Prestressed CFRP Fabrics for Flexural Strengthening of Concrete Beams with an Easy Prestressing Technique

Şakar, Gökhan; Tanarslan, Hasan Murat

doi:10.1007/s11029-014-9440-0

Cited by 7 publications

(7 citation statements)

References 6 publications

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“…The increase in the width ratio of the strand sheet was led to an increase in the strain capacity utilisation by another 6%. While the prestressing of high strength CFRP (Badawi and Soudki 2009;Hajihashemi et al 2011;Huang et al 2005Huang et al , 2000Peng et al 2014;Şakar and Tanarslan 2014;Wight et al 2001;Ye et al 2014) and anchoring of sheets (Adhikary and Mutsuyoshi 2002;Al-Deen Bsisu et al 2015;Alagusundaramoorthy et al 2003;Ali et al 2014;Almusallam et al 2015;Aravind et al 2013;Bahn and Harichandran 2008;Chahrour and Soudki 2005; al. 2019; Hussain et al 1995;Jawdhari et al 2018b;Jumaat and Alam 2009;Nguyen-Minh et al 2018;Rabinovitch and Frostig 2003;Rasheed et al 2010;Siddiqui 2009;Swamy and Mukhopadhyaya 1999;Xiong et al 2007;Zhang et al 2012Zhang et al , 2017Zhou et al 2013;Zhuang et al 2018) have been recommended to allow greater utilisation of the capacity of the FRP composites, it can be seen from the results here that even without these measures 50% of the capacity of the high strength CFRP strand sheets and 100% of the capacity of the high modulus sheets is utilised.…”

Section: Strains In Steel Cfrp and Shear Stress At Frp-concrete Intementioning

confidence: 99%

Influence of CFRP Strand Sheet on Flexural Strengthening of Reinforced Concrete Beam

Kumar

Bishnoi

Bhattacharjee

2020

ACT

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Section: Strains In Steel Cfrp and Shear Stress At Frp-concrete Intementioning

confidence: 99%

Influence of CFRP Strand Sheet on Flexural Strengthening of Reinforced Concrete Beam

Kumar

Bishnoi

Bhattacharjee

2020

ACT

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“…The working principle of the device is: form a loop in the process of prestressing on CFRP through rollers, make the lever hoist and force sensor are respectively connected with the two free ends of the CFRP, and then use the lever hoist to tighten the CFRP and prestress on it. The current research status of related fields at abroad (1)G.Sakar [8] and others made a simple test equipment used to prestress on CFRP, and use the prestressed CFRP to reinforce the concrete beams, the bending destructive test found that the ultimate strength of the specimens and bending performance have improved significantly, it shows that the prestressed CFRP can give full play to its high performance.…”

Section: The Current Research Status Of Related Fields At Home and Abmentioning

confidence: 99%

New Exploration of CFRP prestressed equipment

Xu¹,

Zhao²

2015

Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering

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CFRP is widely used in the area of reinforcement because of its many advantages, but ordinary methods of past can not give full play to high-strength properties of CFRP.Therefore, new technology of concrete structures strengthened with prestressed CFRP emerges as the times require. At the same time,the prestressed tensioning equipment as the main construction tools has become a top priority. In this paper, we explored a new set of CFRP prestressed equipment, which is suitable for laboratory use through a comparative study of the existing applying ways and tensioning equipment of prestressed CFRP,and made use of the equipment to conduct the experimental research on strengthening concrete beams with prestressed CFRP.Experiment shows that the concrete beams strengthened with prestressed CFRP improved more significantly than the ones strengthened with ordinary CFRP in the aspects such as the bearing capacity. Thus it can be seen that the reinforcement effect is good, and the equipment can be further studied and applied to practical engineering.

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“…For the strengthening test, the No. 1 Xiaojia Bridge of Qinglan Highway (former Jiaozhou Bay Highway section) was chosen because it was found to have more cracks and greater durability problems; it has also previously been used in other cases involving CFRP laminates [22][23][24][25]. The continuous prestressed concrete bridge consists of hollowslab beams and pot-type rubber bearings, and the span layout is 5 × 25.0 m and 75 m (15.5 m + 2 × 22.0 m + 15.5 m).…”

Section: Introduction Of the Strengthened Bridge For Testmentioning

confidence: 99%

Bridge Performance Recovery Test after Strengthening with a Prestressed CFRP Laminate

2023

Sustainability

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This paper introduces the strengthening of a concrete bridge using a CFRP laminate anchorage system and describes the static and dynamic test process, including the loading method and the test results. This paper compares the stress, strain, and deformation of each key section before and after reinforcement under static loads, moving loads, braking vehicles, and jumping vehicles to demonstrate the strengthening effect of the bridge and the performance of the CFRP laminate. The CFRP laminate anchorage system effectively restores the structural elastic properties of the bridge, enabling the prestressed CFRP laminates and the bridge structure to synergistically function as a composite, exhibiting exceptional operational performance. After reinforcement, the maximum dynamic deflection in the middle span after reinforcement decreases by 25.73%, and the maximum dynamic strain in the middle span decreases by 18.00%; under the jumping vehicle, the damping ratio decreases by 43.69%. By strengthening with prestressed CFRP, the original damaged bridge can have its performance restored and its service life extended, and the need for bridge demolition and reconstruction is avoided. This brings about social benefits by saving raw materials, reducing demolition waste, and protecting the environment.

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Prestressed CFRP Fabrics for Flexural Strengthening of Concrete Beams with an Easy Prestressing Technique

Cited by 7 publications

References 6 publications

Influence of CFRP Strand Sheet on Flexural Strengthening of Reinforced Concrete Beam

Influence of CFRP Strand Sheet on Flexural Strengthening of Reinforced Concrete Beam

New Exploration of CFRP prestressed equipment

Bridge Performance Recovery Test after Strengthening with a Prestressed CFRP Laminate

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