Use of BFRP Wrap for Rehabilitation of Pipeline in Bending with Various Corrosion Depths
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 11, Issue 1
Abstract
The feasibility and effectiveness of basalt fiber reinforced polymer (BFRP) wrap in the rehabilitation of corroded pipes under bending and internal pressure was investigated by using experimental tests and numerical analyses. The experimental program consisted of eight pipe specimens with diameter-to-thickness ratio (D/t) of 34.5 tested under four-point bending and internal pressure. Corrosion defects were simulated on specimens by reducing the wall thickness. The corroded specimens were repaired by using BFRP-composite wrap. The numerical modeling, conducted by using a commercially available program, studied the effect of the fiber orientation of BFRP wrap and the number of layers of BFRP wrap. The results indicated that increasing the amount of BFRP layers can successfully increase the bending capacity of the pipe, and there is an optimum thickness of BFRP fabric. When the findings of this study were compared to the current guidelines, it was found that this standard does not take the ovalization effect of in-plane bending into consideration.
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Acknowledgments
This research work was completed with the financial assistance received from Natural Sciences and Engineering Research Council of Canada (NSERC), located in Ottawa, Canada.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 11 • Issue 1 • February 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Sep 24, 2018
Accepted: Apr 2, 2019
Published online: Sep 18, 2019
Published in print: Feb 1, 2020
Discussion open until: Feb 18, 2020
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