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Gorontalo Journal of Infrastructure and Science Engineering
Published by Universitas Gorontalo
ISSN : 26156962     EISSN : 26144638     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Gorontalo Journal of Infrastructure & Science Engineering (GOJISE) adalah jurnal ilmiah berkala yang diterbitkan oleh Fakultas Teknik Universitas Gorontalo dua kali dalam setahun. Jurnal ini memuat artikel hasil penelitian, penelitian terapan dan artikel penelaahan yang berkaitan dengan perkembangan ilmu keteknikan yang meliputi keteknik sipilan, Mesin dan manufaktur, arsitektur dan perkotaan
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Articles 65 Documents
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Analisa Agregat Halus Pasir Zona III Dengan Agregat Kasar Ukuran 20 mm Dan 40 mm Untuk Uji Kuat Tekan Mutu Beton Pada Campuran Beton Normal Nasir Bumulo; Nur Windawaty Rusnadin
Gorontalo Journal of Infrastructure and Science Engineering Vol 1, No 1 (2018): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (720.471 KB) | DOI: 10.32662/gojise.v1i1.136

Abstract

Concrete is a construction material that is widely used in building structutre work in indonesia becouse it has many benefits. Its compactness and cooperation arragement is very influential toward the compressive strength. One factor is the compectness of concrete fine aggregate and coarse aggregate. The aim of this research was to find out compessive strength of concrete at 28 days using sand material zone III with pebbles the size of 20 mm and 40 mm in a normal concrete mix.The reseach was using the quantitaive testing method. The independent variable of this research was the composition of the mixture, and dependent variable was in the form of concrete quality. The control variable was the material being used. The data collection was done by conducting laboratory testing based on SNI and PBI. The data analysis was done by calculating the average of the test results are then compered with SNI and PBI.The result of concrete research with sand material of zone III and gravel of 20 mm and 40 mm was observed at 28 days old showed a compressive strength value of 311,89 Kg / cm2. Then the concrete sample with sand material of zone III and pebble size 40 mm shows the value of compressive strength of 334,46 Kg / cm2. From this result, it can be concluded that the mixture of sand zone III with gravel measuring 40 mm has a value of concrete compressive strength greater than 20 mm.
Penerapan Konsep Full Pedestrian Mall pada Koridor Perdagangan Studi Kasus : Jalan Soeprapto Kota Gorontalo Fendy Faizal Gobel
Gorontalo Journal of Infrastructure and Science Engineering Vol 1, No 1 (2018): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (528.56 KB) | DOI: 10.32662/gojise.v1i1.143

Abstract

The street space in the trading corridor looks irregular. This is because public space is contested by many parties, such as road users, street hawkers, pedestrians and parking users as well as formal traders. This encourages the birth of behavior adaptation to the environmental changes that occur, so as to establish the business territoriality to reinforce the physical and non-physical boundaries that have the potential to cause conflict territory use of public space. This study aims to design the trade corridor with full pedestrian mall concept so as to create a safe and comfortable shopping space. From this research is expected to be obtained steps to reduce conflict and optimize function of the space. Object of research in the form of observation of public space component that is physical setting of space (milleu), setting activity (activity) and human behavior (social setting). The method used is qualitative with Rationalistic approach. At the design stage do the design experiment with trial and error of design concept through transformation process until the embodiment of the formation in 2 or 3 dimension.
TINJAUAN KADAR ASPAL AC-BC PADA RUAS JALAN RIVERSIDE MENGGUNAKAN METODE CENTRIFUGE EKSTRACTION Ilyas Ichsan
Gorontalo Journal of Infrastructure and Science Engineering Vol 1, No 2 (2018): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (364.429 KB) | DOI: 10.32662/gojise.v1i2.434

Abstract

Then findings pf ectraction gradation in table reveal that there is an asphalt is used ≥ and ≤ plan asphalt content in mixig JMF (Job Mix Formula) / so the rules is not appropriate with the specification. It shows that the laston mix will be influence. The findings of asphalt content or ectraction reveal that the mix of AC-BC which used in the field each point/sta. The collection sample score is still above and less from the specification requirement of JMF (Job Mix Formula) which is 5,75 %.
Pengembangan Sistem Kontrol Alat Penebar Pakan Ikan Otomatis Dengan Sumber Energi Matahari Kardiman Kasiadi; Dono Martono; Rizal Hanifi; Eri Widianto
Gorontalo Journal of Infrastructure and Science Engineering Vol 2, No 1 (2019): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.41 KB) | DOI: 10.32662/gojise.v2i1.518

Abstract

Pada penelitian ini menggunakan metode Research and Developement (R&D), menganalisa kekurangan yang ada pada alat penebar pakan ikan otomatis yang sudah ada kemudian mengembangkannya, tahapan pengembangan alat ini meliputi perencanaan, perangcangan, perakitan, penerapan dan pengaplikasian. Alat penebar pakan ikan sebelumnya hanya menggunakan baterai/aki isi ulang dengan cara charger, perlu ditambahkan solar panel supaya pengisian aki menjadi otomatis dan menambahkan sistem monitoring baterai sebagai pengontrol baterai jika terjadi drop tegangan, karena kelemahan panel surya adalah tergantungnya pada cuaca, jika hujan akan mengganggu pengecasan, sistem monitoring baterai akan bekerja pada tegangan 10 volt dan akan mengirim sms. Pemasangan solar panel pada alat penebar pakan ikan otomatis dengan output daya rata–rata   12,85 Watt dan Arus rata-rata  0,94 Ampere, pengujian sistem monitoring baterai mencari nilai drop tegangan, didapat nilai 10 volt sebagai nilai drop tegangan yang dijadikan set point pada program. Sistem  SMS akan aktif ketika tegangan baterai 10 volt. In this study using the Research and Developement (R & D) method, analyzing the deficiencies in the existing automatic fish feed spreader and then developing it, the stages of developing this tool include planning, handling, assembly, application and application. The previous fish feed spreader only used a battery / rechargeable battery by means of a charger, it needs to be added with solar panels so that the charging of the battery becomes automatic and adds a battery monitoring system as a battery controller if there is a voltage drop, because the weakness of the solar panel is dependent on the weather, if it rains interfere with charging, the battery monitoring system will work on a 10r output of 12.85 Watts and an average current of 0, 94 Ampere, testing the battery monitoring system looking for voltage drop values, obtained a value of 10 volts as the voltage drop value which is used as a set point in the program. The SMS system will be active when the battery voltage is 10 volts
Sifat Mekanik Komposit Aluminium ADC12-SiC-Mg Menggunakan Semi Solid Stir Casting dengan Variasi Penambahan SiC dan Mg Eri Widianto
Gorontalo Journal of Infrastructure and Science Engineering Vol 2, No 1 (2019): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (462.426 KB) | DOI: 10.32662/gojise.v2i1.528

Abstract

Telah dilakukan penelitian tentang pengaruh penambahan SiC dan Mg terhadap sifat mekanik komposit Aluminium ADC12. Komposit ADC12-SiC-Mg dibuat menggunakan metode semi solid stir casting dengan memanfaatkan matrik aluminium ADC12 bekas sepatu rem. Karakterisasi sifat mekanik komposit Aluminium ADC12-SiC-Mg berupa kekerasan, kekuatan tarik dan elongation (%EL), serta kekuatan impak dengan 3 variasi sampel A0, A1 dan A2. Hasil penelitian menunjukkan bahwa penambahan SiC dan Mg meningkatkan kekerasan komposit ADC12-SiC-Mg dari 86,1 HRB, 95,8 HRB sampai 105,6 HRB. Kekuatan tarik rata-rata diperoleh nilai tertinggi pada penambahan SiC 10 wt% dan Mg 5 wt% sebesar 120,7 MPa, dan elongation (%EL) maksimum sebesar 2,03. Kekuatan impak juga meningkat seiring dengan penambahan persentase SiC dan Mg. Kekuatan impak rata-rata diperoleh harga tertinggi sebesar 1,26 Nm. Komposit Aluminium ADC12-SiC-Mg dari limbah aluminium sepatu rem ini diharapkan dapat diaplikasikan diberbagai bidang khususnya dibidang otomotif.
Pengaruh gradasi agregat terhadap nilai karakteristik aspal beton (ac-bc) Beyzulnandar Jauhari; Nurhayati Doda
Gorontalo Journal of Infrastructure and Science Engineering Vol 2, No 1 (2019): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.737 KB) | DOI: 10.32662/gojise.v2i1.524

Abstract

Hasil penelitian gradasii menunjukkan bahwa Campuran AC-BC yang di gunakan di lapangan dengan masing masing titik/Sta pengambilan sample nilainya masih di atas dan kurang dar isyarat spesifikasi dan JMF(Job Mix Formula)  yaitu 5.75%.Pada hasil gradasi Agregat material Klas B dan Klas A masing  masing titik/Sta tidak memenuhi atau melebihi syarat spesifikasi dan JMD  (Job Mix Design).Dimana telah di tunjukkan dari hasil penelitian masing titik/sta   Material KlasB 95.40 % - 92.67%  Dan pada  Material Klas A 60.79% - 50.70%..       Pada hasil pengujian core drill menunjukkan bahwa ketebalan aspal pada masing masing titik/Sta pengambilan sample  yang di lapangan tidak sesuai dengan spesifikasi yaitu nilainya masih  di atas dan kurang dari ketentuan spesifikasi.Dilihat dari masing  masing titik/Sta pengambilan sample pengujian yaitu 5.75 % .Maka dapat di lihat nilai tersebut tidak memenuhi syarat. The gradation result showed that the mixing of AC-BC which used in this research with each point/Sta of collecting sample is still above and less from the specification requirements and JMF (Job Mix Formula) 5,75%In gradation result aggregate of material class B and class A, each point/Sta is not fulfill or more than the specification requirements and JMD (Job Mix Design). It showed that from the research result each point/Sta material class B 95,40% - 92,67% and on Material class A 60,79% - 50,70%.From core drill test result showed that the asphalt thickness in each point/sta of collecting samples in the field is not appropriate with specification which the value is above and less from the specification requirements. It can be seen from each point/Sta which the test is 5,75%. So the value is not appropriate with the requirements
Rancang Bangun Mesin Hotpress Untuk Pembuatan Papan Komposit Berbasis Limbah Sekam Padi Dan Plasik Hdpe Rizal Hanifi
Gorontalo Journal of Infrastructure and Science Engineering Vol 2, No 1 (2019): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (555.679 KB) | DOI: 10.32662/gojise.v2i1.533

Abstract

Telah dilakukan pembuatan mesin hotpress untuk membuat papan komposit berbahan dasar plastik HDPE dan limbah sekam padi, dengan tujuan untuk memanfaatkan limbah/sampah pada lingkungan masyarakat. Hal ini dikarenakan bahan yang digunakan untuk menghasilkan papan adalah limbah pertanian yaitu sekam padi dan plastik HDPE. Proses Pengepresan mesin hotpress papan komposit ini mengunakan sistem hidrolik secara manual, mesin ini tidak membutuhkan arus listrik pada sistem hidrolik untuk pengoprasiannya tetapi membutuhkan tenaga manusia. Tenaga manusia yang mengungkit tuas akan menghasilkan tekanan pengepressan dan dengan menggunakan mekanisme pemanas pada cetakan maka akan menghasilkan papan komposit. Parameter lain yang diamati pada perancangan ini yakni hasil pengepresan papan komposit dengan variasi temperatur pemanasan antara 150oC, 170 oC dan 185 oC. Dari hasil perancangan mesin hotpress hidrolik yang dibuat memiliki tekanan sampai dengan 20 ton dan temperatur pemanasan 120 oC sampai dengan 200 oC. Mesin hotpress ini memiliki dimensi lebar 60 cm, Tinggi 130 cm dan panjang dies papan komposit 54 cm, lebar 20 cm, jumlah elemen pemanas yang digunakan 4 buah, selain itu hasil hasil foto micro terlihat bahwa papan komposit yang dihasilkan paling baik terlihat pada temperatur 150oC dan 170 oC. selain itu penggunaan sekam padi dan plastik HDPE bisa menjadi digunakan untuk bahan pembuatan papan komposit. Hot press machines have been made to make composite boards made from HDPE plastic and rice husk waste, with the aim of utilizing waste in the society environment. This is because the material used to produce boards is agricultural waste, namely rice husk and HDPE plastic. Pressing the hot press machine composite board using a hydraulic system manually, this machine does not require electric current in the hydraulic system for operation but requires human power. Human power that levers the lever will produce pressing pressure and by using a heating mechanism in the mold will produce a composite board. Other parameters observed in this design are the composite board presses with variations in heating temperature between 150oC, 170oC and 185oC. The results of the design of hydraulic hot press machines made have pressures up to 20 tons and heating temperatures of 120 oC to 200 oC. This hot press machine has dimensions of 60 cm in width, 130 cm in height and composite board dies of 54 cm in length, 20 cm in width, 4 pieces of heating elements are used, besides the results of micro photo shows that the composite board is best seen at 150 oC and 170 oC. other than that the use of rice husks and HDPE plastic can be used for composite board materials
Pengaruh pH Larutan Terhadap Nukleasi dan Pertumbuhan Kristal Barium Sulfat Didalam Pipa Beraliran Laminar: Pengamatan Kristal Menggunakan SEM-EDX dan XRD Santy Dera
Gorontalo Journal of Infrastructure and Science Engineering Vol 1, No 2 (2018): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (631.023 KB) | DOI: 10.32662/gojise.v1i2.490

Abstract

Kerak barium sulfat merupakan kasus yang sangat umum terjadi di dalam industry minyak dan gas bumi. Adanya kerak ini mempengaruhi produksi minyak dan gas bumi, sehingga menimbulkan masalah teknis yaitu dapat menghambat laju alir, sehingga tekanan pada pipa akan semakin tinggi dan menyebabkan pipa akan pecah dan rusak. Hasil penelitian ini menyajikan tentang pengendapan kristal barit dibawah pengaruh nilai pH (6,8,10) larutan, konsentrasi Ba2+ (2500ppm, 3000ppm, 3500ppm) dan konsentrasi aditif asam lauric (5,10,20 ppm) dengan suhu konstan 300C dan laju alir 30ml/menit. Dalam kegiatan penelitian ini percobaan pengerakan BaSO4 di dalam pipa uji dilakukan dengan mereaksikan BaCL2.2H2O dan Na2SO4. Larutan dialirkan pada pipa beraliran laminar. Adapun pipa uji berisi lima kupon terbuat dari baja tahan karat (stainless steel). Hasil penelitian menunjukkan bahwa Penambahan zat aditif asam laurat dan meningkatnya nilai pH memperpanjang waktu induksi sehingga semakin lama terbentuknya inti kristal. Hal itu di akibatkan karena pH larutan mampu meningkatkan protonasi gugus asam karboksilat dari aditif sehingga mampu menghambat laju pertmbuhan kristal. Analisa SEM menunjukkan bahwa morfologi kristal BaSO4 berbentuk seperti bunga yang mengindikasikan bahwa bentuk kristal ini merupakan ciri khas kristal barit. Hasil analisis EDX menunjukkan bahwa elemen utama yang terbentuk pada sample adalah Ba, S, dan O. Sementara hasil analisis XRD memastikan bahwa kristal barium sulfat (barite), ini membuktikan kerak yang terbentuk adalah kristal barite sebagai kerak padat.
Pengaruh Posisi Bukaan terhadap Penghawaan Alami pada Rumah Balai Padang Rahma Yanti
Gorontalo Journal of Infrastructure and Science Engineering Vol 2, No 1 (2019): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (836.878 KB) | DOI: 10.32662/gojise.v2i1.525

Abstract

Penelitian ini bertujuan untuk mengetahui efek dari posisi dari bukaan yang ada di rumah Balai Padang. Metode yang digunakan adalah eksperimental dengan menggunakan bantuan software CFD (computational Fluid Dimension) berdasarkan persamaan Navier-Stoke, menggunakan K-Epsilon RNG. Eksperimen dilakukan dengan validasi hasil pengukuran lapangan This study aims to investigate the effect of position openings in Balai Padang house. The numerical methodology is based on solution of the Navier-Stokes equations, using K-epsilon RNG. Numerical results are validated with available field measurement data.
PENGHEMAT BAHAN BAKAR DENGAN MENGGUNAKAN PIPA KATALIS METODE HYDROCARBON CRACK SYSTEM GANDA PADA SEPEDA MOTOR 4 TAK 160 CC Sena Mahendra; Fahmy Fatra; Akhmad Riszal Riszal; Didik Rohmantoro
Gorontalo Journal of Infrastructure and Science Engineering Vol 2, No 2 (2019): Gorontalo Journal Of Infrastructure And Science Engineering
Publisher : Universitas Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.086 KB) | DOI: 10.32662/gojise.v2i2.692

Abstract

Motorized vehicles with economical fuel, agile, fast, and practical are some of the main factors consumers determine the choice of buying a motorcycle. People who own motorcycles under 2000 have not been equipped with fuel-saving devices, so they are wasteful of fuel and must be smart to save fuel. Many motorcycle manufacturers release the newest fuel-efficient products, but they affect the engine's performance. The price of premium fuel types is Rp. 6,500.00 per liter, petalite Rp. 7,600.00 per liter, firstly Rp. 8,900.00 per liter, and Pertamax turbo Rp. 10,100.00 per liter. High fuel prices encourage researchers to make various fuel-saving innovations. The purpose of this study is to develop an HCS catalyst pipe design double spiral model arranged in series to save fuel above 67% on a 4 stroke motorcycle without affecting the engine performance. The research method uses independent variables with engine speed, pipe length, pipe diameter, and Pertamax volume. Dependent variable by testing engine torque and power, fuel consumption time, temperature, and noise of the 156.7cc Mega Pro motorcycle. The addition of dual HCS catalyst spiral pipes and Pertamax volumes adds to engine performance time. At a length of 500 mm and 2000 ml, the Pertamax volume for the engine speed of 3500 rpm is only able to save fuel by 52.52%. The most optimal HCS double catalyst spiral pipe design is a 500 cm long pipe with a volume of Pertamax 2000 ml. In addition to engine performance time on the catalyst spiral pipe design can increase engine torque and power by 92.3% at 3500 rpm and reduce the temperature by 12.34% at 6000 rpm, and 1.93% noise at 4000 rpm. Increasing the double HSC catalyst spiral pipe and Pertamax volume can increase the hydrocarbon content of fuel entering the combustion chamber supplied from Pertamax vapor. Premium fuel (C8H18) plus Pertamax vapors. This makes the fuel content has a high octane value, greater engine power, and low fuel consumption. A high octane value affects perfect engine combustion, reduced knocking, low engine temperature, and decreased noise.Kendaraan bermotor dengan bahan bakar yang irit, lincah, cepat, dan praktis merupakan salah satu faktor utama konsumen menentukan pilihan membeli sepeda motor. Masyarakat yang memiliki sepeda motor di bawah tahun 2000 belum dilengkapi dengan alat penghemat bahan bakar, sehingga boros bahan bakar dan harus pintar menghemat bahan bakar. Banyak produsen sepeda motor yang mengeluarkan produk terbarunya paling irit bahan bakar, tetapi mempengaruhi performa mesinnya. Harga bahan bakar jenis premium Rp. 6.500,00 per liter, pertalite Rp. 7.600,00 per liter, pertamax Rp. 8.900,00 per liter, dan pertamax turbo Rp. 10.100,00 per liter. Harga bahan bakar yang tinggi mendorong peneliti melakukan berbagai inovasi penghemat bahan bakar.Tujuan penelitian ini mengembangkan desain pipa katalis HCS model spiral ganda yang disusun seri sehingga mampu menghemat bahan bakar diatas 67% pada sepeda motor 4 tak tanpa mempengaruhi performa mesin. Metode penelitian menggunakan variabel bebas dengan putaran mesin, panjang pipa, diameter pipa, dan volume pertamax. Variabel terikat dengan menguji torsi dan daya mesin, waktu konsumsi bahan bakar, temperatur, dan kebisingan sepeda motor Mega Pro 156,7cc. Penambahan pipa spiral katalis HCS ganda dan volume pertamax menambah waktu performa mesin. Pada panjang 500 mm dan 2000 ml volume pertamax untuk kecepatan putaran mesin 3500  rpm hanya mampu menghemat bahan bakar sebesar  52,52%. Desain pipa spiral katalis HCS ganda  yang paling optimal dari yaitu pipa dengan panjang 500 cm dan volume pertamax 2000 ml. Selain waktu performa mesin pada desain pipa spiral katalis ini dapat meningkatkan torsi dan daya mesin sebesar 92,3% pada putaran 3500 rpm serta mengurangi temperatur 12,34% pada putaran 6000 rpm, dan kebisingan 1,93% pada putaran 4000 rpm. Bertambahnya pipa spiral katalis HSC ganda dan volume pertamax dapat meningkatnya kandungan hidrokarbon bahan bakar yang masuk ke ruang pembakaran disuplay dari uap pertamax. Bahan bakar premium (C8H18) di tambah uap pertamax.menjadikan kandungan bahan bakar memiliki nilai oktan tinggi, daya mesin yang lebih besar dan komsumsi bahan bakar rendah. Nilai oktan tinggi mempengaruhi pembakaran mesin sempurna, knocking berkurang, temperatur mesin rendah, dan kebisingan menurun

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