Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Acoustic Emission Performances of Stressed-GFRP Bars Embedded in Concrete under Accelerated Aging Conditions
This research presents test results of an experimental study to investigate tensile strength degradation of stressed-GFRP bars embedded in concrete after accelerated aging. The experimental program included twelve tensile specimens with two different types of GFRP bars [Wrapped surface (herein, Type-A) and Sand-coated surface (herein, Type-B)]. Specimens were placed in a weathering chamber [46°C (115°F) and RH: 80%] with a sustained load. In addition, acoustic emission as a nondestructive evaluation was performed to investigate the degradation of GFRP bars. Results revealed that the residual tensile strengths were about 85.5 and 82.5% (reduction by 14.5 and 17.5%) after 300 days of exposure, respectively, for Type-A and Type-B bars. This paper devotes attention to the acoustic emission performance on the aged GFRP tensile curves. Test results indicated that changes in AE parameters due to aging could be identified as strength/stiffness degradation. AE parameters also showed a good correlation with the mechanical responses of test specimens after accelerated aging.
Acoustic Emission Performances of Stressed-GFRP Bars Embedded in Concrete under Accelerated Aging Conditions
This research presents test results of an experimental study to investigate tensile strength degradation of stressed-GFRP bars embedded in concrete after accelerated aging. The experimental program included twelve tensile specimens with two different types of GFRP bars [Wrapped surface (herein, Type-A) and Sand-coated surface (herein, Type-B)]. Specimens were placed in a weathering chamber [46°C (115°F) and RH: 80%] with a sustained load. In addition, acoustic emission as a nondestructive evaluation was performed to investigate the degradation of GFRP bars. Results revealed that the residual tensile strengths were about 85.5 and 82.5% (reduction by 14.5 and 17.5%) after 300 days of exposure, respectively, for Type-A and Type-B bars. This paper devotes attention to the acoustic emission performance on the aged GFRP tensile curves. Test results indicated that changes in AE parameters due to aging could be identified as strength/stiffness degradation. AE parameters also showed a good correlation with the mechanical responses of test specimens after accelerated aging.
Acoustic Emission Performances of Stressed-GFRP Bars Embedded in Concrete under Accelerated Aging Conditions
Park, Yeonho (Autor:in) / Ramirez, Guillermo (Autor:in) / Abolmaali, Ali (Autor:in) / Kim, Young Hoon (Autor:in)
AEI 2015 ; 2015 ; Milwaukee, Wisconsin
AEI 2015 ; 248-258
17.02.2015
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Effect of aging on bond of GFRP bars embedded in concrete
| Online Contents | 2010
Durability of GFRP Rebars in Simulated Concrete Solutions under Accelerated Aging Conditions
| Online Contents | 2011
Durability of GFRP Rebars in Simulated Concrete Solutions under Accelerated Aging Conditions
| British Library Online Contents | 2011
Fatigue behaviour of GFRP bars embedded in concrete
| British Library Conference Proceedings | 1997
Fatigue behaviour of GFRP bars embedded in concrete
| British Library Conference Proceedings | 1997