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Jurnal Teknologi dan Vokasi
Published by Institut Teknologi Padang
ISSN : 29858690     EISSN : 29643694     DOI : https://doi.org/10.21063/jtv
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering
Jurnal Teknologi dan Vokasi (JTV) mengakomodasi pemaparan informasi ilmiah dalam bentuk artikel penelitian, artikel teknis, artikel konseptual, ataupun artikel laporan studi kasus yang sesuai dengan fokus dan ruang lingkup jurnal ini. Ruang lingkup JTV mencakup semua masalah di bidang Teknologi Rekayasa Listrik, Rekayasa Kontruksi Bangunan, dan Teknik Mesin, tapi tidak terbatas pada topik: Sistem tenaga listrik, Mesin-mesin listrik dan sistem konversi energi, Mikrokontroler dan arduino, Teknologi informasi dan sistem kontrol, telekomunikasi, Teknik elektromedik Transportasi Jalan dan Jembatan Manufaktur Material Energi Baru dan Terbarukan Go Green
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 141 Documents
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PENGARUH PENAMBAHAN ABU ARANG TEMPURUNG KELAPA TERHADAP KUAT TEKAN PAVING BLOCK A, Arman; Mulyati, Mulyati; Wardi, Syafri; Roza, Angelalia; Sonia Putra, Didi
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.23-30

Abstract

Paving Block is a building material made from a mixture of cement, sand and water. Paving blocks are widely used in the construction sector, such as sidewalks, highways, parking lots, parks and others. Ease of installation, inexpensive maintenance and fulfilling aspects of beauty make paving blocks more preferred. Along with the many developments such as houses, parks, roads in the midst of today's society, this has resulted in the need for paving blocks increasing. Because the hardening process takes quite a long time, therefore, to speed up hardening, this study added coconut shell ash. In this study using a ratio of 1 Pc: 3 Ps and the addition of coconut shell ash with variations of 0%, 2.5%, 5% and 7.5% by weight of cement. The average compressive strength value of paving block plans is a minimum of 12.5 MPa and a maximum of 15 MPa for grade C which is used for pedestrians and other uses, with rectangular specimens measuring 20 cm x 10 cm x 6 cm of 24 pieces with age 28 days testing for compressive strength and water absorption test. Based on the test results, the normal compressive strength of paving blocks was 13 MPa, the addition of 2.5% coconut shell ash was 13.5 MPa, 5% shell ash was 14.5 MPa, the addition of 7.5% coconut shell ash was 12. .83 MPa. Based on the test results, the normal Paving Block water absorption value was 7.8%, 2.5% shell ash was 7.22%, the addition of 5% shell ash was 6.3%, 7.5% shell ash was 4.89%. Thus, it can be stated that the effect of Coconut Shell Ash can increase compressive strength and reduce water absorption. The highest compressive strength and lowest water absorption were obtained at the addition of 5% for the compressive strength and the lowest water absorption was obtained at the addition of 4.89%.
SISTEM MONITORING SUHU DAN INTENSITAS CAHAYA PADA SOLAR PANEL 3 WP BERBASIS IoT (INTERNET OF THINGS) Alfith, Alfith; Premadi, Aswir; Bachtiar, Antonov; Al Habib, Sayyid
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.31-38

Abstract

According to the solar insolation map, Indonesia has a daily intensity of solar radiation of 4.8 kW/m per day. The potential of solar radiation is highly exploitable and is the most promising source of energy in the future, the energy generated by the sun is unlimited compared to the increasingly depleting fossil energy sources. Many energy experts are already competing to find new discoveries about environmentally friendly alternative energy sources, one of which is solar cells, although efficiency today still requires further consideration. In this study, the authors used the Wemos module with the ESP 8266 type that can be integrated with the Wi-Fi system as its controller, as well as using a temperature sensor with the DHT11 type to detect the temperature in the room and use the LDR sensor as a light intensity detector or as a lux which can be monitored remotely using an internet connection. Light intensity and temperature monitoring results are obtained with light intensity values and temperature values using the application of the highest value = 1005 lux, the lowest value is = 435 lux. For the highest value of the temperature of = 320 Celsius, for the lowest of = 240 Celsius, in sunlight conditions at peak, the resulting value is the light intensity of 1005 lux and the temperature value of 32 ° Celsius which indicates that the weather conditions are very hot.
PENGARUH PENAMBAHAN EPOKSI PRIMER TERHADAP LAJU KOROSI BAJA KARBON RENDAH YANG DIRENDAM DALAM LARUTAN KAPORIT (KALSIUM HIPOKLORIT) YANG BERSIRKULASI Eka Putra, Ismet; Wardianto, Dedi; Aulia, Joni
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.39-45

Abstract

Chlorine solution,  is usually used as a water disinfectant, which can cause metal corrosion. Circulating solution can erode the protective layer thereby accelerating corrosion. Epoxy primer provides the best rust prevention and adhesion properties compared to other types of primer. This research was conducted using 27 specimens in 3 vessels in each vessel there were 9 specimens with soaking low carbon steel without treatment, which was coated with paint and coated epoxy primary. The volume of 1 liter of chlorine solution for 1 vessel. The results of this study indicate that the primary epoxy coated can hamper corrosion well. Low carbon steel weight reduction that without treatment or which is not coated much larger than in low carbon steel coated with paint and coated epoxy primary even though the paint coated is still unable to withstand the corrosion rate well. The lowest corrosion rate with the provision of primary epoxy in a 60-day immersion time with an average value of 0,002879872mpy and the highest corrosion rate with without treatment or which is not coated with a 15-day pronounce time with the average value 0,009015251 mpy.
PENGARUH PENAMBAHAN LIMBAH BATU BATA MERAH BUKITTINGGI SEBAGAI FILLER PADA CAMPURAN AC-WC DENGAN PENGUJIAN MARSHALL Misbah, Misbah; Pratiwi JF, Anggun; Arman, Arman; Mulyati, Mulyati; Rofifah, Jihan
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.46-52

Abstract

The existence of highways is needed in the development of an area. The problems that are often encountered in the construction of highways are excessive vehicle loads than permitted, less than optimal road maintenance and the influence of asphalt mixture factors, so that roads are often found to be damaged before the design life is reached. To improve the quality of road pavement construction, it is necessary to conduct research on mixed innovations used or adding other additives to the pavement construction mixture, so that better mixed quality is produced. One of the types of research that can be done is to use the method of making test objects by conducting experiments in the laboratory by analyzing the effect of adding Bukittinggi red brick waste as a filler to the AC-WC mixture with the Marshall test. From the results of the research with the Marshall test that has been carried out, with the title "The Effect of Adding Bukittinggi  Red Brick Waste as Filler to the AC-WC mixture with the Marshall test, the results obtained on the addition of 1% variation of red brick waste filler resulted in a property value, namely the value: stability , MQ, VMA, VFA meet the requirements of the 2018 revision 2 Highways specifications, whereas the addition of a 2% variation of red brick waste filler results in the property values, namely the Flow and VIM values, not meeting the requirements of the 2018 revision 2 Highways specifications, this indicates increased deformation in pavement layer under load. So, the 2% addition variation is not recommended, the use of red brick waste as filler added to the AC-WC mixture can only be used up to 1%.
KAJIAN PASIR SILIKA SEBAGAI AGREGAT HALUS PADA CAMPURAN ASPHALT CONCRETE WEARING COURSE (AC – WC) BERDASARKAN UJI MARSHALL Nofrianto, Hendri; Dwi Astika, Septiana
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.53-66

Abstract

Aggregate is the main component in the formation of asphalt mixtures, in which the weight of aggregate ranges from 90%-95% of the total weight of the asphalt mixture. Usually, the aggregate used is obtained directly from nature and is a non-renewable material so that its availability continues to decrease. One of the alternative aggregates utilized is silica sand which is a waste originating from Karang Putih Hill, Padang City, West Sumatra, it is hoped that this silica sand waste can be used as an alternative aggregate in asphalt mixtures on flexible pavements. This research aims to analyze the characteristics of asphalt mixtures using silica sand as fine aggregate and further review the effect of water on the durability of the mixture through immersion tests with variations of immersion of 0 hours, 24 hours, 48 hours, 72 hours and 96 hours based on marshall testing. The results of this study indicate that silica sand can be used as an alternative aggregate in road pavements, this can be concluded based on the values of the marshall parameters of silica sand within the specifications used, the use of silica sand in the Asphalt Concrete - Wearing Course (AC-WC) mixture has an optimum asphalt content value of 5.7%. Durability of asphalt mixtures with silica sand seen from the results of the immersion test decreases as the immersion duration increases, the Residual Strength Index (IKS) value meets the requirements of Bina Marga 2018 Revision 2 specifications up to a 24-hour immersion duration with a value of 93.94%.
ANALISIS STRUKTUR GEDUNG DPRD KOTA BUKITTINGGI MENGGUNAKAN SNI BETON BERTULANG 2847:2019 DAN SNI GEMPA 1726:2019 Medriosa, Hamdeni; Wirahadi Kusuma Wau, Antonius
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.67-74

Abstract

Structural design is an important element in the construction of a building in order to produce a building that is strong, safe and economical. The overall structure of the building consists of two parts, namely the upper structure in the form of floors, beams, columns, walls and roof while the lower structure is in the form of a foundation. The DPRD building for the city of Bukit Tinggi will be analyzed using the Special Moment Resisting Frame Structure (SRPMK) system based on the procedure for calculating reinforced concrete structures using (SNI 2847-2019). Earthquake load analysis uses the spectrum response method based on earthquake resistance planning procedures for building and non-building structures using (SNI 1726-2019). Analysis of minimum design loads and related criteria for buildings and other structures using (SNI 1726-2020). Modeling in this study uses software based on 3D finite elements using SAP2000. The results of this study explain that the modeling meets the requirements for SNI-1726-2019 earthquake design and SNI 03-2847-2019 reinforced concrete design.
PENINGKATAN PERFORMANSI MANUVER GERAKAN ROLL HEXACOPTER DENGAN METODA KENDALI PID ADAPTIF Al, Al; Premadi, Aswir; Effendi, Asnal; Alfith, Alfith; Dasman, Dasman; Syofian, Andi
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.75-82

Abstract

In the Hexacopter flight control system, there are three very influential movements, namely Pitch, Roll and Yaw movements. Roll movement is very important to note because it affects the direction of the plane's flight. This movement is strongly influenced by the system's dynamic response to changes in hardware characteristics and the influence of changes in wind direction and speed from external systems. For this reason, this research is offered to implement a control system that can adapt to these dynamic disturbances. This study proposes the application of a proportional integral derivative (PID) control system, where constant values can adjust to dynamic changes in the system. These constant values can adjust to changes in errors and delta errors at any time. then a fuzzy logic controller (FLC) algorithm is applied, to make the constant values adaptable. The design of Fuzzification and Defuzzification is based on the maximum error and delta error limits. After real-plant testing, system performance is obtained as follows: settling time = 24mS; peak time 21mS; rise time = 9mS; delay time = 4.4mS; percent overshoot and steady state error = 1%.
OPTIMASI KUAT TEKAN DAN PENYERAPAN AIR PAVING BLOCK MENGGUNAKAN AKS ADDITIVE Mulyati, Mulyati; Nurul Fausi, Muhammad
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.83-88

Abstract

This study used AKS additive as an added ingredient for the mixture for making paving blocks. The purpose of this study was to determine the optimum value of the compressive strength and water absorption of paving blocks from the addition of AKS additive into the mixed ingredients for making paving blocks. The ratio of a mixture of cement and sand in the manufacture of paving blocks is used 1: 3, and the addition of AKS additives is 0%, 1.6%, 1.7%, 1.8%, 1.9% and 2.0% by weight of cement. The paving block test object used a mold with a size of 20 cm x 10 cm x 6 cm. Testing of the compressive strength and water absorption of paving blocks was carried out at 28 days of age. The results of the study using AKS additive as an added ingredient in the mixture for making paving blocks can increase compressive strength and reduce water absorption. The highest average compressive strength of 12.67 MPa and the lowest average water absorption of 7.06% was obtained by using 1.9% AKS additive, meeting the requirements for quality C paving blocks used for sidewalks or pedestrians.
SISTEM CERDAS PENDIAGNOSIS KECANDUAN INTERNET YANG MENGGUNAKAN SISTEM PAKAR RUNUT MUNDUR Iksan, Nur; Yani, Achmad; Manaf, Abdi; Ismail; Panessai, Ismail Yusuf
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.89-102

Abstract

Starting with COVID19, almost everyone around the world uses the internet, even to the worrying stage, namely internet addiction. Several studies report that the level of addiction to using the internet network is getting higher even though COVID19 has subsided. Teenagers have not been able to choose useful internet connection activities and they are more prone to experiencing bad influences from the social environment. To overcome this they need support from psychologists so they can prevent and diagnose early before they become sufferers of severe internet addiction. But on the other hand, the number of psychologists who can help is still very limited, especially in small towns. In addition, economic factors and limited time for parents to accompany their children to visit psychologists are the main obstacles. Therefore it is necessary to find a solution that can overcome the limitations and barriers to adolescents in obtaining services from a psychologist. One solution to this problem is to build an expert system that can work as a psychologist. The purpose of this research is to build an expert system application for diagnosing internet addiction using the backward chaining method. Internet addiction level is categorized in low, medium and high. System testing is carried out using black box testing which allows experts to obtain a set of output conditions that will carry out all functional requirements of the program. This test shows that the inout and output data has been running as expected.
PENGARUH JENIS MATERIAL BLADE TURBIN ANGIN TERHADAP PUTARAN DAN DAYA LISTRIK YANG DIHASILKAN Sulaiman, Sulaiman; Alfurqan, Rahmat; Akmal, Akmal; Perdana, Mastariyanto
Jurnal Teknologi dan Vokasi Vol 1 No 2 (2023): Jurnal Teknologi dan Vokasi
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtv.2023.1.2.103-110

Abstract

Starting with COVID19, almost everyone around the world uses the internet, even to the worrying stage, namely internet addiction. Several studies report that the level of addiction to using the internet network is getting higher even though COVID19 has subsided. Teenagers have not been able to choose useful internet connection activities and they are more prone to experiencing bad influences from the social environment. To overcome this they need support from psychologists so they can prevent and diagnose early before they become sufferers of severe internet addiction. But on the other hand, the number of psychologists who can help is still very limited, especially in small towns. In addition, economic factors and limited time for parents to accompany their children to visit psychologists are the main obstacles. Therefore it is necessary to find a solution that can overcome the limitations and barriers to adolescents in obtaining services from a psychologist. One solution to this problem is to build an expert system that can work as a psychologist. The purpose of this research is to build an expert system application for diagnosing internet addiction using the backward chaining method. Internet addiction level is categorized in low, medium and high. System testing is carried out using black box testing which allows experts to obtain a set of output conditions that will carry out all functional requirements of the program. This test shows that the inout and output data has been running as expected.

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