Perkuatan balok beton geopolimer menggunakan cfrp = Geopolymer concrete beam strengthening using cfrp

Gandawijaya, Darryl Gregory (2024) Perkuatan balok beton geopolimer menggunakan cfrp = Geopolymer concrete beam strengthening using cfrp. Bachelor thesis, Universitas Pelita Harapan.

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Abstract

Beton geopolimer adalah beton yang menggunakan fly ash sebagai pengganti semen. Hal ini dilakukan karena penggunaan fly ash tergolong lebih ramah lingkungan dibandingkan menggunakan semen yang dimana dalam proses produksinya menghasilkan banyak emisi karbon dioksida. Penggunaan beton bertulang dalam dunia konstruksi sudah dilakukan sejak lama, pada penelitian ini ukuran balok yang digunakan yaitu sebesar 7,5 x 15 x 160 Cm dengan penggunaan tulangan cold roll ukuran diameter 5mm sebanyak 2 tulangan, pemilihan spesifikasi ini dipilih bertujuan agar balok beton under reinforced. Tidak sedikit bangunan beton yang berubah fungsi penggunaanya sehingga struktur menopang beban yang lebih besar dari design yang sudah ditentukan sebelumnya. Tentu bangunan tersebut perlu dilakukan perkuatan agar dapat digunakan dengan aman, perkuatan dengan bahan CFRP (Carbon Fiber Reinforced Polymer) merupakan salah satu cara untuk melakukan perkuatan eksternal dari beton tersebut. Penelitian ini akan meneliti pengaruh dari penggunaan tulangan cold roll dan juga pengaruh dari perkuatan balok beton menggunakan CFRP (Carbon Fiber Reinforced Polymer) guna melihat hasil peningkatan dari perkuatanya. Penelitian ini akan menggunakan tiga sampel balok beton geopolimer yang dari setiap balok akan ada tiga sampel silinder nantinya satu balok di uji tanpa perkuatan dan dua lainya akan diuji dengan perkuatan menggunakan CFRP satu balok dengan penggunaan satu lapis dan satu balok lagi diperkuat menggunakan dua lapis. Design sampel yang digunakan pada penelitian ini yaitu beton geopolimer dengan konsentrasi 8M dengan target kekuatan 25 Mpa, ukuran dari balok beton itu sendiri adalah 7,5 x 15 x 160 Cm dengan design under reinforced dengan tujuan tulangan tarik mengalami leleh baru kemudian beton mengalami kegagalan. Target kekuatan momen ultimate balok itu sendiri sebesar 1,71 kNm. Hasil dari pengujian balok beton tanpa perkuatan didapatkan momen ultimate sebesar 2,15 kNm. Hasil pengujian balok beton dengan satu lapis perkuatan didapatkan momen ultimate sebesar 3,75 kNm. Hasil pengujian balok beton dengan dua lapis perkuatan didapatkan momen ultimate sebesar 5,62 kNm. Seluruh sampel balok mengalami kegagalan secara brittle yang disebabkan oleh tulangan cold rolled, dan pada beton yang diperkuat mengalami kegagalan delamination./Geopolymer concrete is concrete that uses fly ash as a substitute for cement. This is done because using fly ash is considered more environmentally friendly than using cement, which in the production process produces a lot of carbon dioxide emissions. The use of reinforced concrete in the world of construction has been carried out for a long time, in this study the size of the beam used was 7.5 x 15 x 160 cm with the use of cold roll reinforcement with a diameter of 5mm as many as 2 reinforcements. The choice of this specification was chosen with the aim of making the concrete beam under reinforced. Not a few concrete buildings have changed their function so that the structure supports a load that is greater than the predetermined design. Of course, the building needs to be strengthened so that it can be used safely, strengthening with CFRP (Carbon Fiber Reinforced Polymer) material is one way to externally strengthen the concrete. This research will examine the effect of using cold roll reinforcement and the effect of reinforcing concrete beams using CFRP (Carbon Fiber Reinforced Polymer) to see the results of the improvement in the reinforcement. This research will use three samples of geopolymer concrete blocks, from each block there will be three cylindrical samples. One block will be tested without reinforcement and the other two will be tested with reinforcement using CFRP, one block using one layer and the other block reinforced using two layers. The sample design used in this research is geopolymer concrete with a concentration of 8M with a target strength of 25 Mpa, the size of the concrete block itself is 7.5 x 15 x 160 cm with an under reinforced design with the aim of the tensile reinforcement experiencing yielding and then the concrete failing. The target ultimate moment strength of the beam itself is 1.71 kNm. The results of testing concrete beams without reinforcement showed that the ultimate moment was 2.15 kNm. The results of testing concrete beams with one layer of reinforcement showed that the ultimate moment was 3.75 kNm. The test results of concrete beams with two layers of reinforcement showed that the ultimate moment was 5.62 kNm. All beam samples experienced brittle failure caused by cold rolled reinforcement, and the reinforced concrete experienced delamination failure.

Item Type: Thesis (Bachelor)
Creators:
CreatorsNIMEmail
Gandawijaya, Darryl GregoryNIM01021200012gouwdarryl@gmail.com
Contributors:
ContributionContributorsNIDN/NIDKEmail
Thesis advisorWidjajakusuma, JackNIDN0327086805jack.widjajakusuma@uph.edu
Thesis advisorDewobroto, WiryantoNIDN0321106401wiryanto.dewobroto@uph.edu
Uncontrolled Keywords: beton geopolimer; kuat tekan; momen ultimate; cfrp; concrete; geopolymer; compressive strength; moment ultimate; cfrp.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Subject > Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Civil Engineering
Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Civil Engineering
Depositing User: Darryl Gregory Gandawijaya
Date Deposited: 19 Jul 2024 07:29
Last Modified: 19 Jul 2024 07:29
URI: http://repository.uph.edu/id/eprint/64136

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