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All Journal Jurnal Teknik Techno.Com: Jurnal Teknologi Informasi Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Teras Jurnal JURNAL SIMETRIK IJEBD (International Journal Of Entrepreneurship And Business Development) Jurnal Serambi Engineering Spatial : Wahana Komunikasi dan Informasi Geografi Jurnal Teknik Sipil dan Teknologi Konstruksi CLAPEYRON: Jurnal Ilmiah Teknik Sipil Prosiding Seminar Nasional Teknik Sipil UMS Jurnal Pengabdian Khairun
Rauf, Ichsan
Program Studi Teknik Sipil Universitas Khairun
Religion Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Transportation

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STUDI EKSPERIMENTAL PENGARUH RADIUS PILAR MASSIF TERHADAP POLA GERUSAN LOKAL Anwar Anwar; Dandi Wahab; Ichsan Rauf; Kusnadi Kusnadi; Zulkarnain K. Misbah
JURNAL SIMETRIK Vol 11, No 2 (2021)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/js.v11i2.830

Abstract

Gerusan lokal pada pilar jembatan menjadi salah satu penyebab instabilitas pada struktur jembatan yang berpotensi terhadap kegagalan struktur jembata. Keberadaan pilar yang menopang struktur atas jembatan di badan sungai menyebabkan terjadinya perubahan pola aliran sehingga erosi pada dasar sungai tidak dapat dihindari. Oleh karena itu, upaya untuk mereduksi besaran gerusan lokal harus menjadi perhatian dalam perencanaan struktur pilar, seperti dengan menentukan bentuk geometri pilar jembatan. Penelitian ini bertujuan untuk mengetahui pengaruh radius pilar terhadap potensi gerusan lokal yang terjadi di sekitar pilar tersebut melalui ekperimen di laboratorium. Bentuk pilar yang digunakan adalah pilar massif dengan hidung pilar (pier-nose) berbentuk bulat dengan jari-jari (r) yang bervariasi dari 1;1,5 dan 2. Penampang saluran yang digunakan memiliki panjang 7400 mm, lebar 280 mm dan tinggi 400 mm. Kondisi aliran yang digunakan adalah aliran seragam permanen (steady uniform flow) dengan dua variasi debit, sementara kemiringan dasar saluran yang digunakan tetap sebesar 0.6%. Hasil penelitian ini menunjukkan bahwa semakin besar radius hidung pilar maka akan semakin kecil gerusan lokal yang terjadi, adapun debit memberikan pengaruh sebaliknya.
Karakteristik Mekanis Material Geokomposit Ringan Tanah – EPS Stabilisasi Fly Ash Ichsan Rauf; Tri Harianto; Ardi Arsyad; Astiah Amir
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 7, No 1 (2021): Jurnal Teknik Sipil & Teknologi Konstruksi
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (653.411 KB) | DOI: 10.35308/jts-utu.v7i1.3064

Abstract

This laboratory experiment intended to develop lightweight embankment material in using fly ash as a stabilized agent on soft soil and the addition of expanded polystyrenes (EPS). The fly ash derived from combustion of palm shells and tea in drinks manufacture process. In order to analyze the performance of this material, compressive strength test were applied to several composition and treatment on each sample. The samples were prepared with composition of binding agent between 3%, 5%, 10% and 15% based on samples weight, meanwhile the addition of EPS with composition 10% and 20% based on samples volume. The results presented that the highest compressive strength were founded at 5% of POFA, further it is noted that the inclusion of EPS as a soil subtitution decrease the compressive strength. While, the curing periods have a significance effect on the engineering properties of lightweight materials. 
Analisis Spasial Tingkat Bahaya Banjir Desa Amasing Kali Dengan Hec-RAS 2D Ichsan Rauf
Jurnal Teknik Vol 19 No 2 (2021): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v19i2.188

Abstract

The phenomenon of flooding that occurs in various parts of the world continues to increase, both in terms of frequency and amplitude. Without neglecting the morphology of the region, global climate change and changes in land use as a result of economic growth are the main factors causing this disaster. Understanding flood characteristics, be it discharge, inundation height, and their distribution in an area is very important as a basis for determining flood control efforts. This study aims to analyze the level of flood vulnerability based on the characteristics of the occurred floods. Hydrological and topographical analyzes were performed as the basis for the flow hydraulics calculations performed with Hec-RAS 2D version 5.0.7. The flood distribution simulation results with return periods of 2, 5, 10, and 25 years show that the area of ​​the village that has the potential to be inundated is ± 22.57 ha, ± 37.11 ha, ± 41.81 ha, and ± 47.27 ha, with inundation heights varying between 0.25 m. – 1.50 m, which can be classified as low to high hazard.
Effects of Using Pumice Sand as A Partial Replacement of Fine Aggregate in Lightweight Concrete Mixtures Abdul Gaus; Mufti Amir Sultan; Raudha Hakim; Ichsan Rauf
IJEBD (International Journal of Entrepreneurship and Business Development) Vol 5 No 4 (2022): July 2022
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (347.406 KB) | DOI: 10.29138/ijebd.v5i4.1882

Abstract

Purpose: The advantage of lightweight concrete is to reduce the weight, which is considered the dead load on the structure. This study aims to determine the effect of replacing sand with pumice sand as fine aggregate in lightweight concrete. The substitution affects the compressive strength, split tensile strength, and weight. Design/methodology/approach: The research method is through testing in the laboratory, where the test specimens are cylindrical following SNI with a height of 30 cm and a diameter of 15 cm totaling 50 pieces. The composition ratio between regular and pumice sand is 75%:25%, 50%:50%, 25%:75%, and 0%:100%, respectively. Control of the test object using 100% regular sand. Findings: This research shows that adding pumice sand into the mixture decreases the volume weight. The weight of the volume of concrete produced is < 1,900 kg/m3, which is classified as a lightweight one. Research limitations/implications: The resulting compressive strength of 56.63 kg/cm2 decreased against the control test object by 81.10%. At the same time, the split tensile strength is 1.13 kg/cm2, or a decline of 52.05% from the control test object. Originality/value: This paper is an original work. Paper type: Research paper
Studi Nilai CBR Geokomposit Ringan (Tanah-EPS) Stabilisasi Limbah Aspal Buton Tri Harianto; Sitti Hijraini Nur; Ichsan Rauf; Nurul Marfu'ah
Prosiding Seminar Nasional Teknik Sipil UMS 2019: Prosiding Seminar Nasional Teknik Sipil UMS
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (822.662 KB)

Abstract

Kerusakan jalan sebagian besar disebabkan oleh rendahnya kapasitas dukung dari lapisan pondasinya dalam menerima beban kendaraan yang melintas diatasnya. Hal ini tidak lepas dari sifat material timbunan yang digunakan, baik itu sirtu, kerikil, maupun tanah. Material timbunan yang baik adalah material yang mempunyai daya dukung tinggi namun tidak menjadi beban untuk lapisan dibawahnya. Material timbunan ringan merupakan solusi untuk mereduksi kerusakan jalan akibat lapis pondasi pada konstruksi jalan. Penelitian ini bertujuan mengembangkan material timbunan geokomposit ringan dengan mengganti sebagian tanah lempung dengan expanded polysterene (EPS) yang distabilisasi dengan limbah aspal buton (LAB). Variasi limbah aspal buton yang digunakan sebesar 3%,5%,7% dan 9%, sementara variasi EPS yang diberikan sebesar 0,1% dan 0,2%. Pemeraman benda uji dilakukan selama 7 dan 28 hari. Hasil pengujian menunjukkan bahwa subtitusi tanah dengan EPS mampu mereduksi kepadatan sebesar 20% hingga 30%, adapun nilai CBR meningkat sebesar 7 kali pada EPS 0,15% dan 4 kali pada EPS 0,30%. Berdasarkan hasil tersebut, maka geokomposit ringan tanah-EPS stabilisasi LAB dapat dijadikan sebagai timbunan alternatif baik sebagai lapis pondasi bawah (LPB) pada jalan maupun backfill dibelakang dinding penahan tanah.
Pengaruh Pemeraman terhadap Nilai Kuat Tekan Bebas Tanah Lempung Stabilisasi Limbah Aspal Buton Ichsan Rauf; Lawalenna Samang; Tri Harianto; Ardy Arsyad
Prosiding Seminar Nasional Teknik Sipil UMS 2019: Prosiding Seminar Nasional Teknik Sipil UMS
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (794.046 KB)

Abstract

Tanah lunak menjadi permasalahan utama dalam pelaksanaan konstruksi bangunan sipil karena memiliki daya dukung yang rendah, kuat geser yang rendah dan bersifat kompresibel. Upaya stabilisasi tanah bertujuan untuk meningkatkan nilai-nilai mekanis tersebut, sehingga dapat mendukung konstruksi yang ada diatasnya. Dari berbagai jenis material stabilisasi yang telah ada, seperti : kapur, semen, flyash, alkaline dll., penelitian ini mencoba memanfaatan limbah aspal buton (LAB) sebagai material stabiliasi pada tanah lempung. Pencampuran didasarkan pada berat tanah kering dengan persentase LAB sebesar 3,5,7 dan 9 pada kadar air optimum. Perilaku mekanis diamati melalui pengujian kuat tekan bebas dengan waktu pemeraman selama 7, 14 dan 28 hari. Hasil pengujian menunjukkan bahwa nilai kuat tekan tanah lempung yang distabilisasi dengan LAB menunjukkan peningkatan sebesar 40 kali hingga 64 kali dibandingkan tanah tanpa stabilisasi. Secara umum, pada umur pemeraman 2 minggu merupakan masa peningkatan kekuatan yang kemudian diiukuti peningkatan bertahap dari sampel hingga 28 hari dari waktu yang diamati. Nilai kuat tekan pada pemeraman 7 hari, lebih besar 4 kali sebagai LPB dan 1,2 kali untuk LPA terhadap nilai yang disyaratkan dalam SNI, sementara untuk pemeraman 28 hari nilai kuat tekan lebih besar melampaui nilai minimal yang disyaratkan dalam FHWA.
Persepsi Masyarakat Terhadap Pengangkutan Sampah di Kota Ternate Risky Amelia; Ichsan Rauf; Abdul Gaus; Mufti Sultan Amir; Hernita Pasongli
Jurnal Spatial Wahana Komunikasi dan Informasi Geografi Vol 22 No 2 (2022): Spatial : Wahana Komunikasi dan Informasi Geografi
Publisher : Department Geography Education Faculty of Social Science - Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The enviroment is something that is important for living things, especially humans. The enviroment is used by humans to meet the needs of life, if it does not take care of the enviroment properly it will cause enviromental problems. There are many environmental problems, one of which is the waste problem. The problem of waste is a problem that often occurs in urban areas, one of which is in the city of Ternate. The Ternate City Government needs tochoose the right solution to overcome the problems that occur due to waste, but before making a solution it is necessary to know how the public’s perception of waste transportation in Ternate City is. The research method is descriptive quantitative using a questionnaire distributed to respondents as a research instrument. The sampling technique used in this research is random sampling with a sample of 400 respondents in four districts in Ternate City. The sample of each sub-district amounted to 100 respondents. Data analysis using interpreted percentages. The results showed that the public’s perception of waste transportation in Ternate City was good.
ANALISIS KEMAMPUAN DAN KEMAUAN MEMBAYAR TARIF PADA PENGGUNA JASA MODA TRANSPORTASI KAPAL LAUT (Studi Kasus : Rute Ternate-Sanana) Dahlia Canra; Arbain Tata; Ichsan Rauf
Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Vol 10 No 2 (2022): Jurnal Ilmiah MITSU
Publisher : Fakultas Teknik, Universitas Wiraraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24929/ft.v10i2.1867

Abstract

The mode of transportation in this case is the ocean liner is an alternative transportation that is most often chosen by the public in traveling, one of which is for the Ternate-Sanana route. For this type of transportation is relatively lancer and almost every day available. There are 3 (three) ships operating in a week. One of the important factors in the management of sea transportation services is tariffs. This is the reason people use this mode of transportation, because it is considered quite affordable compared to other modes of transportation. Therefore, this study was conducted to find out Ability To Pay (ATP) and Willingness To Pay (WTP) users of sea ship transportation services with the Ternate-Sanana route. Where later it can be a consideration in evaluating the appropriate tariff. From the data that has been processed, the value of Ability To Pay (ATP) is Rp 471,722,- and the value of Willingness To Pay (WTP) is Rp 229,100,-.
KAJIAN SIMULASI BANJIR DESA DORO DENGAN APLIKASI HECRAS 2D Ridwan Ridwan; Ichsan Rauf; Kusnadi Kusnadi
CLAPEYRON: Jurnal Ilmiah Teknik Sipil Vol 3, No 2 (2022): Clapeyron : Jurnal Ilmiah Teknik Sipil
Publisher : CLAPEYRON: Jurnal Ilmiah Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/clapeyron.v3i2.5392

Abstract

Desa Doro yang telah menjadi salah satu wilayah langganan banjir di Provinsi Maluku Utara. Beberapa media local menyatakan bahwa kejadian banjir didesa ini telah terjadi sejak tahun 2018 hingga saat ini. Kejadian banjir berdampak pada kehidupan masyarakatnya serta memutus jaringan jalan Provinsi, sehingga pengendalian banjir mutlak harus dilakukan. Upaya pengendalian banjir dalam penelitian ini difokuskan pada analisis kapasitas sungai Laka sebagai system drainase alami serta pola sebaran banjir yang terjadi di desa Doro. Dalam studi ini kajian banjir dilakukan dengan beberapa pendekatan analisa, baik analisa morfometri DAS sungai Lasa, pendekatan statistic untuk analisa hidrologi yang bertujuan mentransformasi nilai curah hujan menjadi debit banjir dengan kala ulang 2, 5, 10 dan 25 tahun, serta analisa hidrolika aliran sungai Laka dengan menggunakan perangkat lunakHec-RAS 2D. Hasil penelitian ini menunjukkan bahwa debit banjir untuk kala ulang 2, 5, 10 dan 25 tahun berpotensi menyebabkan terjadinya genangan di desa Doro masing-masing seluas 3.43 ha, 4.23 ha, 4.78 ha dan 5.19 ha. Adapun validasi untuk luas dan tinggi genangan berdasarkan beberapa kejadian banjir sebelumnya menunjukkan deviasi sebesar 1.15 % terhadap model yang dihasilkan. 
Compressive Strength Characteristics of Lightweight Concrete with Modified EPS and Pumice Sand Munawwar M Nur; Kusnadi Kusnadi; Ichsan Rauf
IJEBD (International Journal of Entrepreneurship and Business Development) Vol 5 No 5 (2022): September 2022
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/ijebd.v5i5.1883

Abstract

The environmentally friendly lightweight material is a concept for developing construction material technology. One way is to reduce density by using plastic waste such as Expanded Polystyrene (EPS) as the concrete aggregate. Although on the other hand, the mechanical value has decreased significantly. This research explains the development of lightweight concrete, EPS (BREA), which uses Modified EPS waste as coarse aggregate and pumice sand as fine material, obtained locally from Tidore Island. The mixture composition used in this study was 1 Cement: 2 Sand: 3 MEPS, where the compressive strength test was carried out to see its mechanical behaviour. The research shows that the composition above reduces the volume weight and compressive strength values by 56.12% and 78.46%, respectively, compared to normal concrete.
Co-Authors Abdul Hamid Payapo Amrin Conoras Anwar Anwar Arbain Tata Ardi Arsyad Ardi Basri Ardy Arsyad Dahlia Canra Dandi Wahab Gaus, Abdul Hernita Pasongli Imran Imran Kusnadi Kusnadi Kusnadi Kusnadi Kusnadi Kusnadi Kusnadi Kusnadi Kusnadi Lawalenna Samang Marsaoly, Nurmaiyasa Misbah, Zulkarnain K Mufti Amir Sultan, Mufti Amir Munawwar M Nur Nurul Marfu'ah Nyong Hamin Raudha Hakim Ridwan Ridwan Risky Amelia Risky Amelia Rizal Hafel Salsabila Jaelan Sitti Hijraini Nur Syamsul Syamsul Tri Harianto Tri Harianto