Strengthening of Corrosion-Damaged Reinforced Concrete Beams with Glass Fiber Reinforced Polymer Laminates

Rose, A. Leema; Suguna, K.; Ragunath, P. N.

doi:10.3844/jcssp.2009.435.439

Cited by 11 publications

(7 citation statements)

References 7 publications

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“…FRP dapat digunakan untuk memperkuat atau merehabilitasi balok beton bertulang dengan bukaan pada balok (Mondal & Gautam, 2011). Penggunaan FRP pada struktur yang telah mengalami penurunan kekuatan akibat korosi di mana balok yang diperkuat dengan FRP akan meningkatkan kekakukan, batas leleh dan kekuatan batasnya (Rose et al, 2009). Penggunaan GFRP tipe lembaran sebagai perkuatan pada balok beton bertulang yang telah terbebani hingga leleh tulangan memiliki kapasitas lentur yang lebih tinggi dari balok aslinya (Djamaluddin & Hino, 2011).…”

Section: Pendahuluanunclassified

Model Hubungan Kapasitas Rekatan Balok Beton Bertulang yang Diperkuat GFRP-S terhadap Lama Perendaman Air Laut

Sultan

Djamluddin

2019

MKTS

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The construction of structures with reinforced concrete materials in coastal environments will face constraints in the form of chloride influences which can lead to a decrease in strength and even damage. One of the most popular reinforcement methods today is using a corrosion resistant Glass Fiber Reinforced Polymer (GFRP) material. This study was conducted to investigate the behavior of GFRP-S rectifying capacity in reinforced concrete beam reinforcement in 1, 3, 6, and 12 months. The test specimens consist of 10 reinforced beams with dimensions (15x20x330) cm that has been reinforced with GFRP-S in the bending area. Beams without immersion symbolized B0, immersion 1, 3, 6, and 12 months each given symbols B1, B3, B6 and B12. The test specimen is loaded statically until it fails. To record the data when testing is installed strain gauge and LVDT. From the result of the research, it can be seen that there is a decrease of GFRP-S rectification capacity in the test specimen after soaking in seawater. The value of the decrease in the capacity of the bonding can be predicted by using the equation = 0 −0.0072 AbstrakPembangunan struktur dengan material beton bertulang pada daerah lingkungan pantai akan menghadapi kendala berupa pengaruh klorida yang dapat mengakibatkan penurunan kekuatan bahkan kerusakan. Salah satu cara perkuatan yang populer saat ini dengan menggunakan material Glass Fiber Reinforced Polymer (GFRP) yang tahan korosi. Penelitian ini dilakukan untuk menyelidiki perilaku kapasitas rekatan GFRP-S pada perkuatan balok beton bertulang yang direndam dalam air laut selama 1, 3, 6, dan 12 bulan. Benda uji terdiri dari 10 buah balok bertulang dengan dimensi (15x20x330) cm yang telah diperkuat dengan GFRP-S pada daerah lentur. Balok tanpa perendaman disimbolkan B0, perendaman 1, 3, 6 dan 12 bulan masing-masing diberi symbol B1, B3, B6 dan B12. Benda uji diberi beban statik sampai gagal. Untuk merekam data-data pada saat pengujian dipasang strain gauge dan LVDT. Dari hasil penelitian terlihat bahwa terjadi penurunan kapasitas rekatan GFRP-S pada benda uji setelah direndam dalam air laut. Nilai penurunan kapasitas rekatan dapat diprediksi dengan menggunakan persamaan = 0 −0,0072 .Kata kunci: GFRP-S, kapasitas rekatan, air laut

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Section: Pendahuluanunclassified

Model Hubungan Kapasitas Rekatan Balok Beton Bertulang yang Diperkuat GFRP-S terhadap Lama Perendaman Air Laut

Sultan

Djamluddin

2019

MKTS

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“…Sultan, conducted research the effect marine environment to the concrete beams Strengthened Using GFRP Sheet. The result of this study also showed that for areas closer to the sea has a greater effect in terms decreasing flexural capacity of the beam which has corrosion on beam [4,5]. FRP materials composed of fibers and matrix, in which the fibers provide strength and rigidity while the matrix holds the fibers together, protect the fibers from abrasion and corrosion and also transfers the pressure to the fiber [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Bonding capacity of the GFRP-S on strengthened RC beams after sea water immersion

Sultan

Djamaluddin

2017

AIP Conference Proceedings

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Abstract. Construction of concrete structures that located in extreme environments are such as coastal areas will result in decreased strength or even the damage of the structures. As well know, chloride contained in sea water is responsible for strength reduction or structure fail were hence maintenance and repairs on concrete structure urgently needed. One popular method of structural improvements which under investigation is to use the material Glass Fibre Reinforced Polymer which has one of the advantages such as corrosion resistance. This research will be conducted experimental studies to investigate the bonding capacity behavior of reinforced concrete beams with reinforcement GFRP-S immersed in sea water using immersion time of one month, three months, six months and twelve months. Test specimen consists of 12 pieces of reinforced concrete beams with dimensions (150x200x3000) mm that had been reinforced with GFRP-S in the area of bending, the beam without immersion (B0), immersion one month (B1), three months (B3), six months (B6) and twelve months (B12). Test specimen were cured for 28 days before the application of the GFRP sheet. Test specimen B1, B3, B6 and B12 that have been immersed in sea water pool with a immersion time each 1, 3, 6 and 12 months. The test specimen without immersion test by providing a static load until it reaches the failure, to record data during the test strain gauge mounted on the surface of the specimen and the GFRP to collect the strain value. From the research it obvious that there is a decrease bonding capacity on specimens immersed for one month, three months, six months and twelve months against the test object without immersion of 8.85%; 8.89%; 9.33% and 11.04%.

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“…The use of GFRP in the form of sheets is currently very common because the price is relatively more economical when compared to other types. Beams reinforced with FRP will increase stiffness, yield limit, and limit strength in studies of reinforcement repairs that have corroded the beam [18]. Other research related to the use of GFRP in beams shows that beams reinforced with FRP as flexural reinforcement in reinforced concrete beams can increase the load up to 75.15% and increase the maximum deflection.…”

Section: Introductionmentioning

confidence: 99%

Influence of Seawater on Strength of Concrete Beams Strengthened With Glass Fiber Reinforced Polymer Sheet

Pratama Akhmad

2024

GEOMATE

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Concrete structures close to seawater cannot be avoided in the construction of current facilities and infrastructure. Concrete submerged in seawater will reduce its strength and increase the corrosion rate of reinforcing steel. With Glass Fiber Reinforced Polymer Sheet (GFRP-S) technology, it is possible to increase the strength of concrete and protect reinforcing steel from the effects of seawater corrosion. Several laboratory studies were carried out on GFRP-S coating as an addition and protection against seawater environmental conditions. However, this research is limited by time and equipment, so it is necessary to carry out a finite element analysis. This modeling uses Abaqus CAE 2017 software. The Abaqus modeling results are then validated with laboratory research to find out what percentage of deviations occur. After optimization, several variables were added to determine the load capacity under different conditions. Some additional research variables are the length of immersion of 12, 24, and 48 months. Apart from the period of time, additional variations were made with the thickness of GFRP-S, which was originally only 1.3 mm, increased to 1.5 mm and 1.8 mm. The results obtained were that the immersion time of 12 months decreased the load capacity by 11.21%, the decrease in the immersion time of 24 months was 14.34%, and the decrease in the immersion time of 48 months was 17.63%. The addition of GFRP-S with a thickness of 2 mm increases capacity by 0.89% and the addition of 5 mm GFRP-S increases capacity by 3.74%. This very significant reduction resulted in the beam being recommended for additional repairs or strengthening.

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Strengthening of Corrosion-Damaged Reinforced Concrete Beams with Glass Fiber Reinforced Polymer Laminates

Cited by 11 publications

References 7 publications

Model Hubungan Kapasitas Rekatan Balok Beton Bertulang yang Diperkuat GFRP-S terhadap Lama Perendaman Air Laut

Model Hubungan Kapasitas Rekatan Balok Beton Bertulang yang Diperkuat GFRP-S terhadap Lama Perendaman Air Laut

Bonding capacity of the GFRP-S on strengthened RC beams after sea water immersion

Influence of Seawater on Strength of Concrete Beams Strengthened With Glass Fiber Reinforced Polymer Sheet

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