The results of an experimental investigation of round concrete columns confined by a wound basalt filament yarn are presented. Basalt is an attractive material for strengthening purposes due to its low cost coupled with a good mechanical performance, especially at high temperatures. It is shown that the basalt FRP confinement provides a considerable strengthening effect. The winding equipment employed in this study has the ability to set a desired pretension force of the yarn and thereby to produce a prestressed confinement. It is found that the prestressed confinement notably delays the onset of intense internal cracking of concrete.
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Acknowledgments
This work was funded by ESF via project 2009/0209/1DP/1.1.1.2.0/09/APIA/VIAA/114. The authors express gratitude to R. Apinis, V.Skruls, and U. Vilks for assistance.
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 48, No. 5, pp. 783-792, September-October, 2012.
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Ciniņa, I., Zīle, E. & Zīle, O. Mechanical behavior of concrete columns confined by basalt FRP windings. Mech Compos Mater 48, 539–546 (2012). https://doi.org/10.1007/s11029-012-9298-y
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DOI: https://doi.org/10.1007/s11029-012-9298-y