CFRP for strengthening and repairing reinforced concrete: a review

Frhaan, Waseem Khairi Mosleh; Bakar, B.H. Abu; Hilal, Nahla; Al‐Hadithi, Abdulkader Ismail

doi:10.1007/s41062-020-00417-5

Cited by 25 publications

(18 citation statements)

References 28 publications

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“…Material ini lebih disukai karena memiliki sifat yang sangat baik, beberapa diantaranya adalah kuat, ringan, tahan terhadap korosi, serta mudah diaplikasikan [3]. Keunggulan material CFRP juga sebelumnya telah terbukti sangat efektif meningkatkan performa struktur beton bertulang [4]. Namun demikian, jumlah penelitian terkait aplikasinya untuk memperkuat struktur baja masih sangat terbatas dibandingkan dengan struktur beton.…”

Section: Pendahuluanunclassified

Penggunaan Laminasi CFRP Sebagai Material Perkuatan Pada Struktur Baja: Tinjauan Literatur

Yoresta

2023

JICE

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Dalam beberapa dekade terakhir, penggunaan carbon fiber reinforced polymer telah menarik banyak perhatian dalam aplikasinya pada bidang teknik sipil (civil engineering). Material ini disukai karena mempunyai banyak keunggulan, diantaranya adalah rasio kekuatan terhadap berat yang tinggi, ketahanan yang baik terhadap korosi, bobot ringan, serta mudah untuk diaplikasikan. Para peneliti telah mengeksplorasi lebih jauh mengenai pemanfaatannya untuk struktur beton. Banyak paper telah dipublikasikan dalam berbagai jurnal ilmiah. Namun demikian, penelitian mengenai efektivitasnya untuk memperkuat struktur baja masih sangat terbatas. Paper ini mereview hasil kajian eksperimental yang telah dilakukan oleh para peneliti mengenai pemanfaatan material CFRP dalam memperkuat elemen struktur baja. Topik yang dipilih untuk dibahas difokuskan pada kasus perkuatan kolom baja pendek (short steel column) dan juga kolom baja panjang (long steel column). Termasuk dalam pembahasan meliputi skema penerapan CFRP pada kolom baja, perlakuan pada permukaan baja, jenis material CFRP, tipe pembebanan, serta efek perkuatan bahan CFRP terhadap nilai kapasitas aksial kolom, pertambahan kekuatan, dan perbaikan pada kekakuan dan bentuk model kegagalan. Kesimpulan singkat diakhir paper ini dapat berperan sebagai petunjuk awal yang baik bagi pihak yang berminat pada topik kajian ini.

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Section: Pendahuluanunclassified

Penggunaan Laminasi CFRP Sebagai Material Perkuatan Pada Struktur Baja: Tinjauan Literatur

Yoresta

2023

JICE

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“…Compared to iron, CF is one-fourth the weight and ten times stronger [4]. In addition, CFRP has various advantages such as fatigue resistance, corrosion resistance, chemical resistance, low thermal expansion, and non-magnetic properties [5]. CFRP is mainly used in the automotive industry, aerospace, defense, wind turbine blades, and sports, where low weight and high strength are required, and it is also increasingly used in construction.…”

Section: Cfrp As a Materials For Civil Engineering Structuresmentioning

confidence: 99%

Analysis of electric signal generated from CFRP for sensing function of smart civil engineering structures

Lee

Park

2023

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2023

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Fiber-reinforced plastic (FRP) is a material used to reinforce civil engineering structures. Carbon-fiber-reinforced plastic (CFRP) is composed of conductive reinforcing filler and dielectric matrix. By utilizing the internal structure of CFRP and the difference in electrical conductivity of the components, carbon fiber (CF) and resin matrix can serve as a structural electrode and a frictional material, respectively. Electrostatic charge is generated by friction between resin covering CF and external materials. It induces an alternating current through CF according to the distance change between charged layers. Then, CFRP can be applied as a structural sensor using the triboelectric effect. In this research, we identified the triboelectric effect occurring on the surface of the composite and the electrostatic induction phenomenon occurring inside the composite. In addition, the voltage signal changes according to the movement of external materials. By identifying the effects that occur in composite materials, we have confirmed the possibility of realizing a smart civil engineering structure that can detect touch by itself.

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“…The application of FRP in RC structures utilizing normal and self-compacting concrete on mechanical and durability characteristics (i.e., installation, quality control, material selection, and environmental conditions) along with different design approaches that are available in various international design guidelines has been reviewed extensively in past, and it was concluded that more research is needed to investigate the maximum usable strain in externally bonded FRP material [ 1 , 11 , 31 ].…”

Section: Literature Reviewmentioning

confidence: 99%

“…However, due to the debonding failure of FRP at strains lower than the strain capacity of FRP, strengthening is compromised [ 40 ]. The load-carrying capacity of strengthened reinforced concrete members depends on the thickness as well as the width of CFRP, and there is a need to find the optimum length and width of CFRP strips [ 21 , 31 , 36 ]. Moreover, there is inconsistency between different design guidelines in relation to the use of maximum usable strain in externally bonded CFRP plates.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of CFRP Reinforcement Ratio on the Flexural Capacity and Failure Mode of Plain Concrete Prisms

Qureshi

Saleem²,

Khurram³

et al. 2022

Materials

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The utilization of carbon-fiber-reinforced polymer (CFRP) composites as strengthening materials for structural components has become quite famous over the last couple of decades. The present experimental study was carried out to examine the effect of varied widths of externally bonded CFRP on the debonding strain of CFRP and the failure mode of plain concrete beams. Twelve plain concrete prims measuring 100 mm × 100 mm × 500 mm were cast and tested under identical loading conditions. The twelve specimens include two control prisms, i.e., without CFRP strips, and the remaining ten prisms were reinforced with CFRP strips with widths of 10 mm, 20 mm, 30 mm, 40 mm, and 50 mm, respectively, i.e., two prisms in each group. Four-point loading flexural testing was carried out, and the resulting data are presented in the form of peak load vs. midpoint displacement, load vs. concrete strain, and load vs. CFRP strain. The peak load was directly recorded from the testing machine, while the midpoint deflection was recorded through the linear variable differential transducer (LVDT) installed at the midpoint. To measure the strain, two separate strain gauges were installed at the bottom of each concrete prism, i.e., one on the concrete surface and the other on the surface of the CFRP strip. The results of this study indicate that the debonding strain is a function of CFRP strip width and that the failure patterns of beams are significantly affected by the CFRP reinforcement ratio.

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CFRP for strengthening and repairing reinforced concrete: a review

Cited by 25 publications

References 28 publications

Penggunaan Laminasi CFRP Sebagai Material Perkuatan Pada Struktur Baja: Tinjauan Literatur

Penggunaan Laminasi CFRP Sebagai Material Perkuatan Pada Struktur Baja: Tinjauan Literatur

Analysis of electric signal generated from CFRP for sensing function of smart civil engineering structures

Investigation of CFRP Reinforcement Ratio on the Flexural Capacity and Failure Mode of Plain Concrete Prisms

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