Long-Term Performance of Pultruded Basalt Fiber Reinforced Polymer Profiles under Acidic Conditions
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 6
Abstract
This study experimentally investigated the degradation of tensile properties of basalt fiber reinforced polymer (BFRP) profiles under acidic conditions. The effects of the temperature, pH value, and BFRP thickness were analyzed by means of accelerated aging. The surface conditions were also observed by a scanning electron microscope. The long-term acid resistance of BFRP was studied based on the Arrhenius model. The results showed that BFRP profiles have superior durability in acidic solutions. Under the condition of , BFRP showed a strength retention rate of 81.6% and almost no changes in tensile modulus. The degradation was attributed to the fracture of the interface between resin and fiber, caused by physical and chemical interactions in the acidic solution. Subsequently, a prediction model of the long-term degradation was built, and the relationship of the service years and strength reduction, considering different pH values and working temperatures, was established for durability design.
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Acknowledgments
The authors gratefully acknowledge the financial support provided by the National Key Research and Development Program of China (2017YFC0703000), the National Science Foundation of China (51678139), Key Consulting Project of Chinese Academy of Engineering (2016-XZ-13). Jiangsu GMV Co., Ltd. is also gratefully acknowledged for providing FRP profiles.
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©2018 American Society of Civil Engineers.
History
Received: Mar 11, 2017
Accepted: Nov 28, 2017
Published online: Mar 29, 2018
Published in print: Jun 1, 2018
Discussion open until: Aug 29, 2018
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