Structural Behavior of High Strength Laced Reinforced Concrete One Way Slab Exposed to Fire Flame
Abstract
In this study, an experimental investigation had conducted for six high strength laced reinforced concrete one-way slabs to discover the behavior of laced structural members after being exposed to fire flame (high temperature). Self-compacted concrete (SCC) had used to achieve easy casting and high strength concrete. All the adopted specimens were identical in their compressive strength of ( , geometric layout 2000 750 150 mm and reinforcement specifics except those of lacing steel content, three ratios of laced steel reinforcement of (0.0021, 0.0040 and 0.0060) were adopted. Three specimens were fired with a steady state temperature of for two hours duration and then after the specimens were cooled suddenly by spraying water. The simply supported slabs were tested for flexure behavior with two line loads applied in the middle third of the slab (four-point bending test). The average residual percentage of cubic compression strength and splitting tensile strength were 57.5% and 50% respectively. The outcomes indicated that the residual bending strength of the burned slabs with laced ratios (0.0021, 0.004, 0.006) were (72.56, 70.54 and 70.82%) respectively. However; an increase in the deflection was gained to be (11.34, 14.67 and 17.22%) respectively with respect to non-burned specimens.
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References
Department Of Defense Washington Dc. “Unified Facilities Criteria (UFC) Design Guide. Army Reserve Facilities” (February 1, 2010). doi:10.21236/ada530875.
Moss, P.J., R.P. Dhakal, G. Wang, and A.H. Buchanan. “The Fire Behaviour of Multi-Bay, Two-Way Reinforced Concrete Slabs.” Engineering Structures 30, no. 12 (December 2008): 3566–3573. doi:10.1016/j.engstruct.2008.05.028.
Mehrafarid Ghoreishi, Ashutosh Bagchi and Mohamed A. Sultan, “Estimating the Response of Flat Plate Concrete Slab Systems to Fire Exposure”, SIF’10 –Structures in Fire, Proceedings of the Sixth International Conference, East Lansing, MI, USA, (2010): 286-293.
Harada, T., J. Takeda, S. Yamane, and F. Furumura. "Strength, elasticity and thermal properties of concrete subjected to elevated temperatures." Special Publication 34 (1972): 377-406.
Amer F. Izzat, Jamal A. Farhan, and Ammar A. Hammadi, “Effect of Fire Flame (High Temperature) on the Self Compacted Concrete (SCC) One Way Slabs”, Journal of Engineering, Collage of Engineering, University of Baghdad, (2012): 1083-1099.
Shatha, D. Mohammed and Nada M. Fawzi, “Fire Flame Influence on the Behavior of Reinforced Concrete Beams Affected by Repeated Load”, Journal of Engineering, (2015): 206-223.
Stanley C. Woodson, “Lacing Versus Stirrups an Experimental Study of Shear Reinforcement in Blast Resistant Structures”, U.S. Army Engineer Waterways Experiment Station, 3909 Halls Ferry Road, Vicksburg, March (1992).
Parameswaran, V. S., N. Lakshmanan, P. Srinivasulu, T. S. Krishnamoorthy, K. Balasubramanian, T. S. Thandavamoorthy, and M. Arumugam. “Application of laced reinforced concrete construction techniques to blast-resistant structures”, Structural Engineering Research Center, Chennai. SERC Report No. RCC-SR-86-1 (1986).
Keshava Rao, M.N., Lakshmanan, N., Srinivasulu, P. and Dharaneepathy, M. V., “Application of Laced Reinforced Concrete Construction Techniques to Blast Resistant Structures”, phase II, Report No. S-015, CSIR-SERC (1992).
Akshaya S. G., Ananthakrishnan R., Vishnupriya B., Arunprasadh, Manikandan G. and Sanjeevi R. “Experimental Studies on Laced Steel Concrete Composite Elements Extrem Loading Condition”, IOSR Journal of Mechanical and Civil Engineering, (2015): 54-61.
Hussain A. Jabir, “The Behavior of One Way Concrete Slab with Lacing Reinforcement Subjected to Static and Repeated Load.” Ph.D. Thesis/ Civil Engineering Department /Collage of Engineering/ University of Baghdad (2016).
Hallawi, Ali Faiq, and Ali Hussein Ali Al-Ahmed. “Enhancing the Behavior of One-Way Reinforced Concrete Slabs by Using Laced Reinforcement.” Civil Engineering Journal 5, no. 3 (March 19, 2019): 718. doi:10.28991/cej-2019-03091282.
EFNARC, Specification. "Guidelines for Self-Compacting Concrete, European Federation for Specialist Construction Chemicals and Concrete Systems, Norfolk, UK." English ed., February (2002).
ACI Committee, American Concrete Institute. “Building Code Requirements for Structural Concrete (ACI 318M-14) and commentary” (November 6, 2014). doi:10.14359/51688187.
ASTM E-119-00a “Standard Test Methods for Fire Tests of Building Construction and Materials,” (2000): 19-27.
Tan, Kiang Hwee, and Haidong Zhao, “Strengthening of Openings in One-Way Reinforced-Concrete Slabs Using Carbon Fiber-Reinforced Polymer System”, Journal of Composites for Construction 8, no. 5 (October 2004): 393-402. doi:10.1061/(asce)1090-0268(2004)8:5(593).
DOI: 10.28991/cej-2019-03091446
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