Punching Shear Strength of Lightweight Self Consolidating Flat Slabs

Document Type : Research Article

Authors

Faculty of Engineering, Ferdowsi University of Mashhad, Khorasan Razavi, Iran

Abstract

In this research, the punching shear strength of flat plate lightweight self-consolidating concrete and lightweight concrete slabs is studied. The experimental work consisted of 9 rectangular slab specimens with either 100 or 150 mm depth, 1000 mm length and 1000 mm width. The type of concrete, strength of concrete and reinforcement varied in different tests. The slab dimensions and the area of reinforcing bars in slabs have been carefully designed so that the slabs failed due to punching shear. In a test, load and displacement were measured using a data acquisition system. Using the results, the behavior of slabs, cracking pattern and the slab stiffness were studied. The experimental results have been compared with the provisions of different codes. The comparison showed that the BS-8110 code estimates the punching shear of lightweight slabs most accurately. The slabs made by leca lightweight aggregates can be used in structures providing that they have a good mix concrete design.

Keywords

References

[1] E. Yasar, C.D. Atis, A. Kilic, H. Gulsen, Strength Properties of lightweight concrete made with basaltic pumice and fly-ash, Materials Letters, 57(15) (2003) 2267-2270.
[2] S. Yanai, N. Sakata, Y. Npbuta, T. Okamoto, Study on Mix Proportion For Self Compacting High Performance Lightweight Aggregate Concrete, in: 2nd International Symposium on Structural Lightweight Aggregate Concrete, Norwegian Concrete Association, Kristiansand, 2000, pp. 705-716.
[3] M. Hubertova, R. Hela, The Effect of Metakaolin and Silica Fume on the Properties of Lightweight Self Consolidating Concrete, in: V. M. Malhotra Ed. 9th Canmet/ACI International Conference on Recent Advances in Concrete Technology, American Concrete Institute, 2007, pp. 35-48.
[4] A. Rahayi, M.R. Nejati, A.H. Karamoziyan, A. Shabestanipour, Investigation of mixture and properties of self consolidating concrete, in: First natinal self consolidating concrete conference, University of Tehran , 1390. (In Persain)
[5] H. Marzouk, M. Osman, S. Helmy, Behavior of High Strength Lightweight Aggregate Concrete Slabs under Column Load and Unbalanced Moment, ACI Structural Journal, 97(6) (2000) 860-866.
[6] H. Marzouk, M. Osman, A. Hussein, Cyclic Loading of High Strength Lightweight Concrete Slabs, ACI Structural Journal, 98(2) (2001) 207-214.
[7] M. Osman, H. Marzouk, Behavior of High Strengh Lightweight Concrete Slabs under Punching Loads, ACI Structural Journal, 97(3) (2000) 492-498.
[8] Building Code Requirements for Structural Concrete (ACI 318M-11) and Commentary, ACI Committee 318, American Concrete Institute, 2011.
[9] Design and Construction of Steel Structures, Ministry of Road and Urbanization, 1392. (In Persian)
[10] B.S. Institution, Structural Use of Concrete, Standard BS-8110, 1997.
[11] ASTM C39 / C39M-16b, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, in, ASTM International, West Conshohocken, 2016.
[12] ASTM C642-13, Standard Test Method for Density, Absorption, and Voids in Hardened Concrete, in: ASTM International, West Conshohocken, 2013.
Amirkabir Journal of Civil Engineering
Volume 50, Issue 3
September and October 2018
Pages 461-470

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