Structural implications of ultra-high performance fibre-reinforced concrete in bridge design

Spasojevic, Ana

doi:10.5075/epfl-thesis-4051

Cited by 3 publications

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“…The evolution of concrete's compressive strength over the last 100 years is also shown in Figure 2. (Spasojevic, 2008) During the 1960s, concrete technology progressed slowly, with a maximum compressive strength of 15-20 MPa. Over the course of about ten years, it was increased by three times to 45-60 MPa, with a significant advance made possible by the use of water reducers.…”

Section: Development Of Uhpcmentioning

confidence: 99%

Permeation and Fiber Matrix Bond Behaviour of Ultra High Performance Concrete – A Review

Prakash

Rai

2022

Journal of Applied Engineering Sciences

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A brief review of the evolution and origins of Ultra-High Performance Concrete (UHPC) is covered in this article. UHPC is a unique concrete with unique features such as workability, mechanical properties, and durability that differs from regular concrete and high-performance concrete in terms of mix composition, needs, and manufacturing methods. In terms of the material ingredients of UHPC, Silica Fume (SF) plays a critical role in the production of UHPC due to its unique physical and chemical properties. Ground Granulated Blast Furnace Slag (GGBS), a highly reactive pozzolan similar to SF, is another viable contender among mineral admixtures. As a result, this article examines the effects of SF and GGBS in the UHPC combination. This paper also reviews the durability of UHPC in terms of water and chloride-ion permeability. A brief review of the importance of steel and polypropylene fibre (PPF) in UHPC blends, as well as their pull-out behaviour, is also reviewed.

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Section: Development Of Uhpcmentioning

confidence: 99%

Permeation and Fiber Matrix Bond Behaviour of Ultra High Performance Concrete – A Review

Prakash

Rai

2022

Journal of Applied Engineering Sciences

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Strength Evaluation of UHPFRC Flexural Member by Analytical Method

Park¹,

Hwang²

2013

Journal of the Korean Society of Safety

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The analytical model was constituted to evaluate the flexural strength of UHPFRC(ultra high performance fiber reinforced concrete) member. The analytical approach was attemped to study the effect of the joint and the result compared with the experimental study to verify the analytical model. The calculated value tends to underestimate about 23%~25% in comparison with the experimental result of the jointed test member because the bond stress between precast UHPFRC and cast-in-place UHPFRC surface is not considered in the analytical model. But in the case of the continuous test member, the analytical model provides reasonable results for the flexural strength of UHPFRC member.

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Analysis of Flexural Behavior of Composite Beam with Steel Fiber Reinforced Ultra High Performance Concrete Deck and Inverted-T Shaped Steel with Tension Softening Behavior

Yoo¹,

Yang²,

Jung³

2015

Journal of the Korea Concrete Institute

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Ultra high performance concrete (UHPC) has been developed to overcome the low tensile strengths and brittleness of conventional concrete. Considering that UHPC, owing to its composition and the use of steel fibers, develops a compressive strength of 180 MPa as well as high stiffness, the top flange of the steel girder may be superfluous in the composite beam combining a slab made of UHPC and the steel girder. In such composite beam, the steel girder takes the form of an inverted-T shaped structure without top flange in which the studs needed for the composition of the steel girder with the UHPC slab are disposed in the web of the steel girder. This study investigates experimentally and analytically the flexural behavior of this new type of composite beam to propose details like stud spacing and slab thickness for further design recommendations. To that goal, eight composite beams with varying stud spacing and slab thickness were fabricated and tested. The test results indicated that stud spacing running from 100 mm to 2 to 3 times the slab thickness can be recommended. In view of the relative characteristic slip limit of Eurocode-4, the results showed that the composite beam developed ductile behavior. Moreover, except for the members with thin slab and large stud spacing, most of the specimens exhibited results different to those predicted by AASHTO LRFD and Eurocode-4 because of the high performance developed by UHPC.

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Structural implications of ultra-high performance fibre-reinforced concrete in bridge design

Cited by 3 publications

References 0 publications

Permeation and Fiber Matrix Bond Behaviour of Ultra High Performance Concrete – A Review

Permeation and Fiber Matrix Bond Behaviour of Ultra High Performance Concrete – A Review

Strength Evaluation of UHPFRC Flexural Member by Analytical Method

Analysis of Flexural Behavior of Composite Beam with Steel Fiber Reinforced Ultra High Performance Concrete Deck and Inverted-T Shaped Steel with Tension Softening Behavior

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