Load-deflection behaviour of hybrid concrete flat slab

• Autorzy: Makki Ragheed F. , Alalikhan Ahmed A. , Al-Katib Haider A.

Identyfikatory

DOI

10.22630/PNIKS.2019.28.4.47

• Języki publikacji: EN

Abstrakty

EN

Due to the important role of high strength concrete in the structural systems, present work focuses on the use of this material as a strengthening technique incorporating with the normal strength concrete in flat slab system. Eight simply supported flat slab models with (1,000 ×1,000 ×120 mm) dimensions are investigated based on three groups including normal strength concrete and high strength concrete. The first group represents models containing of two flat slabs fully with one type of concrete; NSC and HSC as control flat slab. The second and third groups consist of six flat slabs as hybrid flat slabs of two layer of concrete with different thicknesses. Concrete mixture HSC was used in tension zone in three hybrid flat slabs (second group) with three thicknesses (30, 60 and 90 mm), while the remaining three hybrid flat slabs (third group) was used the HSC in compression zone with the same previous thicknesses. The experimental results shown that the ultimate load increased about (19.4%) when HSC was used fully (hH /h=1) instead of using NSC in the control flat slab (NSC slab). The hybrid flat slabs with use HSC in compression zone showed higher in cracking and ultimate flexural loads compared with those of the hybrid flat slabs with use HSC in tension zone and also were stiffer in load-defl ection curve with the hybrid flat slabs with HSC in tension zone, also the hybrid flat slabs showed an improvement in the cracking load and ultimate flexural load when increasing the thickness of the HSC layer (hH/h) in both tension and compression zone as compared to control flat slab (NSC slab).

Słowa kluczowe

EN

load-deflection behaviour; normal strength concrete; high strength concrete; hybrid concrete; flat slab

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Przegląd Naukowy Inżynieria i Kształtowanie Środowiska
• Rocznik: 2019
• Tom: Vol. 28, No. 4
• Strony: 516--525
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wykr., zdj.

Twórcy

autor

Makki Ragheed F.

• University of Kufa, Faculty of Engineering, Department of Civil Engineering, Iraq

autor

Alalikhan Ahmed A.

• University of Kufa, Faculty of Engineering, Department of Civil Engineering, Iraq

autor

Al-Katib Haider A.

• University of Kufa, Faculty of Engineering, Department of Civil Engineering, Iraq

Bibliografia

• Abtan, Y.G. & Jaber, H.T. (2016). Behavior of hybrid reinforced concrete beams combining reactive powder concrete and varying types of lightweight concrete. Journal of Engineering and Development, 20(2), 204-223.
• Al-Jaberi, L., Abbas, Z.W. & Jaffar, E.K. (2016). Effect of volume of steel fibers on the punching shear behavior of hybrid reinforced concrete flat slab. Journal of Engineering and Development, 20(2), 24-38.
• Annadurai, A. & Ravichandran, A. (2016). Flexural behavior of hybrid fiber reinforced high strength concrete. Indian Journal of Science and Technology, 9(1), 1-5. https://www.doi.org/10.17485/ijst/2016/v9i1/74084
• American Concrete Institute Committee 318 [ACI 318] (2014). Building code requirements for structural concrete. American Concrete Institute.
• Aziz, A.H., Al-Nu’man, B.S. & Husain, H.M. (2006). Shear behavior of hybrid reinforced concrete I-beams containing steel fiber reinforced concrete (SFRC) and high strength concrete (HSC). Journal of Engineering and Sustainable Development, 10(4), 36-52.
• Delef, A.N., Jarallah, H.K. & Salman, M.M. (2013). Experimental study for shear behavior of hybrid self-compacting concrete beams. Journal of Engineering and Development, 17(2), 97-118.
• Hassan, F.H. (2015). Behavior of hybrid deep beams containing ultra high performance and conventional concretes. Engineering and Technology Journal, 33(1), 30-50.
• Kang, S.H., Hong, S.G. & Kwon, Y.H. (2017). Effect of permanent formwork using ultra-high performance concrete on structural behaviour of reinforced concrete beam subjected to bending as a function of reinforcement parameter. Journal of Applied Mechanical Engineering, 6(2), 1-6.
• Moon, J., Reda Taha, M.M. & Kim, J.J. (2017). Flexural strengthening of RC slabs using a hybrid FRP-UHPC system including shear connector. Journal of Advances in Materials Science and Engineering, #4387545. https://www.doi.org/10.1155/2017/4387545
• Sarsam, K.F. & Mohammed, H.M. (2014). Flexural strength of hybrid beams containing reactive powder concrete and conventional concrete. Journal of Engineering and Development, 18(5), 61-91.
• Suha, R.A. & Haitham, J.A. (2017). Behavior of hybrid concrete beams containing two types of high strength conncrete (HSC) and conventional concrete. International Journal of Science and Recearch, 6(8), 708-716.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).