Rancang Bangun Material Penyusun Breakwater Berbahan Beton Geopolimer

Arifandi, Muhammad Yusuf (2020) Rancang Bangun Material Penyusun Breakwater Berbahan Beton Geopolimer. Undergraduate thesis, Institut Teknonogi Sepuluh Nopember.

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Abstract

Breakwater adalah salah satu bangunan pelindung pantai yang berfungsi untuk meredam energi gelombang yang datang menuju pantai. Dalam pembangunan breakwater dibutuhkan material yang kokoh dan kuat dalam menghadapi gelombang dan arus laut. Material yang sering digunakan sebagai material penyusun breakwater adalah material buatan yang terbuat dari beton. Penggunaan beton konvensional sebagai bahan material penyusun breakwater dapat menyebabkan tingkat pencemaran udara semakin meningkat sehingga diperlukan alternatif bahan material yang lebih ramah lingkungan. Salah satu contoh bahan alternatif yang dapat digunakan adalah beton geopolimer. Dalam penelitian ini dilakukan analisa spesifikasi teknis beton geopolimer sebagai bahan material penyusun breakwater, menentukan bentuk dan ukuran material penyusun breakwater, melakukan analisa skala model dan melakukan pengujian model fisik material penyusun breakwater. Beton geopolimer metode pencampuran terpisah menurut penelitian (Wibowo, 2019) memiliki nilai kuat tekan sebesar 40,34 MPa dan memiliki setting time sebesar 195 menit. Dapat disimpulkan bahwa material beton geopolimer memiliki potensi sebagai bahan material penyusun breakwater, karena memiliki nilai kuat tekan > 35 MPa sesuai dengan persyaratan beton di lingkungan air laut pada SNI 2847 – 2013. Bentuk material penyusun breakwater yang digunakan pada penelitian ini adalah polypod. Dalam pembuatan contoh benda uji, diasumsikan tinggi gelombang rencana sebesar 5 m. Dari perhitungan kebutuhan berat material didapatkan berat prototipe polypod sebesar 32909,58 kg. Untuk melakukan pengujian model fisik polypod, digunakan skala 1:50. Dengan skala tersebut didapatkan berat model uji yang digunakan sebesar 263,277 gram. Pengujian stabilitas breakwater belum dapat dilakukan, karena terkendala pada proses pengembangan alat uji akibat adanya pandemi covid-19. Sehingga nilai koefisien stabilitas material polypod belum dapat ditentukan. ============================================================ ============================================================ A breakwater is one of the beach protective buildings that serve to dampen the wave energy that comes towards the beach. The construction of breakwater requires a sturdy and strong material to withstand waves attack and ocean currents. One of the materials that are often used as a breakwater’s material is an artificial unit made of concrete. The use of cementitious concrete as an artificial unit material can cause an increase in air pollution so it requires an alternative material that more environmentally friendly. One of the alternative materials that can be used is geopolymer concrete. Analysis of geopolymer concrete technical specifications as a material of the artificial units, determine the shape and size of the artificial unit, scale analysis physical test model of the artificial units, and physical model test of the artificial unit are conducted in this research. The Geopolymer concrete specification according to the research of (Wibowo, 2019) has a compressive strength at 40.34 MPa and the setting time is 195 minutes. It can be concluded that the Geopolymer concrete material is a potential artificial unit material because the compressive strength is more than 35 MPa that according to concrete requirements in the seawater environment in SNI 2847 – 2013. The form of the breakwater constituent material used in this study was polypods. In the manufacture of prototype objects, wave height assumed 5 m. From the calculation of the weight of the polypod prototype, it required polypod with 32909.58 kg of mass. To conduct physical models testing polypods, it used a scale of 1:50. The weight of the polypod model test used is 263.277 gr. Physical flume test for the polypod model test cannot be performed, because it is constrained by the test equipment development process due to the Covid-19 pandemic. So the coefficient stability of polypod material can not be determined.

Item Type: Thesis (Undergraduate)
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering > TC1665 Offshore structures--Materials.
T Technology > TC Hydraulic engineering. Ocean engineering > TC333 Breakwaters
T Technology > TH Building construction > TH1461 Concrete construction.
Divisions: Faculty of Vocational > Civil Infrastructure Engineering
Depositing User: Muhammad Yusuf Arifandi
Date Deposited: 26 Aug 2020 02:06
Last Modified: 26 Aug 2020 02:06
URI: http://repository.its.ac.id/id/eprint/80935

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