Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
In-Site Quality Control of the Tensile Strength of Glass Fiber-Reinforced Polymer (GFRP) Bent Bars
The current study presents the results of a collaborative research project between Quebec’s Ministry of Transportation and the University of Sherbrooke to develop a new test methodology for evaluating the tensile strength of Glass Fiber-Reinforced-Polymer (GFRP) bent bars at the bends. The proposed testing procedure aims at facilitating the in-site examination of the bent bars’ strength for quality control. The testing allows for examining the tensile strength and the strength reduction factor of a wide variety of GFRP shapes within a maximum of three days. The procedure involved embedding a single L-shape GFRP bar in a concrete block and applying tensile force on the straight portion of the bar until failure. Fast-setting self-consolidated concrete (SCC) capable of achieving a concrete compressive strength of 48 MPa after 36 h was used to cast the concrete block. Another set of concrete blocks was prepared using normal-strength concrete (NSC) and compared to that cast using SCC. The tensile test results were validated against that obtained by the typical B.5 testing recommended by the ASTM D7914 (2017) and CSA S807 (2015). GFRP bent bars of size #5 (15.9 mm) produced by two different manufacturers were used in the validation. The comparison resulted in a 4 to 7% difference in the tensile strength at the bends between the two methods using NSC or SCC.
In-Site Quality Control of the Tensile Strength of Glass Fiber-Reinforced Polymer (GFRP) Bent Bars
The current study presents the results of a collaborative research project between Quebec’s Ministry of Transportation and the University of Sherbrooke to develop a new test methodology for evaluating the tensile strength of Glass Fiber-Reinforced-Polymer (GFRP) bent bars at the bends. The proposed testing procedure aims at facilitating the in-site examination of the bent bars’ strength for quality control. The testing allows for examining the tensile strength and the strength reduction factor of a wide variety of GFRP shapes within a maximum of three days. The procedure involved embedding a single L-shape GFRP bar in a concrete block and applying tensile force on the straight portion of the bar until failure. Fast-setting self-consolidated concrete (SCC) capable of achieving a concrete compressive strength of 48 MPa after 36 h was used to cast the concrete block. Another set of concrete blocks was prepared using normal-strength concrete (NSC) and compared to that cast using SCC. The tensile test results were validated against that obtained by the typical B.5 testing recommended by the ASTM D7914 (2017) and CSA S807 (2015). GFRP bent bars of size #5 (15.9 mm) produced by two different manufacturers were used in the validation. The comparison resulted in a 4 to 7% difference in the tensile strength at the bends between the two methods using NSC or SCC.
In-Site Quality Control of the Tensile Strength of Glass Fiber-Reinforced Polymer (GFRP) Bent Bars
Lecture Notes in Civil Engineering
Benmokrane, Brahim (Herausgeber:in) / Mohamed, Khaled (Herausgeber:in) / Farghaly, Ahmed (Herausgeber:in) / Mohamed, Hamdy (Herausgeber:in) / Mohamed, Khaled (Autor:in) / Nazair, Claude (Autor:in) / Loranger, Marc-Antoine (Autor:in) / Benmokrane, Brahim (Autor:in)
8th International Conference on Advanced Composite Materials in Bridges and Structures ; Kapitel: 47 ; 405-412
27.09.2022
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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