Full-scale testing and numerical analysis of a precast fibre reinforced self-compacting concrete slab pre-stressed with basalt fibre reinforced polymer bars

Lago, Bruno Dal; Taylor, Su; Deegan, Peter; Ferrara, Liberato; Sonebi, Mohammed; Crosset, Philip; Pattarini, Andrea

doi:10.1016/j.compositesb.2017.07.004

Cited by 32 publications

(10 citation statements)

References 35 publications

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“…This opened new opportunities for researchers and designers and allowed them to carry out realistic and improved modeling of FRP-strengthened concrete structures in which due consideration will be given to specifics related to adhesive/bonding agent as well as various failure mechanisms, including FRP debonding. As a result, recent studies employed modern simulation techniques to realize realistic modeling of FRP-related phenomenon [6,[25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Modeling Strategies of Finite Element Simulation of Reinforced Concrete Beams Strengthened with FRP: A Review

2021

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Fiber-reinforced polymer (FRP) composites do not only possess superior mechanical properties, but can also be easy to tailor, install, and maintain. As such, FRPs offer novel and attractive solutions to facilitate strengthening and/or retrofitting of aging, weakened, and upgraded structures. Despite the availability of general code provisions, the design and analysis of FRP-strengthened concrete structures is both tedious and complex—especially in scenarios associated with unique loading conditions. As such, designers often leverage advanced finite element (FE) simulation as a mean to understand and predict the performance of FRP-strengthened structures. In order to narrow this knowledge gap, this paper details suitable strategy for developing and carrying out advanced FE simulations on FRP-strengthened concrete structures. The paper also covers techniques related to simulating adhesives (bonding agents), material constitutive properties and plasticity (cracking/crushing of concrete, yielding of steel reinforcement, and delamination of FRP laminates), as well as different material types of FRP (CFRP, GFRP, and their hybrid combinations), and FRP strengthening systems (sheets, plates, NSM, and rods) under various loading conditions including ambient, earthquake, and fire. The principles, thumb rules, and findings of this work can be of interest to researchers, practitioners, and students.

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Section: Introductionmentioning

confidence: 99%

Modeling Strategies of Finite Element Simulation of Reinforced Concrete Beams Strengthened with FRP: A Review

2021

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“…The evidence shows that prestressed BFRP reinforced elements have improved stiffness, approaching or surpassing that of steel reinforced elements with the same reinforcement ratio at levels of prestress over 30% of the ultimate tensile capacity of the bars. Due to the anisotropy of the mechanical properties of BFRP, the anchorage of tendons is also an area of high importance, especially for prestressing applications; issues such as slipping or crushing of the tendons have been reported when using industrial wedge anchorage (Dal Lago et al 2017;Motwani et al 2020) (Dal Lago et al 2017;Motwani et al 2020).…”

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confidence: 99%

Short- and Long-Term Prestress Losses in Basalt FRP Prestressed Concrete Beams under Sustained Loading

et al. 2022

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The favourable mechanical properties of basalt fibre-reinforced polymer (BFRP) bars, such as their excellent strength-to-weight ratio, resistance to corrosion, lower environmental impact and electromagnetic neutrality, make them attractive for internal reinforcement of concrete elements with specific service requirements. Prestressing has emerged as a possible method for limiting the deflections and cracking of BFRP reinforced flexural RC elements. However, long-term behaviour of such structural members has not yet been investigated extensively. Therefore, this paper aims to give information on long-term behaviour and prestress losses of pretensioned BFRP reinforced concrete beams based on the collected experimental data. The testing programme includes long-term analysis of six BFRP concrete beams pretensioned to different prestress levels; namely, 20%, 30% and 40% of the ultimate tensile capacity of the bars. The monitored testing stages included initial tensioning of the bars, casting and curing of concrete, transfer of prestressing force to the concrete, long-term unloaded phase after transfer, sustained loading application, long-term sustained loading phase, unloading and final destructive testing, conducted in a controlled indoor environment. During all phases of the testing strain levels in the BFRP bars and deflections were continuously monitored. The results of continuous strain monitoring show that the average loss of strain over the period of initial 90 days of Journal of Composites for Construction unloaded monitoring was 7% of the initial strain. During the following 6 months of monitoring under sustained loading recorded an additional 0.3% reduction on average. The loss was dependent on the initial strain.

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“…Amin et al made materials characterisation of macro synthetic fibre reinforced concrete[157]. Dal Lago et al conducted full-scale testing and numerical analysis of a precast fibre reinforced self-compacting concrete slab pre-stressed with basalt fibre reinforced polymer bars[158]. Hamad aimed to find the size and shape effect of specimen on the compressive strenght of HPLWFC reinforced with glass fibres[159].Ahmad et al reported an experimental study on the properties of normal concrete, self-compacting concrete and glass fibre-reinforced self-compacting concrete[160].…”

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confidence: 99%

Glass Fibre Reinforced Concrete (GFRC)

Iskender

Karasu

2018

El-Cezeri Fen Ve Mühendislik Dergisi

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In the 1940's, potential of glass as a construction material was realized and improvement continued with the addition of zirconium dioxide in 1960's for harsh alkali conditions. To enhance durability of materials, new generation of glass fibres directed to improvement process. In this way, glass fibre reinforced concrete (GFRC) was started to produce for the satisfaction of different demands. Scientific studies and tests on the GFRC have shown that the physical and mechanical properties of the GFRC change depending on the quality of the materials and the accuracy of the production methods. GFRC can be used wherever a light, strong, fire resistant, weather resistant, attractive, impermeable material is needed. As technology advances, it is possibly expected to build the whole building and complex freeform with low cost. In recent years, the effect of glass fibres in hybrid mixtures has been investigated for high-performance concrete (HPC), an emerging technology termed, which has become popular in the construction industry.

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Full-scale testing and numerical analysis of a precast fibre reinforced self-compacting concrete slab pre-stressed with basalt fibre reinforced polymer bars

Cited by 32 publications

References 35 publications

Modeling Strategies of Finite Element Simulation of Reinforced Concrete Beams Strengthened with FRP: A Review

Modeling Strategies of Finite Element Simulation of Reinforced Concrete Beams Strengthened with FRP: A Review

Short- and Long-Term Prestress Losses in Basalt FRP Prestressed Concrete Beams under Sustained Loading

Glass Fibre Reinforced Concrete (GFRC)

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