EKSPERIMENTAL DAN SIMULASI NUMERIK FATIK SIKLUS RENDAH BETON BERSERAT BAJA

Ramzy, Akbar Kalam (2024) EKSPERIMENTAL DAN SIMULASI NUMERIK FATIK SIKLUS RENDAH BETON BERSERAT BAJA. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pemanfaatan steel fiber pada beton terbukti dapat meningkatkan performa beton, serat baja dalam beton secara aktif dapat membantu mencegah penyebaran retak saat terjadinya microcracking. Dengan hadirnya beton dengan tambahan serat baja (SFRC), terdapat kemungkinan untuk meningkatkan kinerja kelelahan pada tingkat struktural, dibandingkan dengan komponen struktur yang dibuat dari beton konvensional
Dalam penelitian ini beton dengan tambahan serat baja akan di tekan,belah,lentur,geser dan uji low-cycle fatigue . Model numerik berbasis finite element menggunakan 3DLNFEA dibuat untuk memverifikasi hasil pengujian balok berserat baja yang berupa kurva beban - perpindahan .
Hasil pengujian tekan, belah, lentur, dan geser dengan penambahan serat baja dengan rasio VF=1.5% menunjukkan hasil yang paling optimal. Serat baja pada beton terbukti tangguh dalam menahan beban. Pengujian menunjukkan bahwa serat baja efektif dalam mencegah penyebaran retak saat terjadi microcracking. Pada pengujian low-cycle fatigue, beton dengan tambahan serat baja dengan rasio VF=1.5% menunjukkan kemampuan yang baik dalam mengakomodasi beban berulang,dimana penurunan akibat pemberian beban berulang sebanyak 1000 siklus sebesar 16%. Hasil simulasi numerik menggunakan software 3D-NLFEA menunjukkan verifikasi hasil yang baik antara eksperimental dan simulasi numerik.
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The utilization of steel fiber in concrete has been proven to enhance concrete performance. Steel fibers in concrete can actively help prevent crack propagation during microcracking. With the presence of steel fiber reinforced concrete (SFRC), there is the potential to improve fatigue performance at the structural level compared to structural components made from conventional concrete.
In this study, concrete with the addition of steel fibers will be subjected to compression, splitting, bending, shear, and low-cycle fatigue tests. A numerical model based on finite element analysis using 3DLNFEA is created to verify the test results of steel fiber reinforced beams in the form of load-displacement curves.
The results of the compression, splitting, bending, and shear tests with the addition of steel fibers at a ratio of VF=1.5% showed the most optimal outcomes. Steel fibers in concrete have proven their toughness in bearing loads. The testing demonstrated that steel fibers are effective in preventing crack propagation during microcracking. In low-cycle fatigue testing, concrete with the addition of steel fibers at a VF ratio of 1.5% showed good capability in accommodating repeated loads, with a reduction due to 1000 load cycles being 16%. The numerical simulation results using 3D-NLFEA software showed good verification between the experimental and numerical simulation results.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	3D-NLFEA, Fatigue,SFRC, Steel Fiber,3D-NLFEA, Fatigue, SFRC, Steel Fiber
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA418.16 Materials--Testing. T Technology > TA Engineering (General). Civil engineering (General) > TA418.38 Materials--Fatigue. T Technology > TA Engineering (General). Civil engineering (General) > TA440 Concrete--Cracking. T Technology > TA Engineering (General). Civil engineering (General) > TA444 Reinforced concrete
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Akbar Kalam Ramzy
Date Deposited:	08 Aug 2024 08:02
Last Modified:	08 Aug 2024 08:02
URI:	http://repository.its.ac.id/id/eprint/113870

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