Journal of Civil Engineering and Construction Technology
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Article Number - D848AE457695


Vol.7(2), pp. 8-19 , March 2016
DOI: 10.5897/JCECT2015.0394
ISSN: 2141-2634



Full Length Research Paper

Shear behaviour of palm kernel shell reinforced concrete beams without shear Reinforcement: Influence of beam depth and tension steel



A. Acheampong*
  • A. Acheampong*
  • Department of Building Technology, Kwame Nkrumah University of Science and Technology (KNUST), Ghana.
  • Google Scholar
C. K. Kankam
  • C. K. Kankam
  • Department of Civil Engineering, Kwame Nkrumah University of Science and Technology (KNUST), Ghana.
  • Google Scholar
J. Ayarkwa
  • J. Ayarkwa
  • Department of Building Technology, Kwame Nkrumah University of Science and Technology (KNUST), Ghana.
  • Google Scholar







 Received: 03 December 2015  Accepted: 03 March 2016  Published: 31 March 2016

Copyright © 2016 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


This study investigated the influence of beam depth with varying longitudinal reinforcement without shear reinforcement. Size effect, which is described here in as the decrease in shear strength with the increase in the depth of members, is not evaluated sufficiently enough. To this end, fifteen palm kernel shell (PKS) reinforced concrete beams varying from 150 to 300 mm were tested to investigate their size effects on ultimate shear capacity and failure modes. Test variables were longitudinal reinforcement ratio (ρw varying from 1 to 2%) and effective depth of beams (varying from 120 to 265 mm) with average compressive strength (fcu) = 30.3 MPa and shear span to effective depth (av/d) = 2.5. For the range of variables tested, the test results were compared with the strengths predicted by the ACI 318-08 and BS 8110 with and without reduction factors. All tested beams failed in shear failure modes and were influenced by the beam depth and amount of longitudinal reinforcement. The PKS beams were found to develop sufficient strength after diagonal cracking to continuously transfer loads until failure.

Key words: Palm kernel shell concrete, size effects, longitudinal reinforcement, shear strength, ACI 318-08, BS8110.

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APA Acheampong, A., Kankam, C. K., & Ayarkwa, J. (2016). Shear behaviour of palm kernel shell reinforced concrete beams without shear Reinforcement: Influence of beam depth and tension steel. Journal of Civil Engineering and Construction Technology, 7(2), 8-19.
Chicago  A. Acheampong, C. K. Kankam and J. Ayarkwa. "Shear behaviour of palm kernel shell reinforced concrete beams without shear Reinforcement: Influence of beam depth and tension steel." Journal of Civil Engineering and Construction Technology 7, no. 2 (2016): 8-19.
MLA  A. Acheampong, C. K. Kankam and J. Ayarkwa. "Shear behaviour of palm kernel shell reinforced concrete beams without shear Reinforcement: Influence of beam depth and tension steel." Journal of Civil Engineering and Construction Technology 7.2 (2016): 8-19.
   
DOI 10.5897/JCECT2015.0394
URL http://academicjournals.org/journal/JCECT/article-abstract/D848AE457695

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