Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes

Mamush Teklie; Tesfaye Alemu; Beka Benti

doi:doi:10.11648/j.es.20200504.11

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Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes

Mamush Teklie, Tesfaye Alemu, Beka Benti

Published in Engineering Science (Volume 5, Issue 4)

Received: 1 October 2020 Accepted: 2 November 2020 Published: 11 December 2020

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Abstract

Voided slab construction is a way of effectively removing concrete from middle section of a RC slab which has not a structural function, thereby reducing structural dead weight. Voided slab construction has advantages such as reducing self-weight, Cost efficiencies and fast Construction. However, floor stiffness of voided RC slab is less than its solid counterpart and there is gap in literature about structural behaviors of voided RC slabs. This research work presents experimental and numerical investigations of voided RC slab. Six solid and voided RC slab specimens of size 800mmx300mmx200mm were casted and tested until failure under one-point load. Also, leveraging advantages of FEA, effect of influential variables such as void size, loading type, concrete compressive strength, and effect of top reinforcement were thoroughly studied. Experimental test results indicated as compared to control solid RC slab, 60mm diameter paper tube voided RC slab exhibited 12%, 15.54%, 25.50%, 14.64% and 6.71% loss in strength, cracking load, stiffness, ductility, and toughness respectively where as for 90mm diameter paper tube voided RC slab respective values were 20%, 19.87%, 38.80%, 25.50% and 12%. Also, as void size increased from 60mm to 90mm, voided slab failure mode changed from flexural to shear. Finally, FEA, ACI 318M-19 and EC2 codes showed good agreement with experimental results.

Published in	Engineering Science (Volume 5, Issue 4)
DOI	10.11648/j.es.20200504.11
Page(s)	45-56
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Voided RC Slab, Ductility, Floor Stiffness, Finite Element Analysis

References

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[2]	Pajari Matti. 2004. Pure Torsion Tests on Single Hollow Core Slabs. Espoo VTT Tiedotteita, Research Notes 2273, pp. 29-28.
[3]	Mahdi A. S. 2011. Nonlinear Finite Element Analysis of Reinforced Concrete Hollow-core Slabs. MSc. Thesis, Al-Nahrain University/Civil Engineering Department.
[4]	Rahman M. K., M. H. Baluch, M. K. Said, M. A. Shazali. 2012. Flexural and Shear Strength of Pre-Stressed Precast Hollow-Core Slabs. Arabian Journal for Science and Engineering. 37 (2): 443-455.
[5]	Haruna S. I. 2014, “Flexural behavior of precast pre-stressed concrete hollow core slabs with cast-in-place concrete topping”, M. S. Dissertation, Atılım University, Turkey.
[6]	Lee, D. H., Park, M., Oh, J., Kim, K. S., Im, J. and Seo, S. (2014), “Web-shear capacity of pre-Stressed hollow core slab unit with consideration on the minimum shear reinforcement requirement”, Comput. Concrete, 14 (3), 211-231.
[7]	Ibrahim I. S., K. S. Elliott, b., Abdullah, R., Kueh A. B. H., Sarbini N. N. 2016. Experimental Study on the Shear Behavior of Precast Concrete Hollow Core Slabs with Concrete Topping. Engineering Structures. 125: 80-90.
[8]	Abed S. A. 2016. Flexural Behavior of One Way Reinforced Concrete Hollow- Core Slabs under Monotonic Loading. MSc. Thesis, Al-Nahrain University/Civil Engineering Department.
[9]	Foubert S., Mahmoud K. and El-Salakawy E. 2016. Behavior of Pre-Stressed Hollow-Core Slabs Strengthened in Flexure with Near-Surface Mounted Carbon Fiber-. Reinforced Polymer Reinforcement. ASCE, Journal of Composites for Construction. 20 (6).
[10]	Wariyatno N. G., and Haryanto Y. and Sudiboyo G. H. 2017. Flexural behavior of precast hollow core slab using PVC pipe and Styrofoam with different reinforcement. Procedia engineering. 171: 909-916.
[11]	ACI318-14.2014. Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary. American Concrete Institute, Detroit, U.S.A.
[12]	EN 1992-1-1, Eurocode 2: Design of Concrete Structures Part 1-1–General Rules and Rules for Buildings, London Br. Stand. Inst., 2004.
[13]	ANSYS19.0 Inc. 2019. ANSYS User’s Manual. SAS IP, Inc., Version 19.0, U.S.A.
[14]	Mansour F. R., Abu BakarS., Ibrahim, I. S., MarsonoA. Marabi B. 2015. Flexural performance of a precast concrete slab with steel fiber concrete topping. Construction and Building Materials. 75: 112120.
[15]	PCI Manual for the Design of Hollow Core Slabs and Walls Third Edition - Electronic Version.

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APA Style

Mamush Teklie, Tesfaye Alemu, Beka Benti. (2020). Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes. Engineering Science, 5(4), 45-56. https://doi.org/10.11648/j.es.20200504.11

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ACS Style

Mamush Teklie; Tesfaye Alemu; Beka Benti. Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes. Eng. Sci. 2020, 5(4), 45-56. doi: 10.11648/j.es.20200504.11

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AMA Style

Mamush Teklie, Tesfaye Alemu, Beka Benti. Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes. Eng Sci. 2020;5(4):45-56. doi: 10.11648/j.es.20200504.11

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@article{10.11648/j.es.20200504.11,
  author = {Mamush Teklie and Tesfaye Alemu and Beka Benti},
  title = {Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes},
  journal = {Engineering Science},
  volume = {5},
  number = {4},
  pages = {45-56},
  doi = {10.11648/j.es.20200504.11},
  url = {https://doi.org/10.11648/j.es.20200504.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.es.20200504.11},
  abstract = {Voided slab construction is a way of effectively removing concrete from middle section of a RC slab which has not a structural function, thereby reducing structural dead weight. Voided slab construction has advantages such as reducing self-weight, Cost efficiencies and fast Construction. However, floor stiffness of voided RC slab is less than its solid counterpart and there is gap in literature about structural behaviors of voided RC slabs. This research work presents experimental and numerical investigations of voided RC slab. Six solid and voided RC slab specimens of size 800mmx300mmx200mm were casted and tested until failure under one-point load. Also, leveraging advantages of FEA, effect of influential variables such as void size, loading type, concrete compressive strength, and effect of top reinforcement were thoroughly studied. Experimental test results indicated as compared to control solid RC slab, 60mm diameter paper tube voided RC slab exhibited 12%, 15.54%, 25.50%, 14.64% and 6.71% loss in strength, cracking load, stiffness, ductility, and toughness respectively where as for 90mm diameter paper tube voided RC slab respective values were 20%, 19.87%, 38.80%, 25.50% and 12%. Also, as void size increased from 60mm to 90mm, voided slab failure mode changed from flexural to shear. Finally, FEA, ACI 318M-19 and EC2 codes showed good agreement with experimental results.},
 year = {2020}
}

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TY  - JOUR
T1  - Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes
AU  - Mamush Teklie
AU  - Tesfaye Alemu
AU  - Beka Benti
Y1  - 2020/12/11
PY  - 2020
N1  - https://doi.org/10.11648/j.es.20200504.11
DO  - 10.11648/j.es.20200504.11
T2  - Engineering Science
JF  - Engineering Science
JO  - Engineering Science
SP  - 45
EP  - 56
PB  - Science Publishing Group
SN  - 2578-9279
UR  - https://doi.org/10.11648/j.es.20200504.11
AB  - Voided slab construction is a way of effectively removing concrete from middle section of a RC slab which has not a structural function, thereby reducing structural dead weight. Voided slab construction has advantages such as reducing self-weight, Cost efficiencies and fast Construction. However, floor stiffness of voided RC slab is less than its solid counterpart and there is gap in literature about structural behaviors of voided RC slabs. This research work presents experimental and numerical investigations of voided RC slab. Six solid and voided RC slab specimens of size 800mmx300mmx200mm were casted and tested until failure under one-point load. Also, leveraging advantages of FEA, effect of influential variables such as void size, loading type, concrete compressive strength, and effect of top reinforcement were thoroughly studied. Experimental test results indicated as compared to control solid RC slab, 60mm diameter paper tube voided RC slab exhibited 12%, 15.54%, 25.50%, 14.64% and 6.71% loss in strength, cracking load, stiffness, ductility, and toughness respectively where as for 90mm diameter paper tube voided RC slab respective values were 20%, 19.87%, 38.80%, 25.50% and 12%. Also, as void size increased from 60mm to 90mm, voided slab failure mode changed from flexural to shear. Finally, FEA, ACI 318M-19 and EC2 codes showed good agreement with experimental results.
VL  - 5
IS  - 4
ER  -

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Author Information

Mamush Teklie

Department of Civil Engineering, College of Architecture and Civil Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia
Tesfaye Alemu

Department of Civil Engineering, College of Architecture and Civil Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia
Beka Benti

Department of Water Resources Engineering, School of Civil Engineering and Architecture, Adama Science and Technology University, Adama, Ethiopia

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Plain Text BibTeX RIS

APA Style

Mamush Teklie, Tesfaye Alemu, Beka Benti. (2020). Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes. Engineering Science, 5(4), 45-56. https://doi.org/10.11648/j.es.20200504.11

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ACS Style

Mamush Teklie; Tesfaye Alemu; Beka Benti. Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes. Eng. Sci. 2020, 5(4), 45-56. doi: 10.11648/j.es.20200504.11

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AMA Style

Mamush Teklie, Tesfaye Alemu, Beka Benti. Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes. Eng Sci. 2020;5(4):45-56. doi: 10.11648/j.es.20200504.11

Copy | Download

@article{10.11648/j.es.20200504.11,
  author = {Mamush Teklie and Tesfaye Alemu and Beka Benti},
  title = {Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes},
  journal = {Engineering Science},
  volume = {5},
  number = {4},
  pages = {45-56},
  doi = {10.11648/j.es.20200504.11},
  url = {https://doi.org/10.11648/j.es.20200504.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.es.20200504.11},
  abstract = {Voided slab construction is a way of effectively removing concrete from middle section of a RC slab which has not a structural function, thereby reducing structural dead weight. Voided slab construction has advantages such as reducing self-weight, Cost efficiencies and fast Construction. However, floor stiffness of voided RC slab is less than its solid counterpart and there is gap in literature about structural behaviors of voided RC slabs. This research work presents experimental and numerical investigations of voided RC slab. Six solid and voided RC slab specimens of size 800mmx300mmx200mm were casted and tested until failure under one-point load. Also, leveraging advantages of FEA, effect of influential variables such as void size, loading type, concrete compressive strength, and effect of top reinforcement were thoroughly studied. Experimental test results indicated as compared to control solid RC slab, 60mm diameter paper tube voided RC slab exhibited 12%, 15.54%, 25.50%, 14.64% and 6.71% loss in strength, cracking load, stiffness, ductility, and toughness respectively where as for 90mm diameter paper tube voided RC slab respective values were 20%, 19.87%, 38.80%, 25.50% and 12%. Also, as void size increased from 60mm to 90mm, voided slab failure mode changed from flexural to shear. Finally, FEA, ACI 318M-19 and EC2 codes showed good agreement with experimental results.},
 year = {2020}
}

Copy | Download

TY  - JOUR
T1  - Behaviors of Reinforced Concrete Slab Voided by Circular Paper Tubes
AU  - Mamush Teklie
AU  - Tesfaye Alemu
AU  - Beka Benti
Y1  - 2020/12/11
PY  - 2020
N1  - https://doi.org/10.11648/j.es.20200504.11
DO  - 10.11648/j.es.20200504.11
T2  - Engineering Science
JF  - Engineering Science
JO  - Engineering Science
SP  - 45
EP  - 56
PB  - Science Publishing Group
SN  - 2578-9279
UR  - https://doi.org/10.11648/j.es.20200504.11
AB  - Voided slab construction is a way of effectively removing concrete from middle section of a RC slab which has not a structural function, thereby reducing structural dead weight. Voided slab construction has advantages such as reducing self-weight, Cost efficiencies and fast Construction. However, floor stiffness of voided RC slab is less than its solid counterpart and there is gap in literature about structural behaviors of voided RC slabs. This research work presents experimental and numerical investigations of voided RC slab. Six solid and voided RC slab specimens of size 800mmx300mmx200mm were casted and tested until failure under one-point load. Also, leveraging advantages of FEA, effect of influential variables such as void size, loading type, concrete compressive strength, and effect of top reinforcement were thoroughly studied. Experimental test results indicated as compared to control solid RC slab, 60mm diameter paper tube voided RC slab exhibited 12%, 15.54%, 25.50%, 14.64% and 6.71% loss in strength, cracking load, stiffness, ductility, and toughness respectively where as for 90mm diameter paper tube voided RC slab respective values were 20%, 19.87%, 38.80%, 25.50% and 12%. Also, as void size increased from 60mm to 90mm, voided slab failure mode changed from flexural to shear. Finally, FEA, ACI 318M-19 and EC2 codes showed good agreement with experimental results.
VL  - 5
IS  - 4
ER  -

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