Effect of Duration and Intensity of Burning on Columns Exposure to Cyclic Fire
Anbar Journal of Engineering Sciences,
2022, Volume 13, Issue 2, Pages 91-98
AbstractThe term "fire safety engineering" refers to the process of applying scientific and engineering principles to the effects of fire in order to lessen the number of deaths and property damage caused by fire. This is done by determining the risks that are involved and providing the most effective method for implementing measures of prevention or protection. The paper showing experimental results of ordinary concrete columns made of "NSC" subjected to axial load and cyclic firing is presented in this study. the bearing capacity of the column decreased. all samples have been loading an eccentric load with "e = 75 mm" ,"e / h = 0.50," and the ratio Celsius (30%Pu) continuously through the burning period. The first column(C1) was the sample control with out exposure cyclic fire , and the second column was subjected to four burning cycles over the course of four days, with a duration specific of "45 minutes" for each cycle, at a temperature of "400 °C", and the third column was subjected to four burning cycles over the course of four days, with a duration longer amount of "75 minutes" for each cycle, at a temperature of "400 °C, ", the four column was subjected to four burning cycles over the course of an of four days, with a duration specific of "45 minutes" for each cycle, at a temperature of "600 °C " , the bearing capacity of the column decreased. that to be amount losses (C2,C3 and C4) comparison to (C1) equile ( 27.20 , 29.12, and 36.40)% respectively. the fracture load of the experimental columns varied by decreasing with these variables. Additionally, the depth and spread of the cracks increased with the increase in burning duration and target temperature.
 1-A.Y. Nassif,” Postfire full stress–strain response of fire-damaged concrete, Fire Mater”. 30 (5) (2006) 323–332.
 Y.F. Chang, Y.H. Chen, M.S. Sheu, G.C. Yao,” Residual stress–strain relationship for concrete after exposure to high temperatures”, Cem. Concr. Res. 36 (10)(2006) 1999–2005.
 C.S. Poon, S. Azhar, M. Anson, Y.L. Wong, “Strength and durability recovery offire-damaged concrete after post-fire-curing), Cem. Concr. Res. 31 (2001)
 Della Corte, G.; Landolfo, R.; and Mazzolani, F. M., “Post-Earthquake Fire Resistance of Moment Resisting Steel Frames,” Fire Safety Journal, V. 38, No. 7, 2003, pp. 593-612. doi: 10.1016/S0379-7112(03)00047-X
 T.T. Lie, T.J. Rowe, T.D. Lin, “Residual Strength of Fire-Exposed Reinforced Concrete Columns, Evaluation and Repair of Fire Damage to Concrete”, SP 92, American Concrete Institute, Detroit, Michigan, 1984, pp. 153–174.
 L.-H. Hana,b,, X.-K. Linc , Y. Ch. Wangd ,” Cyclic performance of repaired concrete-filled steel tubular columns after exposure to fire”, Thin-Walled Structures 44 (2006) 1063–1076
 Z. Nurizaty¹, A K Mariyana¹̛ ², P N Shek¹, M S A Rahman¹ and M M Najmi¹, M K Iqbal ¹,” A review on concrete-filled steel hollow column subjected to fire and cyclic loadings”, Earth and Environmental Science 220 (2019) 012030
 Huoa,∗ , X. Zeng a , Y. Xiao a,b,” Cyclic behaviours of concrete-filled steel tubular columns with pre-load after exposure to fire”, Journal of Constructional Steel Research, 67 (2011) 727–739.
 A. Ilki1 , U. Demir2 " Factors Affection Seismic Behavior of Reinforced Concrete Structures After Fire Exposure ". February 2019 .
 J. H. Wang, X. Zhang, S. Kunnath, J. He, and Y. Xiao”Post-Earthquake Fire Resistance and Residual Seismic Capacity of Reinforced Concrete Columns “, Article in Aci Structural Journal · July ,2021.
 M.H.Mussa1,a, Mahir M. Hason2,b, and Haider A. Abdulhameed” Fire simulation of RC slab inclusion with nano-silica and high volume fly ash”, AIP Conference Proceedings 2660, 020039 (2022).
 Muthuswamy K R and Thirugnanam G S “Structural behavior of hybrid fiber reinforced concrete exterior Beam-Column joint subjected to cyclic loading “,Int. J. Civ. Struct. Eng,, 2014.
 Natl. Cent. Constr. Lab. Res. Baghdad “Specification I No. 45/1984, Aggregates from Natural Sources for Concrete and Construction”,2001.
 “No I S S 45 Natural Aggregate Resources used in Concrete and Construction”,1984.
 Farming. Hills, MI Am. Concr. Inst “Committee A C I A C I Building code requirements for structural concrete (ACI 318M14): An ACI standard: Commentary on building code requirements for structural concrete (ACI 318M-14)”,2014.
 West Conshohocken Am. Soc. Test. Mater “ASTM A E119-01 Stand. methods fire test Build. Constr. Mater”,2001.
 Russell J .S. “Perspectives in Civil Engineering: Commemorating the 150th Anniversary of the American Society of Civil Engineers (ASCE Publications” ,2003.
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