Prestressed Precast Hollow-Core Slabs with Different Shear Span to Effective Depth Ratio
Precast
DOI:
https://doi.org/10.31185/ejuow.Vol5.Iss2.53Keywords:
Precast, prestress, hollow core slabs, shear span to depth ratioAbstract
Four full scale precast prestressed hollow-core slabs were tested under the influence of four lines loading with various values of shear span to effective depth ratio (a/d) (1.5, 2, 3.5 and 5). The dimensions of the hollow-core slab were 2000 mm, 1200 mm and 150 mm (length, width and thickness, respectively). All slabs were cast with a high compressive strength concrete of approximately 79.5 MPa. Experimental test results showed four patterns of failure mode depending on the ratio of (a/d). They were flexural failure, flexure-shear failure and shear compression failure. In addition to combination failure between tension shear and anchorage failure, accompanied by sliding strand in concrete. The failure loads decreased about 19.6% as (a/d) increased by 233.3%. Finally, the highest first crack load, 110kN, was recorded for sample, HCS 1.5, having the lowest (a/d) ratio.
References
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[2] Yang L.( 1994). “Design of prestressed hollow core slabs with reference to web shear failure”. J Struct Eng ASCE;120(9):2675–96.
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[9] Elliott KS, Peaston CH, Paine KA. Experimental and theoretical investigation of the shear resistance of steel fibre reinforced prestressed concrete X-beams- Part I: Experimental work. Mater Struct 2002;35:519–27.
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[11] Peaston C, Elliott K, Paine K.( 1999). “ Steel fiber reinforcement for extruded prestressed hollow core slabs”. ACI Spec Publ;182:87–107.
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[13] Rahman M. K. ,· Baluch M. H. ·, Said M. K. ,· Shazali M. A.( 2012). “Flexural and Shear Strength of Prestressed Precast Hollow-Core Slabs”. Arabian Journal for Science and Engineering, March, Volume 37, Issue 2, pp 443–455.
[14] Mones R .M, Breña S .F.( 2013). “ Hollow-core slabs with cast-in-place concrete toppings”, A study of interfacial shear strength. Summer , PCI Journal, pp124-140.
[15] Eray Baran (2015) .“Effects of cast-in-place concrete topping on flexural response of precast concrete hollow-core slabs”. Engineering Structures 98 . 109–117.
[16] BSI. Structural use of concrete – Part 1: “code of practice for design and construction: BS 8110-1. London: British Standard Institute”; 1997.
[2] Yang L.( 1994). “Design of prestressed hollow core slabs with reference to web shear failure”. J Struct Eng ASCE;120(9):2675–96.
[3] Walraven JC, Mercx WPM. (1983). “The bearing capacity of prestressed hollow core slabs”. HERON; Vol.28, No.3, pp 1- 46.
[4] Elliott KS, Peaston CH, Paine KA.( 2002). “ Experimental and theoretical investigation of the shear resistance of steel fibre reinforced prestressed concrete X-beams-Part II”: Theoretical analysis and comparison with experiments. Mater Struct; 35: 528–35.
[5] De Castilho, V.C., Carmo Nicoletti M., and El Debs, M.K.( 2005). “An investigation of the use of three selection-based genetic algorithm families when minimizing the production cost of hollow core slabs”. Computer Methods in Applied Mechanics and Engineering, 194(45-47): 4651–4667.
[6] Hosny A, Sayed-Ahmed E Y, Abdelrahman A A .and Alhlaby .N.A.( 2011). “Strengthening precast-prestressed hollow core slabs to resist negative moments using carbon fibre reinforced polymer strips: an experimental investigation and a critical review of Canadian Standards Association S806-02” Canadian journal of civil engineering February.
[7] Paine KA. Steel fibre reinforced concrete for prestressed hollow core slabs, PhD thesis, University of Nottingham; 1998. p. 325.
[8] Paine KA. (1996). “Trial production of fibre reinforced hollow core slab”. Research Report SR96007; p. 38.
[9] Elliott KS, Peaston CH, Paine KA. Experimental and theoretical investigation of the shear resistance of steel fibre reinforced prestressed concrete X-beams- Part I: Experimental work. Mater Struct 2002;35:519–27.
[10] Cuenca E , Serna P. (2013) . “Failure modes and shear design of prestressed hollow core slabs made of fiber-reinforced concrete”. Institute of Concrete Science and Technology (ICITECH), Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain, Part B 45 ,952–964.
[11] Peaston C, Elliott K, Paine K.( 1999). “ Steel fiber reinforcement for extruded prestressed hollow core slabs”. ACI Spec Publ;182:87–107.
[12] Bertagnoli G, Mancini G.( 2009). “Failure analysis of hollow-core slabs tested in shear”. Struct Conc (fib J);10(3):139–52.
[13] Rahman M. K. ,· Baluch M. H. ·, Said M. K. ,· Shazali M. A.( 2012). “Flexural and Shear Strength of Prestressed Precast Hollow-Core Slabs”. Arabian Journal for Science and Engineering, March, Volume 37, Issue 2, pp 443–455.
[14] Mones R .M, Breña S .F.( 2013). “ Hollow-core slabs with cast-in-place concrete toppings”, A study of interfacial shear strength. Summer , PCI Journal, pp124-140.
[15] Eray Baran (2015) .“Effects of cast-in-place concrete topping on flexural response of precast concrete hollow-core slabs”. Engineering Structures 98 . 109–117.
[16] BSI. Structural use of concrete – Part 1: “code of practice for design and construction: BS 8110-1. London: British Standard Institute”; 1997.
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Published
2017-10-11
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Section
Civil Engineering
How to Cite
Mhalhal, J. M. (2017). Prestressed Precast Hollow-Core Slabs with Different Shear Span to Effective Depth Ratio: Precast. Wasit Journal of Engineering Sciences, 5(2), 1-11. https://doi.org/10.31185/ejuow.Vol5.Iss2.53
