Effects Of Pva Fiber On Bond Strength Improvement In Geopolymer Concrete

Kefiyalew, Zerfu (2017) Effects Of Pva Fiber On Bond Strength Improvement In Geopolymer Concrete. Masters thesis, Institut Teknologi Sepuluh Nopember.

[img]
Preview
Text
3115202701-Master Thesis(S2).pdf - Published Version

Download (3MB) | Preview

Abstract

Beberapa penelitian telah dilakukan untuk memahami perilaku lekatan antara tulangan dan beton dalam beton semen Portland (OPC). Namun, beberapa hasil pada penelitian ini, disajikan dalam kuat lekat beton geopolimer (GPC). Dalam penelitian ini, dipelajari pengaruh serat alkohol polivinil (PVA) pada kuat lekat beton geopolimer. Tujuan utama dari penelitian ini adalah untuk menyelidiki bagaimana pengaruh kinerja dari variasi jumlah kandungan serat PVA. Sebagai hasil, diterapkan serat PVA dari 0%, 0,2%, 0,4%, 0,6% dan 0,8% berdasarkan volume dari beton. Hasil penelitian menunjukkan bahwa penerapan serat PVA meningkatkan ketahanan lekatan antara tulangan dan matriks beton. Berdasarkan investigasi juga menunjukkan bahwa menggunakan serat PVA di beton geopolimer meningkatkan kuat lekat hingga 25,9% dari beton tanpa serat PVA. Berdasar presentasi serat PVA yang berbeda, spesimen dengan 0,6% serat PVA menghasilkan kondisi maksimum baik kuat tekan dan kuat lekatnya. Sebagai fakta, studi perbandingan menunjukkan bahwa beton geopolimer menghasilkan kuat lekat lebih tinggi dari beton OPC. Selain itu, dilakukan studi validitas dari hasil permodelan elemen hingga (FEA) dengan eksperimen uji tarik untuk beton geopolimer tanpa serat. Kuat lekat dari hasil eksperimen memiliki deviasi sebesar 0,38% dari tegangan geser ultimate yang diperoleh dalam analisis FEA. ================================================================================================================== Several researches were conducted to understand the bond behavior between reinforcing bars and surrounding concrete in Portland cement concrete. However, few results were presented on bond strength of geopolymer concrete (GPC). In this research, the effect of polyvinyl alcohol (PVA) fiber on bond strength in geopolymer concrete was studied. The main aim of this study was to investigate how bond performance affected by varying the amount of PVA fiber content. As a result, PVA fiber of 0%, 0.2%, 0.4%, 0.6% and 0.8% by volume of concrete were applied. Results showed that application of PVA fiber improves the bond resistance between reinforcing bar and concrete matrix. It has been investigated that using of PVA fiber in geopolymer concrete improves up to 25.9% bond strength from concrete without PVA fiber. From different percentage of PVA fiber used, the specimen with 0.6%PVA fiber resulted both maximum compressive and bond strength. A comparative study reveals that geopolymer concrete shows higher bond strength than OPC concrete. Furthermore, it has been studied that FEA result confirms the validity of the experimental pullout test for geopolymer concrete without fiber. The bond strength from experimental result deviates by 0.38% from the ultimate shear stress obtained in FEA analysis.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Bond strength, Finite element analysis, Geopolymer concrete, Pullout test, PVA fiber.
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA440 Concrete--Cracking
T Technology > TA Engineering (General). Civil engineering (General) > TA681 Concrete construction
T Technology > TH Building construction
Divisions: Faculty of Civil Engineering and Planning > Civil Engineering > (S2) Master Theses
Depositing User: KEFIYALEW ZERFU
Date Deposited: 30 Mar 2017 02:22
Last Modified: 05 Mar 2019 07:31
URI: http://repository.its.ac.id/id/eprint/2550

Actions (login required)

View Item View Item