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Mechanical properties of self-compacting coconut shell concrete blended with fly ash

  • I. H. Adebakin
  • K. Gunasekaran
  • R. Annadurai
Original Paper
  • 8 Downloads

Abstract

The focus of this study is on the development of self-compacting lightweight concrete using local waste materials and investigation of its mechanical properties. Discarded fresh coconut shells were crushed mechanically and used as coarse aggregate with fly ash (FA) as partial replacement of Portland cement at 15% and 20% replacement levels by weight. Slump flow, T500, V-funnel, L-box, and wet sieve segregation tests were used to evaluate the self-compactibility of the developed mixes. For comparison purpose, self-compacting conventional concrete was also produced and tested for all the parameters experimentally. For the developed self-compacting concrete mixes, mechanical properties such as compressive, flexural, splitting tensile strengths, and impact resistance were tested and compared with the theoretical values as recommended by the standards and the literature references. Compressive, flexural, and splitting tensile strengths of 21.20 N/mm2, 4.50 N/mm2, and 2.56 N/mm2 with impact energy of 528.61 kN-mm were achieved for 15% FA and 20.10 N/mm2, 4.00 N/mm2, and 2. 52 N/mm2 with impact energy of 467.61 kN-mm achieved for 20% FA, respectively. This shows that the experimental values of all the parameters are high in performance compared to the theoretical values, and hence, coconut shell aggregate blended with fly ash is a promising local technology for structural lightweight concrete usage.

Keywords

Coconut Shell Aggregate Self-compacting concrete Mechanical properties 

Notes

Acknowledgements

The authors would like to thank the management of SRM Institute of Science and Technology for providing technical support and all those who were directly or indirectly involved in this study. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. However, the support of Nigeria Tertiary Education Trust Fund (TET fund) and Yaba College of Technology, Nigeria, in sponsoring Mr. I. H. Adebakin for his Ph.D. program at SRM Institute of Science and Technology is greatly appreciated.

Compliance with ethical standards

Conflict of interest

It is declare that the authors have no conflict of interest.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Department of Civil Engineering, Faculty of Engineering and TechnologySRM Institute of Science and TechnologyKattankulathurIndia

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