Akbar, Fachreza (2017) Staple Shape Rebar as Flexural Strength Repair on Preloaded Reinforced Concrete Beam. Magister thesis, Universitas Brawijaya.
Abstract
Tulangan berbentuk staple sudah dikenal sebagai alat perbaikan pada struktur dinding dan lantai, dimana sering kali dikombinasikan dengan teknik penambalan. Tenik tambal juga telah banyak digunakan baik dengan penambahan perkuatan atau tanpa tambahan perkuatan. Kemudahan penggunaan dan nilai ekonomis membuat sistem perbaikan tersebut memiliki potensi untuk digunakan dalam perbaikan beton bertulang yang mengalami kerusakan. Pada studi ini, dua metode perbaikan tersebut dipadukan menjadi satu kesatuan sistem perbaikan. Pengamatan dan analisis juga dilakukan untuk mengetahui perilaku dari sistem perbaikan yang diaplikasikan pada struktur asli. Kerusakan pada struktur dibuat dengan membentuk sendi plasti ditengah bentang dengan pembebanan awal. Perbaikan yang dilakukan dengan metode tersebut menghasilkan peningkatan kapasitas 22-32% lebih tinggi dari balok normal untuk balok yang diperbaiki dengan tulangan staple panjang 700mm. Sedangkan balok yang diperbaiki dengan panjang tulangan 400mm mengalami peningkatan kapasitas sebesar 4-8%. Hasil tersebut juga dibandingkan dengan balok yang diperbaiki menggunakan tulangan berbentuk lurus. Hasil observasi menunjukkan pada balok yang diperbaiki menggunakan tulangan berbentuk lurus selalu mengalami penurunan grafik secara tiba-tiba, dengan nilai beban yang lebih rendah. Berdasarkan pengamatan rambatan retak, perilaku dari balok yang diperbaiki dengan tulangan berbentuk staple menunjukkan perilaku kegagalan akibat kombinasi geser-lentur. Retak lebar dengan arah diagonal selalu muncul sebelum balok mengalami kegagalan struktur. Di sisi lain, balok dengan tulangan perbaikan lurus menunjukkan adanya perilaku kegagalan akibat debonding dan bondslip
English Abstract
Staple shape rebar is widely known as repair device in repairing surface structure such wall and floor slab combined with patching. Patching of reinforced concrete beam also has been widely used in repair practice whether by addition of strengthening device or without any addition of strengthening device. The easiness of use and cheap price make this repair system has potential to use in deteriorate reinforced concrete beam. In this study, the two repair procedures have been applied as one repair system and the behavior of repair system correspond to the repaired substrate system is observed and analyzed. With deteriorate of the reinforced concrete members was built by a development of plastic hinge in the mid-span area with three point bending load, staple repair rebar combined with patching mortars has resulting 22-32% higher load capacity during post-repair reload than normal beam for the specimens with 700mm repair rebar. While shorter repair rebar with 400mm long showing 4- 8% higher load. The results of repaired specimens with staple shape repair rebar were also compared with repair system with straight shape rebar. The result shows that specimens repaired with straight shape rebar always show sudden drop of load curve during collapse process. Specimens repaired with straight shape rebar also have lower load capacity than staple shape rebar with the same length of repair system. According to crack path observation, behavior of the repaired specimens with staple repair rebar shows that collapse is caused combination of shear-flexural mechanism. Wide diagonal cracks were always occurs before the repaired specimens is start to collapse. In the other hand, specimens with straight shape rebar showing debonding and bond-slip mechanism during collapse process.
| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | TES/693.54/AKB/s/2017/0418052256 |
| Uncontrolled Keywords: | REINFORCED CONCRETE CONSTRUCTION. STAPLE SYSTEM, CONCRETE BEAMS |
| Subjects: | 600 Technology (Applied sciences) > 693 Construction in specific types of materials and for specific purposes > 693.5 Concrete > 693.54 Concrete with reinforcement (Ferroconcrete) |
| Divisions: | S2/S3 > Magister Teknik Sipil, Fakultas Teknik |
| Depositing User: | Nur Cholis |
| Date Deposited: | 03 Jan 2019 03:03 |
| Last Modified: | 21 Oct 2021 01:56 |
| URI: | http://repository.ub.ac.id/id/eprint/162456 |
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3 FOREWORDS.pdf Download (12kB) | Preview |
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2 SUMMARY.pdf Download (79kB) | Preview |
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1 RINGKASAN.pdf Download (10kB) | Preview |
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5 TABLE OF FIGURES.pdf Download (99kB) | Preview |
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6 TABLE OF TABLES.pdf Download (58kB) | Preview |
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4 TABLE OF CONTENTS.pdf Download (83kB) | Preview |
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8 SYMBOL AND NOTATION.pdf Download (57kB) | Preview |
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7 APPENDIX LIST.pdf Download (60kB) | Preview |
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9 APPENDIX.pdf Download (1MB) | Preview |
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CHAPTER 2 - LITERATURE REVIEW.pdf Download (1MB) | Preview |
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BAGIAN DEPAN.pdf Download (1MB) | Preview |
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CHAPTER 3 - CONCEPTUAL FRAMEWORK.pdf Download (126kB) | Preview |
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CHAPTER 4 - RESEARCH METHOD.pdf Download (2MB) | Preview |
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CHAPTER 5 - RESEARCH RESULT AND ANALYSIS.pdf Download (4MB) | Preview |
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CHAPTER 6 - CONCLUSION AND SUGGESTION.pdf Download (58kB) | Preview |
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Fachreza Akbar.pdf Download (11MB) | Preview |
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DAFTAR PUSTAKA.pdf Download (55kB) | Preview |
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