Behavior of Hybrid Reinforced Concrete Bridge Decks under Static and Fatigue Loading
This paper presents a new bridge deck reinforcement alternative using hybrid reinforced concrete (Hybrid) consisting of Glass Fiber Reinforced Polymer (GFRP) rebar and alkali-resistant fiberglass composite macrofibers added to the concrete mixture. Fiberglass composite macrofibers are a miniaturized...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/14/23/5153 |
| _version_ | 1797462315266736128 |
|---|---|
| author | Jared W. McRory Fray F. Pozo-Lora Zachary Benson Raed Tawadrous Marc Maguire |
| author_facet | Jared W. McRory Fray F. Pozo-Lora Zachary Benson Raed Tawadrous Marc Maguire |
| author_sort | Jared W. McRory |
| collection | DOAJ |
| description | This paper presents a new bridge deck reinforcement alternative using hybrid reinforced concrete (Hybrid) consisting of Glass Fiber Reinforced Polymer (GFRP) rebar and alkali-resistant fiberglass composite macrofibers added to the concrete mixture. Fiberglass composite macrofibers are a miniaturized GFRP reinforcing bar that is a composite of resin and glass fibers. An experimental testing program and analytical modeling were conducted to evaluate the structural performance at the service and ultimate limit states. Thirteen full-scale bridge deck specimens were constructed and tested under static and fatigue loading. The fatigue loading was applied up to two million cycles at a frequency of 4 Hz. Post-fatigue, the specimens were tested to failure to compare pre-and post-fatigue behavior. Simplified and moment-curvature analytical models were used to predict the specimens’ flexural strength at the ultimate level, and both were found to be accurate for predicting pre- and post-fatigue strength. Deflection and crack width were monitored throughout the fatigue loading, and these values were compared to the recommended AASHTO LRFD serviceability limits. Testing and analytical results showed that the Hybrid deck is a viable alternative to steel-reinforced and GFRP-reinforced bridge decks for flexural behavior. The service and ultimate level behavior of each bridge deck type was adequate as compared to the AASHTO LRFD service limits. The exceptional post-peak energy absorption demonstrated by the Hybrid adds ductility to previously elastic GFRP reinforced sections. |
| first_indexed | 2024-03-09T17:34:48Z |
| format | Article |
| id | doaj.art-5ad9de329a504c66b925d4d78fa2230d |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T17:34:48Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-5ad9de329a504c66b925d4d78fa2230d2023-11-24T11:59:16ZengMDPI AGPolymers2073-43602022-11-011423515310.3390/polym14235153Behavior of Hybrid Reinforced Concrete Bridge Decks under Static and Fatigue LoadingJared W. McRory0Fray F. Pozo-Lora1Zachary Benson2Raed Tawadrous3Marc Maguire4Engineer, ARW Engineers, Ogden, UT 84404, USAInstructor, Civil & Environmental Engineering, College of Science and Engineering, Santo Domingo Campus, Pontifical Catholic University Mother and Teacher, Santo Domingo 10108, Dominican RepublicGraduate Researcher, Utah State University, Logan, UT 84322, USASenior Engineer, EConstruct, Orlando, FL 32817, USADurham School of Architectural Engineering and Construction, University of Nebraska-Lincoln, Omaha, NE 68588, USAThis paper presents a new bridge deck reinforcement alternative using hybrid reinforced concrete (Hybrid) consisting of Glass Fiber Reinforced Polymer (GFRP) rebar and alkali-resistant fiberglass composite macrofibers added to the concrete mixture. Fiberglass composite macrofibers are a miniaturized GFRP reinforcing bar that is a composite of resin and glass fibers. An experimental testing program and analytical modeling were conducted to evaluate the structural performance at the service and ultimate limit states. Thirteen full-scale bridge deck specimens were constructed and tested under static and fatigue loading. The fatigue loading was applied up to two million cycles at a frequency of 4 Hz. Post-fatigue, the specimens were tested to failure to compare pre-and post-fatigue behavior. Simplified and moment-curvature analytical models were used to predict the specimens’ flexural strength at the ultimate level, and both were found to be accurate for predicting pre- and post-fatigue strength. Deflection and crack width were monitored throughout the fatigue loading, and these values were compared to the recommended AASHTO LRFD serviceability limits. Testing and analytical results showed that the Hybrid deck is a viable alternative to steel-reinforced and GFRP-reinforced bridge decks for flexural behavior. The service and ultimate level behavior of each bridge deck type was adequate as compared to the AASHTO LRFD service limits. The exceptional post-peak energy absorption demonstrated by the Hybrid adds ductility to previously elastic GFRP reinforced sections.https://www.mdpi.com/2073-4360/14/23/5153bridge decksGFRP reinforcementmacrofibersfatigue loadingultimate strengthserviceability |
| spellingShingle | Jared W. McRory Fray F. Pozo-Lora Zachary Benson Raed Tawadrous Marc Maguire Behavior of Hybrid Reinforced Concrete Bridge Decks under Static and Fatigue Loading Polymers bridge decks GFRP reinforcement macrofibers fatigue loading ultimate strength serviceability |
| title | Behavior of Hybrid Reinforced Concrete Bridge Decks under Static and Fatigue Loading |
| title_full | Behavior of Hybrid Reinforced Concrete Bridge Decks under Static and Fatigue Loading |
| title_fullStr | Behavior of Hybrid Reinforced Concrete Bridge Decks under Static and Fatigue Loading |
| title_full_unstemmed | Behavior of Hybrid Reinforced Concrete Bridge Decks under Static and Fatigue Loading |
| title_short | Behavior of Hybrid Reinforced Concrete Bridge Decks under Static and Fatigue Loading |
| title_sort | behavior of hybrid reinforced concrete bridge decks under static and fatigue loading |
| topic | bridge decks GFRP reinforcement macrofibers fatigue loading ultimate strength serviceability |
| url | https://www.mdpi.com/2073-4360/14/23/5153 |
| work_keys_str_mv | AT jaredwmcrory behaviorofhybridreinforcedconcretebridgedecksunderstaticandfatigueloading AT frayfpozolora behaviorofhybridreinforcedconcretebridgedecksunderstaticandfatigueloading AT zacharybenson behaviorofhybridreinforcedconcretebridgedecksunderstaticandfatigueloading AT raedtawadrous behaviorofhybridreinforcedconcretebridgedecksunderstaticandfatigueloading AT marcmaguire behaviorofhybridreinforcedconcretebridgedecksunderstaticandfatigueloading |