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Effendi, Rizki
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PERAMALAN PASANG SURUT DI SEKITAR PERAIRAN TEMPAT PELELANGAN IKAN (TPI) BANYUTOWO, KABUPATEN PATI, JAWA TENGAH Effendi, Rizki; Handoyo, Gentur; Setiyono, Heryoso
Journal of Oceanography Vol 6, No 1 (2017)
Publisher : Program Studi Oseanografi, Jurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (397.764 KB)

Abstract

Pasang surut adalah fenomena alam yang terjadi pada air laut,  permukaan air laut akan mengalami naik turun secara teratur dan berulang-ulang yang dapat menyebabkan pergerakan partikel massa air dari permukaan sampai ke dasar laut. Dalam memprediksi pasang surut dibutuhkan data amplitudo dan beda fase setiap masing-masing komponen pembangkit pasang surut.Tujuan dari penelitian ini adalah untuk mengetahui karakteristik HHWL, LLWL, MSL, dan tipe pasut; untuk peramalan pasang surut dengan metode World Tides dan MIKE 21 di sekitar perairan TPI Banyutowo selama 5 tahun kedepan; serta untuk mengetahui elevasi lantai dermaga TPI Banyutowo.Penelitian ini dilaksanakan pada tanggal 6 – 20 Mei 2016 di Sekitar TPI Banyutowo, Kabupaten Pati, Jawa Tengah. Data yang digunakan dalam penelitian ini adalah data primer pasang surut yang diambil di lokasi penelitian dan data sekunder pasang surut Tuban bulan Mei 2016 dari BIG; serta data gelombang yaitu nilai Hb, db, dan T yang diperoleh dari data bersama. Metode penelitian yang digunakan adalah metode studi kasus yaitu bertujuan untuk menjelaskan objek yang di teliti sekaligus menjelaskan objek yang di teliti tersebut bisa terjadi. Sedangkan untuk pengambilan data metode yang digunakan adalah metode kuantitatifkarena dibantu dengan menggunakan instrumen atau alat yang dapat mempermudah mendapatkan data. Hasil penelitian dengan menggunakan metode admiraltydiperoleh karakteristik pasang surut di Sekitar Perairan TPI Banyutowo adalah tipe pasut tunggal atau Diurnaldengan nilai formzahl 5,17. Nilai HHWL, LLWL, dan MSL sudah dikoreksi dengan pasang surut Tuban dari BIG yaitu HHWL sebesar 247 cm, LLWL sebesar 115 cm, dan MSL sebesar 181 cm. Peramalan pasang surut menggunakan World Tides dan MIKE 21 memiliki nilai MRE sebesar 2,492% untuk World Tides, dan 20,277% untuk MIKE 21. Serta elevasi lantai dermaga TPI Banyutowo adalah sebesar 3,652 m.
The Use of Expanded Polystyrene (EPS) Waste on the Compressive Strength of Concrete Using Fiber Reinforced Polymer (FRP) Rasendriya, Shafa; Effendi, Rizki; Setiawan, Randy; Purnama, Ikhwan Arief
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 4 (2026): IJRVOCAS - Special Issues - Hybrid International Conference on Construction, Ma
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i4.263

Abstract

The increase in restaurants and online food ordering can increase waste or waste made from Expanded Polystyrene (EPS).  Expanded Polystyrene (EPS) can be used as an additive to concrete because it has properties that are difficult to decompose naturally. Along with the development of the times, many innovations have sprung up in the world of construction to increase the strength of structures. The reinforcement of concrete is done by providing alternative materials that are quite popular, namely Fiber Reinforced Polymer (FRP). This study was conducted to determine the physical properties, mechanical properties of concrete, and the percentage of the use of the most optimum additives that will be applied to the foundation structure using additional materials in the form of Expanded Polystyrene (EPS) with variations of 0%, 1%, 1.5%, 2%, and 2.5% and a layer of Fiber Reinforced Polymer (FRP) as much as 1 layer which will be tested compressively, by looking at the effect of two types of water for curing, namely peat water and normal water with a planned concrete quality of 21.7 MPa using a cylindrical concrete mold 15 cm in diameter and 30 cm high. Concrete compressive strength tests were conducted at 7 days and 28 days of concrete age. Based on the test results, there is an increase in the highest water absorption of concrete, namely in the 28-day normal water immersion variation of 2% EPS + FRP by 4.05% The addition of Expanded Polystyrene (EPS) and Fiber Reinforced Polymer (FRP) in concrete can increase the highest concrete compressive strength, namely in the 7-day NORMAL water immersion variation 1.5% EPS + FRP by 27.54 MPa. While the highest concrete strength value in peat water immersion for 7 days of normal variation is 27.10 MPa.
Co-Authors Gentur Handoyo Heryoso Setiyono ikhwan Arief Purnama Randy Setiawan, Randy Rasendriya, Shafa