Enhancement Punching Shear in Flat Slab Using Mortar Infiltrated Fiber Concrete
Abstract
In this paper, improving the punching shear of slab column connection using mortar infiltrated fiber concrete is studied. Eight specimens of reinforced concrete slabs identical in dimension and reinforcement were tested, six of them were casting with hybrid concrete (normal strength concrete and mortar infiltrated fiber concrete) and two specimens were cast with normal strength concrete as control specimens. All specimens were tested under vertical loading. The mortar infiltrated fiber concrete was cast monolithically with the normal strength concrete at different thickness at one and a half times of the effective depth (1.5d) at the center of the slab, once at all the thickness of cross section of the slab and the others at half thickness either tension or compression face of the slabs all cases cast with two types of fiber. The vertical load was applied upward through a square column with a dimension of (100 mm). In all slabs, no failure in mortar infiltrated fiber concrete was observed. The test results showed that the use of mortar infiltrated fiber concrete improves the punching shear strength for some cases according to the type of fibers and the location of casting mortar infiltrated fiber concrete in slabs. The enhancement in punching shear strength due to using mortar infiltrated fiber concrete at 1.5d square shape (265 mm) ranged from 4% to 46% compared with the control specimens.
Keywords
References
American Concrete Institute. Building Code Requirements for Structural Concrete (ACI 318-14): Commentary on Building Code Requirements for Structural Concrete (ACI 318R-14): an ACI Report. American Concrete Institute. ACI, 2014.
BS 1881 part 116, "Method for determination of compressive strength of concrete cube", British Standards Institutions, 1989.
Gilani, Adel Mohamed, “Various durability aspects of slurry infiltrated fiber concrete.” Ph.D Dissertation in Middle East Technical University, 2007. Available online: https://etd.lib.metu.edu.tr/upload/12608753/index.pdf (Accessed on: 10 Apr 2020).
Dagar, Kuldeep. "Slurry infiltrated fibrous concrete (SIFCON)." International Journal of Applied Engineering and Technology 2, no. 2 (2012): 99-100.
Deepesh, Patil, and Kanase Jayant. "Study of mechanical and durability properties of SIFCON by partial replacement of cement with fly ash as defined by an experimental based approach." International Journal for Innovative Research in Science & Technology 5, no. 5 (2016).
Rastegarian, Saeed, and Ashkan Sharifi. “An Investigation on the Correlation of Inter-Story Drift and Performance Objectives in Conventional RC Frames.” Emerging Science Journal 2, no. 3 (July 9, 2018). doi:10.28991/esj-2018-01137.
Farnam, Y., M. Moosavi, M. Shekarchi, S.K. Babanajad, and A. Bagherzadeh. “Behaviour of Slurry Infiltrated Fibre Concrete (SIFCON) Under Triaxial Compression.” Cement and Concrete Research 40, no. 11 (November 2010):1571–1581. doi:10.1016/j.cemconres.2010.06.009.
Pannem, Rama Mohan Rao, “Punching Strength and Impact Resistance Study of SIFCON with Different Fibres.” International Journal of Civil Engineering and Technology (IJCIET) 8, no.4 (2017):1123-1131.
H. Sudarsana Rao, N.V. Ramanab and K. Gnaneswarc “Behaviour of Restrained Sifcon Two Way Slabs Part 2: Punching Shear” Asian Journal of Civil Engineering (Building and Housing) Vol. 10, No. 4 (2009):481-494
Jaafer, Abdulkhaliq Abdulyimah. “Experimental Investigation on the Ferrocement Slabs with a Sifcon Matrix.” Wasit Journal of Engineering Sciences 3, no. 1 (March 9, 2015): 40–54. doi:10.31185/ejuow.vol3.iss1.34.
Ali, M. A. "Properties of Slurry Infiltrated Fiber Concrete (SIFCON)." PhD diss., Ph.D. Thesis, civil engineering dep., UOT, Iraq, 2018.
ACI Committee. "ACI 211.1-91 Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete, no. 9." Unites States (2002):120-121.
Iraq Specification No.45, "Natural Sources for Gravel that is used in concrete and construction", Baghdad (1984).
ASTM C33/86, Standard Specification for Concrete Aggregates.
Giridhar, R., P. Rama, and M. Rao. "Determination of mechanical properties of slurry infiltrated concrete (SIFCON)." International Journal for Technological Research in Engineering 2, no. 7 (2015): 1366-1368.
Khamees, Shahad S., Mohammed M. Kadhum, and Nameer A. Alwash. “Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete.” Civil Engineering Journal 6, no. 1 (January 1, 2020): 21–33. doi:10.28991/cej-2020-03091450.
Krishnan, M Gopala, D Elavarasi, “Experimental study on slurry infiltrated fibrous concrete with sand replaced by Msand.” International Journal of Engineering Research & Technology 3, no. 5 (2014): 534-537.
ASTM C494/C494M, Standard Specification for Chemical Admixtures for Concrete, 2017.
ASTM A820 / A820M – 16 Standard Specification for Steel Fibers for Fiber-Reinforced Concrete.
ASTM A615 / A615M-16, Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement, ASTM International, West Conshohocken, PA, 2016, www.astm.org.
Hashim, Ali Mudhafar, and Mohammed Mansour Kadhum. “Compressive Strength and Elastic Modulus of Slurry Infiltrated Fiber Concrete (SIFCON) at High Temperature.” Civil Engineering Journal 6, no. 2 (February 1, 2020): 265–275. doi:10.28991/cej-2020-03091469.
E. Rizk, H. Marzouk, A. Hussein, and M. Hossin “Punching Shear of Thick Plates with and Without Shear Reinforcement.” ACI Structural Journal 108, no. 5 (2011). doi:10.14359/51683215.
DOI: 10.28991/cej-2020-03091560
Refbacks
- There are currently no refbacks.
Copyright (c) 2020 Ali Sabah Imran Shwalia, Nabeel Hasan Ali Al-Salim, Haider M. Al-Baghdadi
This work is licensed under a Creative Commons Attribution 4.0 International License.
