Kwandou, Robby
Program Studi Teknik Sipil Universitas Hasanuddin Makassar Jl. Perintis Kemerdekaan KM 10 Makassar.

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Kapasitas Rekatan GFRP-S pada Balok Beton Akibat Perendaman Air Laut Djamaluddin, Rudy; Irmawaty, Rita; Kwandou, Robby
Jurnal Teknik Sipil Vol 22, No 1 (2015)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (872.409 KB) | DOI: 10.5614/jts.2015.22.1.3

Abstract

Abstrak. Glass Fiber Reinforced Polymer Sheet (GFRP-S) merupakan material perkuatan struktur yang non-korosif dan telah banyak digunakan untuk beragam jenis konstruksi, baik untuk gedung maupun struktur yang terekspos di lingkungan laut. Sifat non-korosif ini tentunya sangat menguntungkan apabila diterapkan pada konstruksi yang terekspos di lingkungan laut. Oleh karena itu dilakukan studi untuk menganalisis pengaruh air laut terhadap kapasitas rekatan GFRP-S. Benda uji berupa 12 balok beton berukuran 10 cm x 12 cm x 60 cm dengan perkuatanGFRP-S. Tiga balok tidak direndam dalam laut sedangkan tiga balok masing-masing direndam dalam laut selama 1 bulan, 3 bulan dan 6 bulan. Pemeriksaan dilakukan pada beban ultimit, lendutan, regangan GFRP-S dan regangan beton. Dari studi ini dapat disimpulkan bahwa terjadi penurunan nilai beban ultimit balok dan kapasitas rekatanGFRP-S seiring dengan meningkatnya waktu rendaman. Penurunan kapasitas lentur disebabkan oleh penurunan kapasitas rekatan GFRP-S. Hasil analisis menunjukkan terjadi penurunan kapasitas rekatan GFRP-S sekitar 15% setelah perendaman 6 bulan.Abstract. Glass Fiber Reinforced Polymer Sheet (GFRP-S) is the non-corrosive material used for strengthening and has been widely used for many kinds of structures, such as buildings and structures exposed to marine environment. Its noncorrosive property is suitably purposed for the application of structures exposed to marine environment. Therefore, this study was conducted for analyzing the effect of sea water on bonding capacity of GFRP-S. Specimens were 12 concrete beams of 10 cm x 12 cm x 60 cm strengthened with GFRP-S. Three beams were not submersed in the sea while three beams were each submersed in the sea for 1 month, 3 months and 6 months, respectively. Testing was conducted on the ultimate load, the deflection, the GFRP-S strain and the concrete strain. From this study, it can be concluded that both the ultimate load and the bonding capacity of GFRP-S decreases along with the increasing of submersion period. The flexural capacity was decreased due to the decreasing of the bonding capacity of GFRP-S. The result of analysis indicates that the bonding capacity of GFRP-S decreased about 15% after submersed for 6 months in sea water.