Compression Properties of Basalt Fiber–Reinforced Polymer Confined Coconut Shell Concrete
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 7
Abstract
The compression property of basalt fiber–reinforced polymer (BFRP) confined coconut shell (CS) concrete (CSC) was examined. The mix ratio of plain concrete as reference was fixed to be for water: cement: sand: stone aggregate by weight, while the stone aggregate was replaced with CS by 25%, 50%, 75%, and 100% in volume. Three groups of BFRP tubes, i.e., 2-, 4-, and 6-layer tubes, with a height of 200 mm and an inner diameter of 100 mm were built. An axial compression test was carried out to examine the strength and deformation capacity enhancement of concrete due to BFRP. Strains in the axial direction and hoop direction, axial force, and failure modes were discussed. Results indicated that the strength of CSC decreased quickly with an increase of the CS replacement ratio. However, with the confinement of the BFRP, the strength and deformation capacities were respectively improved by 1.39–2.65 times and 5.53–9.95 times in comparison with that of the plain concrete. The results also indicate that inclusion of CS changed the failure mode, i.e., BFRP confined plain concrete failed with a vertical crack and BFRP confined CSC was damaged with a horizontal crack.
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Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors gratefully acknowledge the partial support of this research by the National Key Research and Development Program of China under Grant No. 2016YFC0701100, the National Natural Science Foundation of China under Grant Nos. 51808270 and 51808129, and the Tianjin Basic Research Program under Grant Nos. 17JCYBJC42500, 19JCTPJC53500, and 17YFZCSF01140. The authors also want to thank the China Scholarship Council for the scholarship to enable the first author to have a yearlong research stay at the University of Auckland.
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 7 • July 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: May 9, 2020
Accepted: Dec 10, 2020
Published online: Apr 26, 2021
Published in print: Jul 1, 2021
Discussion open until: Sep 26, 2021
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