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JURNAL POLI-TEKNOLOGI
Published by Politeknik Negeri Jakarta
ISSN : 14122782     EISSN : 24079103     DOI : https://doi.org/10.32722/pt.v20i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
Poli-Teknologi Journal is a journal, which began publication in 2002, published by the Research and community service Unit of Politeknik Negeri Jakarta. It starts from Volume 1 Number 1 in January 2022 for printed version; ISSN (print) 1412-2782 and ISSN (online) 2407-9103. Poli-Teknologi Journal is a series of scientific publications in applied science and technology area from the perspective of a multi and interdisciplinary studies and it is published 3 times in year.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 23 No. 2 (2024)" : 5 Documents clear
KARAKTERISTIK PRODUK CAIR CO-PYROLYSIS SAMPAH PLASTIK DAN PELUMAS BEKAS Ilyas, Dede Muhamad Ilyas; Mustofa Kamal, Dianta; Amatullah Fatin, Shafa; Susanto, Iwan; Prasetya, Sonki
Jurnal Poli-Teknologi Vol. 23 No. 2 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i2.4997

Abstract

The increasing usage of plastic is proportional to the amount of plastic waste today. The plastic usage makes the human live easier especially for packaging purposes. However, it also has a negative impact to the environment. This is due to it cannot easily decompose. Therefore, it can reduce the level of soil fertility. Besides plastic, lubricant waste from motor vehicles can induce an environmental problem as well since it is categorized of hazardous material (B3) waste. Currently, the use of plastic waste has been widely carried out by correlating into liquid fuel through thermal cracking or pyrolysis treatment. It produces liquid and it can be used as an alternative liquid fuel. This study uses the co-pyrolysis method for treating the used plastic waste with used lubricants. The composition ratios used are 10:0, 10:2, 10:4, 10:6, and 10:8. The highest acquisition of liquid products was in the composition ratio of 10:6 as much as 24.67% with a calorific value of 11015.33 cal/g. Then the highest calorific, density, and viscosity values were obtained, namely at the 10:8 composition ratio of 11061.67 cal/g, 0.8906 g/mL, and 0.927 cSt. It was concluded that the mixing of used lubricants in the co-pyrolysis of LDPE plastic waste was able to increase the calorific value of the liquid product produced.
Perancangan Pile Cap Menggunakan Metode Strut and Tie Model Wijaya, Annisa; Sukarman
Jurnal Poli-Teknologi Vol. 23 No. 2 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i2.6076

Abstract

The design of the pile cap structure generally involves a conventional method that assumes that all areas are linear. The reality distribution strain in cross-section structure pile cap experiences non-linear strain. So it is necessary method close the analysis behavior pile cap actually, that is with the method Strut and Tie Model referring to SNI 2847:2019. Therefore, done study with the formulation problem How designing a reinforcement pile cap with three poles with the method Strut and Tie Model as a comparison configuration reinforcement and requirements material with method conventional. Research methods are done with stages studies literature, data collection, modeling form strut and tie, analysis calculation, up to detailed drawing of the reinforcement pile cap. Comparison configuration reinforcement flexible on method Strut and Tie Model follow the modeling lines element tie, whereas method was conventionally installed with spread reinforcement evenly throughout area pile cap. The strut and Tie Model Method consists of elements 1 (3D16), elements 2 and 3 (4D16) with a total length of reinforcement bending of 18884 mm. The method conventional consists of X direction (6D16) and Y direction (6D16) with a total length of reinforcement bending of 16530 mm. This matter proves that the strut and tie model produces more lots that need reinforcement amounting to 14.24%.   Keywords: Pile Cap, Three Piles, Strut and Tie Model, SNI 287-2019, Flexural Reinforcement
Biaya dan Tebal Perkerasan Kaku Menggunakan Metode MDP 2017 dan AASHTO 1993 Rizal, Rikki Sofyan; Prihutomo, Nuzul Barkah; Raihan Wahyu Putra
Jurnal Poli-Teknologi Vol. 23 No. 2 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i2.6683

Abstract

The planning and evaluation process of toll road pavement thickness play a crucial role in sustainable toll road design. Road structure design needs to align with construction requirements, and pavement serves to shield the road layers from excessive pressure due to vehicle loads. Recalculating the rigid pavement thickness on the Cinere - Jagorawi toll road section III using the AASHTO and MDP methods aims to determine the most suitable method for determining toll road pavement thickness. Additionally, the study conducts cost calculations for rigid pavement work using slipform concrete paver and conventional methods. The research findings indicate that based on project data analysis, the pavement thickness using the AASHTO method is 16 cm, while the MDP method results in a thickness of 28 cm. The MDP analysis yields a pavement thickness identical to the field measurement of 28 cm, whereas the AASHTO method produces a pavement thickness 12 cm thinner than the field measurement. The effective cost of rigid pavement work using manual methods and concrete pavers amounts to Rp11,640,674,008.34. This cost applies to a thickness of 29 cm, a lane width of 3.7 m, and a work length of 5,700 m. The maximum work length is 3,291 m using manual methods, and the minimum work length is 2,409 m using concrete pavers.
Analysis of Fault Locations Using the Impedance Method on the GIS 150 kV Transmission Line Karang Pilang Surabaya Reza Sarwo Widagdo; Budiono, Gatut; Aris Heri Andriawan; Puji Slamet; Putra, Roy Wibatsu
Jurnal Poli-Teknologi Vol. 23 No. 2 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i2.6837

Abstract

Transmission lines often experience difficulties in determining the location of interference, due to the length of the transmission line. This interference can be secured by using relays, one of which is a distance relay, this tool secures the zone 1, zone 2 and zone 3 areas on the transmission line. Apart from relays, there is also a tool to determine the fault distance, namely a fault locator. These two tools are examples of protection on transmission lines. The method used in this research uses the impedance method to determine the distance the fault occurs and the settings on the distance relay. This technique is often used in electric power systems and is very effective for transmission lines, such as those in Karang Pilang, because of its ability to detect disturbances in transmission lines and equipment. Based on the analysis results, calculating the fault distance using the impedance method shows that the calculated value is very close to the distance measured by the fault finder. Specifically when a short circuit occurs, the impedance method calculates a distance of 14.35 km, while the fault locator measures it at 14.59 km with a margin of error of 1.5%.
Developments in Abrasive Water Jet Machining of Nonmetals Gupta, Kapil
Jurnal Poli-Teknologi Vol. 23 No. 2 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i2.6910

Abstract

Abrasive water jet machining (AWJM) is known for precise cutting of metals and nonmetals. In the past few years, this machining technology has undergone some important developments which possibly enhanced its capability and extended its applications. This article presents such important developments and related attempts on AWJM made by researchers in the recent past. The scope covers AWJM of important nonmetallic materials like rock, glass, rubber, composites and ceramics etc. The important developments have been in the form of utilizing abrasives like sugar particles, glass beads, ice particles, bone powder; water-less abrasive jet machining; process optimization; and acoustic emission monitoring etc. that enhanced the capability of the AWJM process towards cost reduction, quality enhancement, and sustainability. The article intends to amass such important information related to the recent developments in AWJM for nonmetal cutting and aims to facilitate scholars and researchers with this new knowledge.

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