Permodelan Numerik Perilaku Retak Pada Beton Akibat Non-unifrom Corrosion Induced Cracking Dengan Program Bantu Elemen Hingga

Anwari, Sylviah Rizky Novia (2022) Permodelan Numerik Perilaku Retak Pada Beton Akibat Non-unifrom Corrosion Induced Cracking Dengan Program Bantu Elemen Hingga. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Selama beberapa dekade terakhir korosi tulangan merupakan permasalahan durabilitas pada struktur beton. Pertambahan volume produk korosi akan menghasilkan tekanan ekspansif pada beton sekitarnya dan akhirnya menyebabkan retak pada selimut beton.
Penelitian tesis ini akan berfokus pada pemodelan kerusakan beton akibat adanya korosi. Beban yang digunakan pada tesis ini hanya berfokus pada beban internal akibat ekspansi karat. Pada penelitian ini, korosi akan dimodelkan secara seragam dan tidak seragam untuk melihat perbedaan kedua konfigurasi ini terhadap kerusakan yang terjadi pada beton. Selain itu, akan dilakukan pula simulasi dengan menggunakan variasi terhadap konfigurasi tulang lentur dan keberadaan tulangan sengkang. Simulasi pada tesis ini akan dilakukan dengan menggunakan program bantu 3DNLFEA.
Berdasarkan hasil studi, proses validasi menunjukan bahwa simulasi FEM memberikan prediksi yang sesuai dengan hasil eksperimen dilihat dari hasil pressure dan pola retak korosi. Berdasarkan hasil analisa pola retak ditemukan bahwa model korosi yang tidak seragam menunjukkan pola keretakan yang lebih realistis dibanding korosi seragam. Selain itu, konfigurasi tulangan lentur dan adanya tulangan sengkang juga berpengaruh terhadap besarnya pressure dan pola keretakan yang terjadi.

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Over the last few decades, corrosion of reinforcement is one of durability problems of concrete structures. The increase of rust volume resulting expansive stresses to the surrounding concrete and eventually cause cracks in the concrete covers.
This thesis focused on modelling damage of concrete due to corrosion. The load used in this thesis only focuses on the internal load due to rust expansion. In this study, corrosion was modelled as uniformand non-uniform configuration to investigate the effect between these two configurations to the damage in concrete. In addition, simulations were carried out by varying the configuration of longitudinal bar and the presence of stirrup reinforcement. The simulation in this thesis was performed by using the 3DNLFEA program.
Based on the study results, the validation process shows that FEM provides predictions that are in line with experimental results regarding pressure and corrosion cracking patterns. Based on the crack analysis the non-uniform corrosion shows more realistic cracking pattern compared to uniform corrosion. Furthermore, the configuration of longitudinal rebar and presence of stirrups also affect the overall pressure and cracking pattern of concrete due to corrosion.

Item Type:	Thesis (Masters)
Additional Information:	RTS 620.112 23 Anw p-1 2022
Uncontrolled Keywords:	Korosi, Uniform Corrosion, Non-Uniform Corrosion, Corrosion Induced Crack, 3D-NLFEA, Corrosion, Uniform Corrosion, Non-Uniform Corrosion, Corrosion Induced Crack
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	- Davi Wah
Date Deposited:	23 Apr 2024 08:01
Last Modified:	23 Apr 2024 08:01
URI:	http://repository.its.ac.id/id/eprint/107904

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