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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
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Articles 3,145 Documents
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Pengaruh Nisbah Filler Abu Sawit (Ukuran Direduksi)/Carbon Black Dan Temperatur Pencampuran Terhadap Morfologi Dan Sifat Komposit Polipropilen/Karet Alam S, Septiana Veronika; Bahruddin, Bahruddin; Fadli, Ahmad
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Fly ash (reducted particle size)/carbon black (CB) have been used as the main fillers that increase the quality of rubbers. As each filler possesses its own advantages, the use of fly ash (reducted particle size)/CB blends should enhance the mechanical properties of natural rubber (NR) vulcanizates. This research investigated the effect of blend ratio filler fly ash (reducted particle size)/carbon black and mixing temperature on morphology and mechanical properties of polypropylene (PP)/NR composite. Variation of blend ratio fly ash (reducted particle size)/CB at 0/100, 30/70, 50/50, 70/30 and 100/0 were studied in order to determine the optimum fly ash (reducted particle size)/CB ratio that giving rise to the optimum properties. The rubber compound has been made by two roll mill at ambient temperature and 20 rpm rotor speed. Dynamic vulcanization was done on internal mixer at various mixing temperature 175 oC, 180 oC , and 185 oC. Rotor speed on internal mixer at 60 rpm. The mechanical properties was done by Universal Testing Machine (UTM) and the morphology was examined by Scanning Electron Microscopy (SEM). The optimum result was found at fly ash (reducted particle size /CB ratio filler 30/70 and the optimum temperature was 175oC. The best mechanical properties was given on tensile strength 2,4 MPa, elongation at break 14,9 % and modulus elastic 71,6 MPa.Keywords: carbon black, fly ash, maleated natural rubber, natural rubber, polypropylene
Analisa Drainase Untuk Penanggulangan Banjir Pada Ruas Jalan Garuda Sakti Di Kota Pekanbaru Menggunakan Software HEC-RAS Handayani, Yohanna Lilis
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Drainage system in Garuda Sakti street is not functioning optimally. It can be seen from the innability of drainage channels in the siphon discharge runoff. Floods cause traffic congestion and then disturbed teaching and learning activities in elementary school around the location of research. Analysis of floods was done with analyzing the drainage channels capacity and comparing it with the calculated discharge using Rasional method. The analysis of drainage capacity was conducted by using HEC-RAS version 4.1.0. Drainage geometrical analysis performed on the two types of simulations with three types time period, such as five years, ten years and twenty two years. The results on the existing condition is the maximum depth of floods is 14,30 centimeters for the five years time period, 16,40 centimeters for the ten years time period and 17,40 centimeters for the twenty years time period. Normalization with excavation depth of the channels can flood prevention and tackling effort is maximal.Key words: Flood, the rational formula, HEC-RAS
Pola Distribusi Hujan Jam-Jaman (Studi Kasus Stasiun Hujan Kecamatan Senapelan) Saragi, Setiadi; Handayani, Yohanna Lilis; Hendri, Andy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Rainfall distribution pattern in Senapelan (Pekanbaru) can not be known certainly Rainfall distribution can be preditced by hourly rainfall distribution. The pattern of hourly rainfall distribution can be calculated with empirical method or observation method. Empirical method process the daily rainfall with ABM (Alternating Block Methods), Tadashi Tanimoto rainfall distribution and Mononobe Modifed method. Observation method using rainfall hourly data. Based on the analysis,the highest incidence of rain in Senapelan the duration of 3 hours. Based on the comparison chart obtained form rain duration 3 hours and 7 hours approaching dsitribusi pattern ABM (Alternating Block Methods), rainfall duration of 4 hours and 5 hours approaching Mononobe Modified distribution patterns. The comparison is based on the duration of the show that the duration of the 3, 4, 5, 6, 7, and 8 approach the distribution pattern of the ABM method (Alternating Block Methods).Keyword: Rainfall distribution, Alternating Block Methods, Modified Mononobe Methods, Tadashi Tanimoto
Analisa Prediksi Data Debit Runtun Waktu Menggunakan Jaringan Syaraf Tiruan Algoritma Backpropagation (Studi Kasus DAS Indragiri) Gian Habriandi Tarigan; Manyuk Fauzi; Imam Suprayogi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Series data forecasting discharge Qn to Qn+1 using artificial neural network modeling approach backpropagation algorithm produces a good correlation between the value of the discharge predictions and actual discharge, it is also influenced by the pattern of the data available is quite good, it can be seen from the training process , testing and validation in MATLAB value that produces a fairly high correlation learning.In the process of building a model of artificial neural networks using matlab backpropagation algorithm, obtained parameter values that provide a good learning outcome correlation, while the parameters that epoch = 2000, lr = 0.1, mc = 0.9, the parameters have been experimentally repeated on each of the various parameters that affect. variation in the data 80 (training) and 20 (test) results are slightly better correlation than the data variation 70-30 and 75-25, this is evidenced in the testing process neural network model is applied to predict discharge in 2009.The results of this study in predicting discharge Qn+1 be developed by conducting in-depth research, so it may be a recommendation for a flood early warning system around the station AWLR locations berhala island.Key word : Artificial neural network, Algoritm Backpropagation, forecasting
Analisis Dimensi Dan Pola Aliran Drainase Jalan Hang Tuah Kota Duri Kecamatan Mandau Kabupaten Bengkalis Akirman, Akirman; Siswanto, Siswanto; Fauzi, Manyuk
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Flood became the dominant problems that occurred in the city of Bengkalis Mandau Duri subdistrict. Excess water in a channel resulted in a puddle in the road surface as well as residential areas. So the need for the reduction of excess water and drain to a drainage system that does not give rise to new problems that the region and its surroundings can function optimally. This study aims to analyze the dimensions anddrainage flow patterns that occurred in Jalan Hang Tuah City Mandau Bengkalis Duri subdistrict. Kandis station rainfall data for 11 years used to determine rainfall plan to use when re 10 years and obtained plans rainfall (R24) of 116.133 mm. Of the map area rainfall runoff and discharge plans in the region count to get the dimensions of the channel plan. The results of the study indicate that the channel dimensions are smallerthan the dimensions of the plan eksistingnya channels. There are other influences that cause the area was flooded.Keywords: Flooding, drainage systems, rainfall, channel dimensions
Pengaruh Kadar Minyak Kelapa Terhadap Morfologi Sifat Thermoset Rubber Dengan Filler Abu Sawit - Carbon Black Afrila Afrila; Bahruddin Bahruddin; Ahmad Fadli
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Plasticizer and filler have important role to making thermoset rubber. The function of plasticizer is to assist spreading process of filler in rubber and to improve elasticity of thermoset rubber. Meanwhile function of filler is to increase mechanical properties of thermoset rubber. The purpose of this study is to obtain the best conditions of the vulcanization process in the manufacture of thermoset rubber with coconut oil as plasticizer and fly ash/carbon black as filler hybrid, whichis the variation of cococnut oil content are 2,5 phr, 5 phr and 7,5 phr and filler hybrid FA/CB content are 30 and 50 phr with ratio 100/0 , 50/50 and 30/70. The results of thermoset rubber will be tested, it’s mecanical properties such as tensile strength, elongation at break, tension set, abrasion, hardness, and water absorption also thermoset rubber morphology. Based on average yield mecanical properties and morphology tested is obtained that the best conditions vulcanizationprocess is thermoset rubber with coconut oil content 5 phr and filler hybrid content of 30 phr with ratio FA/CB of 30/70. The best mechanical properties was given on tensile strength 24,8 MPa, elongation at break 816 %, tension set 2,17%, hardness 54±5 shore A, abrasion resistance 0,14 mm3/kg and also for water absorption 0,59%Keyword : Carbon Black, Fly Ash, Filler, Plasticizer, Thermoset Rubber, Vulcanization
Perbandingan Kapasitas Sambungan Balok Kolom Sistem Konvensional Dengan Sistem Pracetak Yang Menggunakan Dywidag Ductile Connector (DDC) Rachmat Hidayat; Zulfikar Djauhari; Iskandar Romey Sitompul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Beam - column Joint is a critical part on a reinforced concrete frame structure which is designed specifically for inelastic deformating when obtain a strong earthquake . Beam - column Joint will get horizontal and vertical shear forces as a moment result from the column above and below it and moments of the beams when carry the load of the earthquake. Beam-column joint is a very important part when transfer forces between precast elements which are connected. Beam - column joint area should be planned well in order to avoid changes the force flow precast structure which result the collapse of the hierarchy which are achieved in the structure . when the system of structure is changed from conventional to precast, it should be needed a good analyze to get an accuracy capacity in the critical region structural elements . In this study is obtained a moment and shear capacity of the structure which is put on any type of soil between conventional beam-column connection and a precast use Dywidag Ductile Connector. The result show that there are a differences between two types of connections in moment and shear capacity what are placed in difference soil conditions . The greatest of moments capacity is in the conventional beam column connection, that is SE = 271.25kNm, SD = 222.40 kNm , SC = 199.35 kNm, SB = 162.20 kNm, SA = 162.20 KNm. While The greatest of shear capacity is in the precast beam column connection, that is SE = 1318.21 kN , SD = 1019.80 kN , SC = 1019.80 kN, SB = 878.80 kN, SA = 679.87 kN. it is caused of type of method in calculating for the capacity of conventional systems and precast connector with ductile connector type.Keyword : Precast, Conventional, Ductile Connector, Beam – Column Connection
Analisis Tingkat Sedimentasi Dan Gerusan Waduk PLTA Koto Panjang Bagian Hulu Menggunakan Data Penginderaan Jauh Jailani, Jailani; Sutikno, Sigit; Rinaldi, Rinaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Sedimentation and erosion in reservoir are common natural phenomena. Reservoir sedimentation and erosion caused by several factors such as: water level fluctuations in the reservoir and run off when it rains. Observation of reservoir sedimentation and erosion are done using remote sensing data. The data used are Landsat satellite imagery Landsat 7 ETM+ and Landsat 8 OLI_TIRS. Overview of sedimentation and erosion in this study conducted in 3 water level conditions. Based on the analysis results obtained: (1) condition 1 (mean water level 76,67 m), of date 1 September 2000 to 11 July 2013 (12,87 years) has occurred sedimentation and erosion, for 140,62 ha and 97,47 ha respectively, the rate of sedimentation and erosion, for 10,95 ha/year and 7,58 ha/year respectively. (2) the condition 2 (mean water level 77,73 m), of dates 9 December 2001 to 16 November 2013 (11,95 years) has occurred sedimentation and erosion, for 146,23 ha and 125,06 ha respectively, the rate of sedimentation and erosion, for 12,24 ha/year and 10,47 ha/year respectively. (3) Condition 3 (mean water level 79,75 m), of date 9 March 2000 to 18 December 2013 (13,79 years) has occurred sedimentation and erosion, for 325,69 ha and 73,23 ha respectively, the rate of sedimentation and erosion, for 23,62 ha/year and 5,31 ha/year respectively.Keywords : sedimentation , erosion , reservoir, remote sensing , Landsat
Simulasi Kelayakan Ekonomi Pembangunan SPAM Regional II Berdasarkan Kerja Sama Pemerintah Dan Swasta (KPS) Dengan Melakukan Sharing Budget Aditya Sukrama; Ari Sandhyavitri; Siswanto Siswanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

The development of Water Supply System (SPAM) Regional II Riau Province requests high capital investment to build intake, transmition pipe lines, distribution pipe lines, water treatment plant and other related with infrastructure. Budget planbased on feasibility study which has been done is almost Rp 1,1 trillion that classified as very much, which resulted the payback periode is relatively long, whereas Bankonly allows refund with interest installment loan does not exceed a period of 10 years. However, it needs to simulate the economic feasibility of SPAM development based on public-private partnerships (PPP) by sharing budget. In other to financing the development of SPAM Regional II, the government of Riau Province collaborates this project’s financial with the scheme of Public Private Partnership (PPP). Therefore, several simulations of sharing budget need to beplanned for the continuity of infrastructure development. There are three alternatives in determining sharing budget, alternative I where government share (APBN andAPBD) is 30% of total budget plan while third party (private) share is 70%. Alternative II, from the government (APBN and APBD) is 40% and from the third party (Private) 60%, Alternative III of government (APBN and APBD) is 50%, whilefrom the third party (Private) 50%. Each of these three alternatives will also be three kinds of simulations loan funds performed on fonds that covered by the thirdparty,that is equity amounts of 30%, 50%, and 70% and the rest is Bank loans. By calculating the engineering economic analysis based on the sharing budget, it can be concluded that the third alternative with 30% bank loans (70% equity) is a simulation that results the best financial indicators such as NPV, BCR, PBP, and IRRKeywords : Budget Sharing, Public Private Partnership, financial indicators
Analisa Balok Tinggi Beton Bertulang Dengan Menggunakan Metode Strut and Tie Model (Studi Kasus Balok Tinggi Dengan Beban Merata) Munir, Misbakhul; Djauhari, Zulfikar; Sitompul, Iskandar Romey
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Strut-and-tie models (model fighters and binder) is derived from the truss analogy models. Concrete structures planning usually carried out under the assumption of Bernouli and Navier sectional analysis due to the bending moment. Expressed deep beam when the beam span to height ratio of less than five .One alternative approach to address the structural elements such as deep beam approach is to use a strut-and-tie models, namely by dividing the structure in region B (Bernouli) and D (Distrub) and describe the flow of force (load Plath) as the force transfer occurs reinforced concrete structures due to cracks conditions caused by forced, the parameters of the strut-and-Tie Model (STM) is press rod (strut), pull rods (tie) and points stains (stains zone) as a meeting area. The purpose of this thesis is to analyze the correlation among reinforcing volume to the quality of concrete, steel quality, and variation about long-span the deep beam with the conventional method and the method of Strut-and-tie-models (STM) based on ACI is verified by the Program Computer-Aided-Strut -and-Tie (CAST) The results of the analysis of the deep beam with a distributed load at the end of the assignment of conventional method is more efficient than the STM method for long span for spans of 2.5 and 3.0 m to 4.5 STM method is more efficient than conventional methods. This thesis also explain about high concrete reinforcing design manually base on conventional and strut and tie model (STM) in spite of use program computer-aided-strtu-and tie (CAST) In this study also obtain the correlation among the span length (L), the quality of concrete (f'c), the quality of the steel (fy) and the load evenly to the reinforcement ratio, the addition of span length to enlarge the reinforcement ratio, the addition can reduce the quality of the steel reinforcement ratio, and additional load can increase the reinforcement ratioKeyword: Deep beam, distributed load, reinforce volume, strut-and-tie model, concrete.

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