higher performance in precast concrete with cfrp

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Performance of CFRP posttensioned transverse grouted ...

Precast concrete specimens and CFRP rods Precast concrete panels were cast for this research with a 28-day concrete compressive strength of 11,000 psi (76 MPa). The specimens were grouted with the female-to-female joint configuration of Fig. 3; this is a new de-Figure 2. Plan view of jointed panel specimens. Note: CFRP = carbon-fiber-reinforced ...

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Precast segmental prestressed concrete beams (PSBs) have been widely used in many elevated highway bridge projects around the world. Steel tendons at joint locations, however, are vulnerable to corrosion damages, which cause deteriorations and in extreme cases lead to the collapse of the whole structures.This study experimentally investigates the use of carbon fibre-reinforced polymer (CFRP ...

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Jan 15, 2019  CFRP tendons can be used to replace the steel tendons for the use in the precast segmental concrete beams to overcome the possible corrosion-induced damage. All the tested beams with CFRP tendons exhibited excellent load-carrying capacity and ductility.-Tendon bonding condition greatly affected the flexural behavior of the segmental beams.

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mal performance, CFRP grid provides the additional benefit of high corrosion resist-ance. Fabrication Composite precast concrete panels are fab-ricated in a long-line precast concrete pro-duction facility. In some cases, panels are prestressed, but can also be

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Behaviour of precast concrete beams prestressed with CFRP ...

Behaviour of precast concrete beams prestressed with CFRP strands Fam et al. [9] tested I-girders to examine the behaviour of CFRP as prestressing and shear reinforcement for concrete bridges. The effect of CFRP stirrup configuration and size on shear behaviour, and performance in supplying dowel action between girder and top slab were studied.

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Fire behaviour of CFRP prestressed high strength concrete ...

ABSTRACT: More sustainable precast concrete elements are emerging utilizing high-performance, self-consolidating, fibre-reinforced concrete (HPSCC) reinforced with high-strength, lightweight, and non-corroding prestressed carbon fibre reinforced polymer reinforcement. One example of

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Structurally Composite, Thermally Efficient Precast Concrete

mal performance, CFRP grid provides the additional benefit of high corrosion resist-ance. Fabrication Composite precast concrete panels are fab-ricated in a long-line precast concrete pro-duction facility. In some cases, panels are prestressed, but can also be

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Carbon fiber-reinforced concrete accelerates in Germany ...

Jun 12, 2020  As of 2017, its members had completed more than 1,400 projects using CFRP-reinforced CarbonCast technology, totaling 40 million ft 2 (3.7 million m 2). Please read about the CarbonCast technology, ... “Higher performance in precast concrete with CFRP ...

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What Is High Performance Precast Concrete? - PCMA

Deadlines are quite deadly without the right materials. Prepare for anything with quick installation times. RESILIENCE. Time-tested and trusted resilience. Precast has stood the test of time. Up to date with FEMA regulations. High-Performance concrete can withstand natural disasters. Widespread fires.

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Ultra-high-performance concrete connections for precast ...

Abstract. Deployment of prefabricated concrete bridge decking systems continues to face constructability and serviceability challenges related to the field-cast connections between the components. A set of connection details was developed, tested, and brought to initial deployment. These details engage the performance of ultra-high-performance ...

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Building lightweight structures with carbon‐fiber ...

Nov 25, 2018  One strategy being pursued at the University of Natural Resources and Life Sciences, Vienna and TU Wien is to reduce the amount of concrete and reinforcement in structures by using high-performance materials such as carbon-fibre-reinforced polymers (CFRP) in ultra-high-performance concrete (UHPC) members.

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BOND STRENGTH OF CFRP AND STEEL BARS IN CONCRETE

elements made of high performance concrete prestressed with CFRP tendons [1]. One notable example of this is the use of precast, prestressed 8.8 m (28.87 ft) long beams with L-shaped cross-

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(PDF) Seismic Retrofit of Precast RC Wall Panels with Cut ...

After the first test series, the crumbled concrete was replaced by high-strength mortar and the walls were strengthened by CFRP fabrics, using the Externally Bonded Reinforcement (EBR) technique. For details on the FRP sheet arrangement and material properties see Figure 1, and Table 2, respectively.

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GM-1301: High Performing Precast Concrete Building ...

Mar 11, 2013  High performance precast concrete enclosure walls stand apart from most "rainscreen" walls in several key respects: how they control rain penetration, how they provide airtightness, and their sequence of construction. This guide reviews the requirements for high performance enclosures as they apply to precast concrete, with special emphasis on the control of rainwater

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Fire Behaviour of CFRP Prestressed High Strength Concrete ...

Abstract. More sustainable precast concrete elements are emerging utilizing high-performance, self-consolidating, fibre-reinforced concrete (HPSCC) reinforced with high-strength, lightweight, and non-corroding prestressed carbon fibre reinforced polymer reinforcement.

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Flexural Performance of Precast Geopolymer Concrete ...

The flexural behaviour of a precast concrete sandwich panel constructed of high performance fibre reinforced concrete wythes and foam insulation, connected together with carbon fibre reinforced ...

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TRB 2019: Nanotechnology boosts performance of ...

Feb 26, 2019  Precast concrete products were on the agenda of the 99th annual Transportation Research Board meeting in January in Washington, D.C. Over 12,000 delegates heard presentations in 800-plus sessions addressing multimodal transportation policy and construction practice, including materials and design involving precast/prestressed products.

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Precast Concrete Basics High Concrete Group

Precast concrete helps create high-performance buildings through integrated design strategies, balancing efficiencies for all of the building’s materials, systems, and design. High-performance buildings combine energy efficiency , low cost, high durability (or service life), space flexibility, low environmental impact, and high quality of life.

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Performance of Precast Concrete Bridge Girders with ...

The best performance was for the girder that was strengthened using a mechanical anchor with a 7.25% increase in the failure load compared to the control girder. The results also suggest places for anchors to prevent debonding propagation between CFRP and concrete

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Fire behaviour of CFRP prestressed high strength concrete ...

ABSTRACT: More sustainable precast concrete elements are emerging utilizing high-performance, self-consolidating, fibre-reinforced concrete (HPSCC) reinforced with high-strength, lightweight, and non-corroding prestressed carbon fibre reinforced polymer reinforcement. One example of

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BOND STRENGTH OF CFRP AND STEEL BARS IN CONCRETE

elements made of high performance concrete prestressed with CFRP tendons [1]. One notable example of this is the use of precast, prestressed 8.8 m (28.87 ft) long beams with L-shaped cross-

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Flexural Behavior of CFRP Precast Prestressed Decked Bulb ...

Concrete Institute (ACI) 440.4R (ACI 2004) for CFCC strands and CFRP Leadine tendons (65% of the guaranteed strength). The pre-stressing force was applied 1 day before casting the concrete in the formwork using two bulkheads anchored to a heavily reinforced concrete foundation with high-strength bolts. In addition, CFCC

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CFRP Tendon Prestress Monitoring by Resistance

performance spun concrete reinforced with high-strength, lightweight, and non-corroding prestressed Carbon Fibre Reinforced Polymer (CFRP) reinforcement. One example of this is a new type of precast CFRP pretensioned spun concrete pylon intended as powerline mast. One

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Use of CFRP/CFCC Reinforcement in Prestressed Concrete Box ...

This paper presents the results of an experimental investigation on the flexural response of two identical box-beam bridge models reinforced and prestressed with different types of carbon fiber reinforced polymer (CFRP) tendons/strands. The first box-beam bridge model BBD-I was reinforced and prestressed using CFRP-DCI tendons, while the second bridge model BBC-I was reinforced and prestressed ...

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Template for JCI

Next, a reinforcement method for the aged concrete is demonstrated by using the high performance CFRP strips fabricated with the pultrusion method. Three kinds of concrete beams reinforced with the CFRP strips with different vertical insert positions and different numbers of the CFRP strips are tested by a four point bending test method. In

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(PDF) Seismic Retrofit of Precast RC Wall Panels with Cut ...

After the first test series, the crumbled concrete was replaced by high-strength mortar and the walls were strengthened by CFRP fabrics, using the Externally Bonded Reinforcement (EBR) technique. For details on the FRP sheet arrangement and material properties see Figure 1, and Table 2, respectively.

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(PDF) Blast testing of ultra-high performance fibre and ...

Blast testing of ultra-high performance fibre and FRP-retrofitted concrete slabs . × Close Log In. Log In with Facebook Log In with Google. Sign Up with Apple. or. Email: Password: Remember me on this computer. or reset password. Enter the email address you

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High Performing Precast Concrete Building Enclosures: Rain ...

Figure 1: Attention to detail will ensure precast concrete wall panels provide high-performance enclosures. ... horizontal joint and floor intersection demonstrating high-performance continuity of the water, air, and thermal control. Fully-drained and vented rain control at all joints.

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Fire Behaviour of CFRP Prestressed High Strength Concrete ...

Their performance in fire must be understood before they can be widely used with confidence. It is known that the bond strength between both steel and FRP reinforcing bars and concrete deteriorates at elevated temperature and that high strength concrete tends to an explosive spalling failure when subjected to a fire.

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Prestressing low clinker structural concrete elements by ...

Feb 15, 2021  The combination of low clinker high-performance concrete (LCHPC) and ultra-high modulus (UHM) carbon fibre reinforced polymer (CFRP) tendons was recently proposed for prestressed structural elements. The 70% reduction in cement content resulting in limited creep and shrinkage of the LCHPC in comparison to a conventional high-performance concrete (HPC) and the very high UHM-CFRP

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Fire Behavior of Thin CFRP Pretensioned High Strength ...

More sustainable precast concrete structural elements are emerging from the research community utilizing high-strength, selfconsolidating fiber-reinforced concrete (HPSCC) reinforced with noncorroding prestressed carbon-fiber-reinforced polymer (CFRP).

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Fire Behavior of Thin CFRP Pretensioned High-Strength ...

More sustainable precast concrete structural elements are emerging from the research community utilizing high-strength, self-consolidating fiber-reinforced concrete (HPSCC) reinforced with noncorroding prestressed carbon-fiber-reinforced polymer (CFRP). An example of this is a new type of precast CFRP pretensioned HPSCC panel intended as load-bearing beams or columns for use in building envelopes.

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