First Ultra-High-Performance Fibre-Reinforced Concrete Footbridge in Spain: Design and Construction

López, Juan; Ros, Pedro Serna; Camacho, Esteban; Coll, Hugo; Navarro‐Gregori, Juan

doi:10.2749/101686614x13830788505793

Cited by 40 publications

(20 citation statements)

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“…A type 3 UHPFRC according with AFGC (the most demanding UHPFRC type) requires a tensile strain hardening response. In this work, it was decided to use the developed type 2 UHPFRC due to previous knowledge with this mix and its good enough structural response at a competitive cost for real applications [23]. Table 2 also displays the coefficient of variation (CV) of the different parameters, being calculated as the ratio of the standard deviation to the average value of the data.…”

Section: Flexural-tensile Strength Of Uhfprcsmentioning

confidence: 99%

Influence of Cracking on Oxygen Transport in UHPFRC Using Stainless Steel Sensors

et al. 2019

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Reinforced concrete elements frequently suffer small cracks that are not relevant from the mechanical point of view, but they can be an entrance point for aggressive agents, such as oxygen, which could initiate the degradation processes. Fiber-Reinforced Concrete and especially Ultra High Performance Concrete increase the multi-cracking behavior, reducing the crack width and spacing. In this work, the oxygen availability of three types of concrete was compared at similar strain levels to evaluate the benefit of multi-cracking in the transport of oxygen. The types of concrete studied include traditional, High-Performance, and Ultra-High-Performance Fiber-Reinforced Concrete with and without nanofibers. To this purpose, reinforced concrete beams sized 150 × 100 × 750 mm 3 were prepared with embedded stainless steel sensors that were located at three heights, which have also been validated through this work. These beams were pre-cracked in bending up to fixed strain levels.The results indicate that the sensors used were able to detect oxygen availability due to the presence of cracks and the detected differences between the studied concretes. Ultra High Performance Concrete in the cracked state displayed lower oxygen availability than the uncracked High Performance Concrete, demonstrating its potential higher durability, even when working in cracked state, thanks to the increased multi-cracking response. Author Contributions: Conceptualization, P.S. and M.V.; methodology, P.S., A.M.-I.; formal analysis, A.M.-I. and M.R.-F.; investigation, A.M.-I., E.J.M.-A. and J.L.-F.; resources, P.S. and M.V.; writing-review and editing, M.R.-F. and A.M.-I.; supervision, P.S. and M.V.; project administration, M.R.-F.; funding acquisition, A.M.-I., M.V., P.S. and M.R.-F. All authors have read and agreed to the published version of the manuscript.

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Section: Flexural-tensile Strength Of Uhfprcsmentioning

confidence: 99%

Influence of Cracking on Oxygen Transport in UHPFRC Using Stainless Steel Sensors

et al. 2019

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“…UHPC is a kind of concrete which shows high strength and durability, while UHPC has a tension-softening property after peak stress and a low strain-hardening property with the tensile capacity at about 0.5% [3]. López and Serna [4] introduced an innovative design of a 43.5 m span footbridge, constructed only with UHPC and placed over the ovejas ravine in Alicante, Spain. ECC is a special class of high-performance fiber reinforced concrete, which was designed based on the micromechanics theory proposed by Li et al in the 1990s [2] as a ductile alternative to conventional concrete.…”

Section: Introductionmentioning

confidence: 99%

Using Green Supplementary Materials to Achieve More Ductile ECC

Wang

Zhang

et al. 2019

Materials

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To improve the greenness and deformability of engineered cementitious composites (ECC), recycled powder (RP) from construction and demolition waste with an average size of 45 μm and crumb rubber (CR) of two particle sizes (40CR and 80CR) were used as supplements in the mix. In the present study, fly ash and silica sand used in ECC were replaced by RP (50% and 100% by weight) and CR (13% and 30% by weight), respectively. The tension test and compression test demonstrated that RP and CR incorporation has a positive effect on the deformability of ECC, especially on the tensile strain capacity. The highest tensile strain capacity was up to 12%, which is almost 3 times that of the average ECC. The fiber bridging capacity obtained from a single crack tension test and the matrix fracture toughness obtained from 3-point bending were used to analyze the influence of RP and CR at the meso-scale. It is indicated that the replacement of sand by CR lowers the matrix fracture toughness without decreasing the fiber bridging capacity. Accordingly, an explanation was achieved for the exceeding deformability of ECC incorporated with RP and CR based on the pseudo-strain hardening (PSH) index.

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“…The enhanced strength and durability of UHPC mainly result from the elimination of coarse aggregates, extremely low water-to-powder ratio, high amount of silica fume, and the use of steel fibers (Aydin and Baradan, 2013; Savino et al, 2018; Yazıcı et al, 2010). In recent years, the advantages of UHPC and steel tube are fully exploited to form UHPC-filled steel tube members (referred to as UCFST) in order to improve their strength and durability (Hassan and Kawakami, 2005; Lopez et al, 2014). For example, the confinement of UHPC provided by the steel tube compensates the brittleness of UHPC (Bonneau et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the cyclic behavior of ultra high performance concrete–filled steel tube beam-columns

Wei

Zhou

Huang

et al. 2019

Advances in Structural Engineering

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This article experimentally investigates the cyclic behavior of ultra high performance concrete–filled steel tube beam-columns. A total of eight specimens were tested. The considered parameters were the axial load ratio and steel ratio. The results showed that all ultra high performance concrete–filled steel tube beam-columns had a very good cyclic behavior without significant pinching. Increasing the axial load ratio results in the decrease of strength and ductility, but it has no obvious influence on the initial flexural stiffness. Reducing the steel ratio results in the decrease of the strength, stiffness and ductility, and energy dissipation capacity.

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First Ultra-High-Performance Fibre-Reinforced Concrete Footbridge in Spain: Design and Construction

Cited by 40 publications

References 0 publications

Influence of Cracking on Oxygen Transport in UHPFRC Using Stainless Steel Sensors

Influence of Cracking on Oxygen Transport in UHPFRC Using Stainless Steel Sensors

Using Green Supplementary Materials to Achieve More Ductile ECC

Experimental study on the cyclic behavior of ultra high performance concrete–filled steel tube beam-columns

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