Very High Performance Concrete (VHPG) Sebagai Bahan Perbaikan Beton

Agustin, Andini Dwi (2018) Very High Performance Concrete (VHPG) Sebagai Bahan Perbaikan Beton. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam pembuatan material konstruksi dengan bahan beton sering kali terjadi kegagalan struktur atau kerusakan berupa crack (retak) karena sifat beton yang tidak dapat menahan tarik. Berdasarkan penelitian oleh Andry, dkk (2011) retak pada beton menyumbang persentase 50% pada kegagalan struktur. Kerusakan ini dapat kita temukan pada elemen struktur beton seperti kolom, balok, pelat, dan dinding beton. Dari prespektif ilmu material, perlu adanya produk perbaikan beton dengan durabilitas tinggi dan rendah biaya perawatan. Teknologi very high performance grout (VHPG) yang merupakan salah satu bahan perbaikan beton berupa grout (campuran semen, air dan agregat khusus) yang berkekuatan tinggi dan memiliki permeabilitas yang rendah, serta workability yang mudah walaupun memiliki slump yang kecil. Namun penggunaan VHPG ini ditinjau dari dari segi biaya dinilai kurang ekonomis karena semua material yang digunakan pada umumnya merupakan produk yang berasal dari luar negeri. Dalam penelitian ini diusulkan penggunaan material lokal semen Gresik, silica fume, pasir silika Belitung dan serbuk kaca dalam campuran grout sebagai material perbaikan struktur beton dengan mutu minimal 100 MPa pada 28 hari. Campuran yang didapatkan dalam penelitian ini per m3adalah semen 712 kg/m3, silica fume 231 kg/m3, pasir silika 1020 kg/m3, serbuk kaca 211 kg/m3, superplasticizer 31 kg/m3, steel fiber 156 kg/m3, dan accelerator 30 kg/m3. Dari penelitian ini diketahui hasil kuat tekan benda uji tanpa serat lebih tinggi daripada benda uji menggunakan serat dengan nilai masing-masing adalah 128,74 MPa dan 123,04 MPa. Serta diketahui pengaruh penggunaan material lokal terhadap workability, kuat tarik belah (splitting test), permeabilitas, dan shrinkage dalam very high performance grout. ======================================================================================================== In the manufacture of construction materials with concrete materials often occur structural failure or damage in the form of cracks due to the nature of concrete that can not restrain tensile loads. Based on research by Andry, et al (2011) cracks in concrete accounted for a 50% percentage in structural failure. This damage can be found in elements of concrete structures such as columns, beams, plates, and concrete walls. From the perspective of materials science, the need for concrete repair products with high durability and low maintenance costs. Very high performance grout (VHPG) technology, which is one of the best concrete improvements in the form of high strength, low permeability, and high workability of concrete in the form of grouting (cement, water and aggregate). However, the use of VHPG is in terms of cost is considered less economical because all the materials used in general are products that come from abroad. In this research, it is proposed the use of local material of Gresik cement, silica fume, Belitung silica sand and glass powder in grout mix as material of concrete structure improvement with minimum strength 100 MPa at 28 days. The mixture obtained in this study per m3 is 712 kg/m3cement, silica fume 231 kg/m3, silica sand 1020 kg/m3, glass powder 211 kg/m3, superplasticizer 31 kg/m3, steel fiber 156 kg/m3, and accelerator 30 kg/m3. From this research is known result of compressive strength of test object without fiber higher than specimen with fiber with value respectively is 128,74 MPa and 123,04 MPa. Also known the effect of the use of local materials on workability, splitting test, permeability, and shrinkage in very high performance grout.

Item Type: Thesis (Undergraduate)
Additional Information: RSS 624.183 4 Agu v-1 3100018077085
Uncontrolled Keywords: Grout, kuat tekan, kuat tarik belah, material-lokal, pasir silika, permeabilitas, serbuk kaca, shrinkage, Compressive test, glass powder , grout, , splitting test, local-materials, permeability, silica sand.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
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) > TA441 Aggregates
Divisions: Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User: Andini Dwi Agustin
Date Deposited: 21 Oct 2020 06:36
Last Modified: 01 Dec 2020 06:47
URI: https://repository.its.ac.id/id/eprint/55762

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