Behavior of Glass Fiber-Reinforced Polymer Bar Coupons under Sustained Load and High Temperatures
Research presented herein is part of a program to study the effects of climate changes on fiber-reinforced polymer (FRP) reinforcement. This paper presents results of an experimental study on the tensile behavior of glass fiber-reinforced polymer (GFRP) bars under different loading and temperature c...
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description | Research presented herein is part of a program to study the effects of climate changes on fiber-reinforced polymer (FRP) reinforcement. This paper presents results of an experimental study on the tensile behavior of glass fiber-reinforced polymer (GFRP) bars under different loading and temperature conditions. In the conventional steady-state temperature tests, specimens were heated to a desired temperature, up to 250[degrees]C (482[degrees]F), and then loaded to failure. Tensile tests were also conducted under sustained constant stress or constant deformation conditions and subsequently heated to failure. The sustained stress levels varied from 40 to 90% of the bar strength at room temperature. Results showed that GFRP bars experienced approximately 60% reduction in strength at a steady-state temperature of 250[degrees]C (482[degrees]F). The bars subjected to 40% of room temperature strength and exposed to high temperatures resulting from situations such as sudden fire sustained the load for approximately 50 minutes. Keywords: glass fiber-reinforced polymer (GFRP) bars; high temperature; sustained loading; tensile strength; thermal degradation. |
doi_str_mv | 10.14359/51728188 |
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This paper presents results of an experimental study on the tensile behavior of glass fiber-reinforced polymer (GFRP) bars under different loading and temperature conditions. In the conventional steady-state temperature tests, specimens were heated to a desired temperature, up to 250[degrees]C (482[degrees]F), and then loaded to failure. Tensile tests were also conducted under sustained constant stress or constant deformation conditions and subsequently heated to failure. The sustained stress levels varied from 40 to 90% of the bar strength at room temperature. Results showed that GFRP bars experienced approximately 60% reduction in strength at a steady-state temperature of 250[degrees]C (482[degrees]F). The bars subjected to 40% of room temperature strength and exposed to high temperatures resulting from situations such as sudden fire sustained the load for approximately 50 minutes. Keywords: glass fiber-reinforced polymer (GFRP) bars; high temperature; sustained loading; tensile strength; thermal degradation.</description><identifier>ISSN: 0889-3241</identifier><identifier>EISSN: 0889-3241</identifier><identifier>EISSN: 1944-7361</identifier><identifier>DOI: 10.14359/51728188</identifier><language>eng</language><publisher>Farmington Hills: American Concrete Institute</publisher><subject>Bars ; Bars (Engineering) ; Climate change ; Climate effects ; Concrete ; Dynamic testing ; Fiber reinforced polymers ; Fibrous composites ; Filler materials ; Glass fiber reinforced plastics ; Heat ; High temperature ; Load ; Materials ; Mechanical properties ; Polymers ; Reinforced concrete ; Room temperature ; Steel pipes ; Stress ; Tensile strength ; Tensile tests ; Testing</subject><ispartof>ACI structural journal, 2021-03, Vol.118 (2), p.139-152</ispartof><rights>COPYRIGHT 2021 American Concrete Institute</rights><rights>Copyright American Concrete Institute Mar 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c296t-9d13b61dab069acdb91b6765cd7073b1c61cf7a100adbe3d33b7771c8e28c0093</citedby><cites>FETCH-LOGICAL-c296t-9d13b61dab069acdb91b6765cd7073b1c61cf7a100adbe3d33b7771c8e28c0093</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>Jahanzaib</creatorcontrib><creatorcontrib>Kharal, Zahra</creatorcontrib><creatorcontrib>Sheikh, Shamim A</creatorcontrib><title>Behavior of Glass Fiber-Reinforced Polymer Bar Coupons under Sustained Load and High Temperatures</title><title>ACI structural journal</title><description>Research presented herein is part of a program to study the effects of climate changes on fiber-reinforced polymer (FRP) reinforcement. This paper presents results of an experimental study on the tensile behavior of glass fiber-reinforced polymer (GFRP) bars under different loading and temperature conditions. In the conventional steady-state temperature tests, specimens were heated to a desired temperature, up to 250[degrees]C (482[degrees]F), and then loaded to failure. Tensile tests were also conducted under sustained constant stress or constant deformation conditions and subsequently heated to failure. The sustained stress levels varied from 40 to 90% of the bar strength at room temperature. Results showed that GFRP bars experienced approximately 60% reduction in strength at a steady-state temperature of 250[degrees]C (482[degrees]F). The bars subjected to 40% of room temperature strength and exposed to high temperatures resulting from situations such as sudden fire sustained the load for approximately 50 minutes. 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This paper presents results of an experimental study on the tensile behavior of glass fiber-reinforced polymer (GFRP) bars under different loading and temperature conditions. In the conventional steady-state temperature tests, specimens were heated to a desired temperature, up to 250[degrees]C (482[degrees]F), and then loaded to failure. Tensile tests were also conducted under sustained constant stress or constant deformation conditions and subsequently heated to failure. The sustained stress levels varied from 40 to 90% of the bar strength at room temperature. Results showed that GFRP bars experienced approximately 60% reduction in strength at a steady-state temperature of 250[degrees]C (482[degrees]F). The bars subjected to 40% of room temperature strength and exposed to high temperatures resulting from situations such as sudden fire sustained the load for approximately 50 minutes. Keywords: glass fiber-reinforced polymer (GFRP) bars; high temperature; sustained loading; tensile strength; thermal degradation.</abstract><cop>Farmington Hills</cop><pub>American Concrete Institute</pub><doi>10.14359/51728188</doi><tpages>14</tpages></addata></record> |
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subjects | Bars Bars (Engineering) Climate change Climate effects Concrete Dynamic testing Fiber reinforced polymers Fibrous composites Filler materials Glass fiber reinforced plastics Heat High temperature Load Materials Mechanical properties Polymers Reinforced concrete Room temperature Steel pipes Stress Tensile strength Tensile tests Testing |
title | Behavior of Glass Fiber-Reinforced Polymer Bar Coupons under Sustained Load and High Temperatures |
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