Temperature Effects on Full Scale FRP Bridge Using Innovative Composite Components

Sirimanna, C. S.; Islam, Mainul; Aravinthan, Thiru

doi:10.1007/978-3-642-17487-2_82

Cited by 3 publications

(3 citation statements)

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“…In these civil engineering applications, the epoxy-based polymer can be subjected to aggressive environmental conditions including in-service elevated temperatures, which can degrade this material. For example, Sirimanna et al [15] measured a surface temperature as high as 61 o C for FRP composite bridge decks exposed to Australian weather conditions. In such conditions, the main concern was the decrease of the mechanical properties due to material degradation from elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Effect of elevated in-service temperature on the mechanical properties and microstructure of particulate-filled epoxy polymers

Khotbehsara

Manalo

Aravinthan

et al. 2019

Polymer Degradation and Stability

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In civil engineering applications, epoxy-based polymers are subject to different environmental conditions including in-service temperature, which might accelerate their degradation and limit their application ranges. Recently, different particulate fillers were introduced to enhance the mechanical properties and reduce the cost of epoxy-based polymers. This paper addresses the effect of in-service elevated temperature (from room temperature to 80 o C) in particulate-filled epoxy based resin containing up to 60% by volume of fire retardant and fly ash fillers through a deep understanding of the microstructure and analysis of their mechanistic response. An improvement in the retention of mechanical properties at in-service elevated temperature was achieved by increasing the percentages of fillers. The retention of compressive and split tensile strength at 80 o C for the mix containing 60% fillers was 72% and 52%, respectively, which was significantly higher than the neat epoxy. Thermo-dynamic analysis showed an increase in glass transition temperature with the inclusion of fillers, while these mixes also experienced less weight loss compared to neat epoxy, indicating better thermal stability. Scanning electron microscopy images showed the formation of dense microstructures for particulate-filled epoxy based resin at elevated temperatures. This indicates that the particulate filled epoxy resin exhibits better engineering

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Section: Introductionmentioning

confidence: 99%

Effect of elevated in-service temperature on the mechanical properties and microstructure of particulate-filled epoxy polymers

Khotbehsara

Manalo

Aravinthan

et al. 2019

Polymer Degradation and Stability

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“…Three temperature cases were analysed and Table 6 shows the temperatures of different parts of the GFRP-UFC composite beams for each case. Temperatures for Case 1 were determined based on the field investigation conducted by Sirimanna et al (2011) and those for Case 2 and Case 3 were assumed by the authors.…”

Section: Fma Of Gfrp-ufc Beams With a Moderate Temperature Gradientmentioning

confidence: 99%

“…Dai et al (2012) reported that FRP and concrete structures can experience 50°C or higher temperatures when they are located in hot climates and industrial environments. According to the field study on a full-scale GFRP bridge conducted by Sirimanna et al (2011), the maximum temperature experienced by the bridge deck can reach up to 60°C during summer where the ambient temperature is around 33°C. The hot temperature environments can degrade the stiffness and flexural capacity of the FRP composite beams and may result in large deformation of the FRP bridges.…”

Section: Introductionmentioning

confidence: 99%

Flexural behaviour of glass fibre-reinforced polymer and ultra-high-strength fibre-reinforced concrete composite beams subjected to elevated temperature

Wijayawardane

Mutsuyoshi

Nguyen

et al. 2016

Advances in Structural Engineering

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Composite beams consisting of pultruded glass fibre-reinforced polymer (GFRP) I-beams and ultra-high-strength fibre-reinforced concrete (UFC) slabs have been developed for use in short-span bridges. Fibre-reinforced polymer bolts (fibre-reinforced polymer threaded rods) and epoxy adhesive were used to connect the UFC slab to the GFRP I-beam. The authors conducted material tests and large-scale static bending tests at room and elevated temperatures (less than 90°C) to investigate the flexural behaviour of GFRP-UFC composite beams subjected to elevated temperature. The test results demonstrated that the mechanical properties of the GFRP I-beams, fibre-reinforced polymer bolts and epoxy adhesive were significantly deteriorated at elevated temperatures due to the glass transition of their polymer resin matrices. As a result, the stiffness and ultimate flexural capacity of the GFRP-UFC composite beams under elevated temperatures were significantly reduced. More than 85% of the flexural capacity of the GFRP-UFC composite beams was retained up to 60°C but that was decreased to 50% at 90°C. Fibre model analysis results confirmed that the stiffness of the GFRP-UFC composite beams is not significantly affected by actual hot environments, where there is a moderate temperature gradient across the beam cross-section.

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Review of FRP decks: structural and in-service performance

Mara

Haghani

2015

Proceedings of the Institution of Civil Engineers - Bridge Engi

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In the past two decades, fibre-reinforced polymer (FRP) bridge decks have attracted a great deal of attention for applications in the refurbishment of existing bridges and for the construction of new bridges. FRP decks are lighter, more corrosion resistant and easier to install than conventional concrete decks. A considerable amount of research effort has been devoted to FRP decks and numerous bridges have been rehabilitated or constructed using these decks. This paper presents a review of the structural and field performance of FRP decks. The latest research and current practices have been synthesised, and several experts and practitioners have been consulted. Aspects related to the structural behaviour of steel bridges with FRP decks, including fatigue performance, composite action between the deck and underlying girders, the performance of various connections as well as observed failure modes are reviewed and summarised. This paper concludes by identifying areas for further research.

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Temperature Effects on Full Scale FRP Bridge Using Innovative Composite Components

Cited by 3 publications

References 1 publication

Effect of elevated in-service temperature on the mechanical properties and microstructure of particulate-filled epoxy polymers

Effect of elevated in-service temperature on the mechanical properties and microstructure of particulate-filled epoxy polymers

Flexural behaviour of glass fibre-reinforced polymer and ultra-high-strength fibre-reinforced concrete composite beams subjected to elevated temperature

Review of FRP decks: structural and in-service performance

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