Journal ArticleDOI
UHPFRC Technology to enhance the performance of existing concrete bridges
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TLDR
In this paper, UHPFRC is combined with reinforcing steel bars forming a reinforced Cementitious Composite layer with the goal to enhance the performance of the UHP-FRC layer.Abstract:
‘Structural UHPFRC’ stands for Ultra-High Performance Fibre Reinforced Cementitious Composite material, that is, complemented by reinforcing steel bars forming a R-UHPFRC layer with the goal to enh...read more
Citations
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Journal ArticleDOI
International Perspective on UHPC in Bridge Engineering
Benjamin A. Graybeal,Eugen Brühwiler,Byung-Suk Kim,François Toutlemonde,Yen Lei Voo,Arash E. Zaghi +5 more
TL;DR: In this article, UHPC offers significant potential to address a variety of needs in bridge design, construction, and performance enhancement, and bridge owners have shown willingness to adopt it for bridge design and construction.
Journal ArticleDOI
From casting to 3D printing geopolymers: A proof of concept
TL;DR: In this paper, a mix design strategy for the implementation of geopolymer in powder bed 3D printing is presented, where an aluminosilicate powder bed is activated through the deposit of an alkaline silicate solution.
Journal ArticleDOI
A Review of the Use of UHPFRC in Bridge Rehabilitation and New Construction in Switzerland
TL;DR: A review of UHPFRC applications in the country is proposed in this article, where 10 bridge case studies are presented, including five strengthening of existing structures and five new designs.
Journal ArticleDOI
Long-term strain measurements of traffic and temperature effects on an RC bridge deck slab strengthened with an R-UHPFRC layer
TL;DR: In this article, the results of 28-month-long monitoring of a slab portion of the Chillon viaducts in Switzerland using strain gauges and thermocouples are presented.
Journal ArticleDOI
Numerical analysis of bridge deck rehabilitation by ultra-high-performance concrete (UHPC) overlay
Youyou Zhang,Y. H. Chai +1 more
TL;DR: Results indicated that stress variations in the existing box-girder were acceptable during the deck rehabilitation construction, but significant tensile stresses were developed in the newly placed UHPC deck overlay.
References
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Journal ArticleDOI
Experimental Investigation on Reinforced Ultra-High-Performance Fiber-Reinforced Concrete Composite Beams Subjected to Combined Bending and Shear
TL;DR: In this paper, a series of composite beams combining a 250 mm (9.84 in.) deep reinforced concrete (RC) element and a 50 mm (1.97 in.) thick reinforced ultra-high-performance fiber-reinforced concrete (R-UHPFRC), were tested in a cantilever-beam setup.
Journal ArticleDOI
Permeability of ultra high performance fiber reinforced concretes (UHPFRC) under high stresses
TL;DR: In this paper, the authors defined maximal tensile deformations whereby the water permeability of a specific UHPFRC remains low for various exposure conditions, based on which it was possible to define maximal tensil deformations.
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Tensile fatigue behaviour of Ultra-High Performance Fibre Reinforced Concrete combined with steel rebars (R-UHPFRC)
Tohru Makita,Eugen Brühwiler +1 more
TL;DR: In this paper, a tensile fatigue test was conducted on R-UHPFRC elements for the determination of its fatigue behavior and the results showed a fatigue endurance limit at 10 million cycles at a solicitation level of S = 0.54 for S being the ratio between the maximum fatigue force and the ultimate strength.
Structural Response of Reinforced UHPFRC and RC Composite Members
TL;DR: In this article, the structural behavior of UHPFRC-UHP-FRC composite members is investigated with a comprehensive experimental program, and the effect of reinforcement on the tensile behavior of composite sections is discussed.
Journal ArticleDOI
Effect of fiber orientation on the in-plane tensile response of UHPFRC reinforcement layers
TL;DR: In this paper, a comprehensive material testing campaign of a strainhardening UHPFRC is carried out on specimens with various thicknesses and casting processes and a meso-mechanical model is calibrated on the results.