pp. 752-757 ◽  
Author(s):  
Hyung Jun Kim ◽  
Heung Youl Kim ◽  
Soo Young Park

Composite beam using asymmetric H-shaped steel is one of the constructional structures developed in the advanced countries in Europe since early 1990s. The purpose of this study on composite beams where H-shaped steel is partially laid in concrete slabs was to find how to design fire protection and improve fire-resistance to make deep deck plates provide the beams with advantages upon a fire and to improve stiffness in structural aspect. Only lower flange which is directly exposed to a fire was included in fire-resistance design in order to decide optimal fire- protection design condition and test was conducted for spray-coating and paint-coating. In the fire resistance test, web thickness and lower flange thickness were varied to derive the optimum condition for improving fire-resistance performance. It was observed from the test that 90-minute-protection employed to lower flange provided fire resistance for 3 hours. It was also observed that the basic shape resisted fire for 89 minutes, while web reinforcement and lower flange reinforcement provided fire-resistance for 112 and 157 minutes, respectively. The result showed that lower flange reinforcement is the most effective way to improve fire-resistance.


2014 ◽  
Vol 661 ◽  
pp. 111-117 ◽  
Author(s):  
Ahmad Zakiah ◽  
Ahmad Nursafarina ◽  
Azerai Ali Rahman ◽  
Hanizah Abdul Hamid ◽  
Mohammad Soffi Md Noh

This paper reports the investigation on the fire resistance performance of reinforced concrete column with embedded permanent formwork from woodwool board (WWCB). A series of slender column embedded with and without WWCB with cross-sections 200 mm x 200 mm for column without WWCB and 300 mm x 300 mm with embedded 50 mm thick WWCB. The height of the slender column was 2000 mm. The fire resistance test was performed in accordance with BS 476-22:1987 for two (2) hours fire exposure. The fire resistance test for the embedded column with WWCB was classified as “good” in resisting fire and heat transfer.


2015 ◽  
Vol 2015 ◽  
pp. 1-13
Author(s):  
De-Hua Chung ◽  
Tien-Chih Wang ◽  
Ming-Ju Tsai ◽  
Ta-Hui Lin ◽  
Shin-Ku Lee

The structure of high-speed roller door with water film has improved in this study. The flameproof water film system is equipped with a water circulating device to reduce the water consumption of water film system. The water film is generated at the roller box of the high-speed roller door in this study. The heating test is done with the full-scale heating furnace. Both cases of the water film on unexposed surface and water film on exposed surface passed the fire resistance test based on ISO 834, proving that the high-speed roller door with water film system has 120A fire resistance period. The main findings indicate that the water film on exposed surface shows that as the amount of water film evaporated by high temperature inside the furnace must be greater than the evaporation capacity of water film on unexposed surface, the required water supply is 660 L more than the water film on unexposed surface.


2020 ◽  
Vol 20 (1) ◽  
pp. 195-202
Author(s):  
Jiwoo Han ◽  
Hyewon Kim ◽  
Byeongheun Lee ◽  
Seunghyeon Jin ◽  
Youngjin Kwon

This is an experimental study that analyzes the fire resistance performance of the types of glass installed in an opening to prevent a fire from spreading through the opening. The fire resistance test for glazed elements (KS F 2845) was performed on four materials: laminated glass, general glass, double-layer glass, and toughened glass. To analyze the risk of fire of each glass type, the temperature prediction of the fire room in the building was analyzed. As a result, the laminated glass ruptured at 617 ℃, and it was found to be the most resistant to heat amongst all the glass types. Additionally, the temperature of the fire in the compartment was predicted to reach 617 ℃ in 3 min. A performance review is required for the glass installed in the opening to prevent the fire from spreading.


2011 ◽  
Vol 90-93 ◽  
pp. 3122-3130 ◽  
Author(s):  
Xin Zhang ◽  
Guo Qiang Zhang

Nowadays the mechanical properties of epoxy resin used to paste CFRP strengthening the concrete structures, has a sharp drop in more than 60°C. Four CFRP-strengthened concrete one-way slabs were studied in the fire, one using epoxy resin and the other three using inorganic adhesive (Magnesium Oxychloride Cement). The experimental results show that :(a) The fire resistance performance of CFRP-strengthened concrete slab by inorganic adhesive with 15mm thickness fire protection was better than the slab without fire protection; (b) Without considering the impact of burst, the fire resistance performance of CFRP-strengthened concrete slab by inorganic adhesive with 30mm fire protection was better than the slab with 15mm fire protection;(c)Under the same fire protection measures, the fire resistance performance of CFRP-strengthened concrete slab with inorganic adhesive was better than the concrete slab strengthened with CFRP by epoxy adhesive.


2000 ◽  
Vol 43 (24) ◽  
pp. 4395-4404 ◽  
Author(s):  
Zhao-Fen Jin ◽  
Yutaka Asako ◽  
Yoshiyuki Yamaguchi ◽  
Minoru Harada

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