The Effect of the Concrete Elimination Ratio on The Structural Behavior of Bubbled Reinforced Concrete Slabs

Yahya Hameed

doi:10.24237/djes.2022.15110

Authors

Yahya Hameed
yahyiamajeed@gmail.com
Department of Civil Engineering, University of Diyala, 32001 Diyala, Iraq

Keywords:

Bubbled slabs, Structural behavior, Elimination ratio, SCC

Abstract

This investigation focuses on the impact of the concrete elimination ratio on the structural behavior of bubbled reinforced self-compacting concrete (SCC) slabs. Construction and testing of eight bubbled slab specimens with dimensions of 45x45x80mm are part of the experimental program. The specimens are separated into two categories. The first set of four specimens is used to explore the effect of removing regular strength SCC from concrete, while the second group is used to investigate the effect of removing high strength SCC from concrete. According to the results of the experiments, increasing the number of balls in a typical strength SCC reduces the first fracture load from 8.3 % to 15.5 % and the ultimate load from 3.98 % to 12.15 %. The experimental results indicated that the change of No. of balls for high strength SCC decreases the first crack load from 2.5% to 8.92% and decreases the ultimate load from 5.95% to 16.19%. Also increase the No. of balls, it notes reduced the slab stiffness.

Downloads

Download data is not yet available.

References

Mr. Devyanshu Jain, Miss. Nidhi Gupta." Review Paper: Study on A Comparative Study Ofbubble Deck Slab and Conventional Deck Slab", Department of Civil Engineering, RKDF Institute of Science & Technology (India), Vol. No. 5, Issue No.03, March 2017.

Al- Azzawiand and Omar." A State Of The Art Review On Reinforced Concrete Voided Slabs",Al-Nahrian University, Baghdad, Iraq, VOL. 13, NO. 5, MARCH 2018.

“Bubble Deck Engineering Design and Properties Overview”. BubbleDeck Voided Flat Slab Solution–Technical Manual and Documents, www.BubbleDeck.com, (2007).

A.C. Fuchs: “Bubble Deck Floor System - An Innovative Sustainable Floor System”. Bubble Deck Netherlands B.V., AD Leiden, the Netherlands, (2009).

“Lighter Flat Slab Structures with Bubble Deck”. Product Information, www.BubbleDeck-UK.com, (2006).

Bubble Deck, United Kingdom: “Bubble Deck Structure Solutions”. www.BubbleDeck-UK.com, (2008).

Ibrahim A. M., Ali N. K. and Salman W. D. “Flexural capacities of reinforced concrete two-way bubble deck slabs of plastic spherical voids”, Diyala Journal of Engineering Sciences, ISSN 1999-8716, Vol. 06, No. 02, June 2013.

Yasseen, D. "Serviceability and Load Capacity of One-Way Prestressed Concrete Slabs with Internal Spherical Voids", Ph.D. Thesis, University of Baghdad, 2014.

Ahmed Q. W. "Punching Shear Behavior Of Bubbled Reinforced Concrete Slabs", Diyala Journal of Engineering Sciences, ISSN 1999-8716, Vol. 09, No. 01, pp. 55-66, March 2016. DOI: https://doi.org/10.24237/djes.2016.09105

Mutashar S. H. " Flexural Behavior of Sustainable Reactive Powder Concrete Voided Slabs", M.Sc. Thesis, College of Engineering, Al-Mustansiriayah University, February 2017.

Mahmood M. R. K. and Dawood M. B. "Punching Shear Behavior of Continuous Bubbled Reinforced Reactive Powder Concrete Slab", Journal of Babylon University/Engineering Sciences/No. (1)/Vol. (25), 2017.

Harba, I. S. I. and Hameed, M. A. "Shear Behavior of Self Compacted Reinforced Concrete Two Way Bubble Slabs", International Journal of Civil Engineering and Technology (IJCIET), Volume 9, Issue 12, December 2018, pp. 1117–1127.

Ibrahim A. M., Ismael M. A. and Abdul Hussein H. A. S. " The Effect of Balls Shapes and Spacing on Structural Behaviour of Reinforced Concrete Bubbled Slabs", Journal of Engineering and Sustainable Development, Vol. 23, No.02, March 2019 ISSN 2520-0917. DOI: https://doi.org/10.31272/jeasd.23.2.5

Yaagoob A. H. and Harba I. S. I. "Behavior of Self Compacting Reinforced Concrete One Way Bubble Deck Slab", Al-Nahrain Journal for Engineering Sciences NJES 23(1)1-11, 2020. DOI: https://doi.org/10.29194/NJES.23010001

(15) Iraqi Specification, No. 5/1984,"Portland Cement”, Ministry of Planning /Central Organization for Standardization and Control Quality.

Iraqi Specification, No. 45/1984"Aggregate from Natural Sources for Concrete and Construction. Ministry of Planning /Central Organization for Standardization and Control Quality.

Ramachandran, V.S., "Concrete Admixtures Handbook-Properties, Science, and Technology", 2nd Edition, William Andrew Publishing, ISBN-8155-1373-9,1995, p. 121.

ASTM C494M-1999a, "Standard specification for Chemical Admixtures for Concrete", Vol. 4.2,1999, p.9.

ASTM A615/615M-05a, " standard specification for Deformed and Plain Carbon Structural Steel Bars for Concrete Reinforcement", Annual book of ASTM standards, Vol.01.02,2005.

EFNARC: European Federation Dedicated to Specialist Construction Chemicals and Concrete Systems, "Specifications and Guidelines for Self-Compacting concrete", Association House, 99 west street, Farnham, Surrey, U.K, 2002, 32p.

ASTM C 192/C 192M-02. (2002) Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory. ASTM Standard.