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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 12 Documents
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Search results for , issue "Vol. 12 No. 1 (2013)" : 12 Documents clear
OPTIMALISASI KAPASITAS GERBANG TOL SEMANGGI I DAN SEMANGGI II TERHADAP PANJANG ANTRIAN KENDARAAN Achmad Nadjam; NURRIFAI NURRIFAI; ACHMAD ADYATMOKO
Jurnal Poli-Teknologi Vol. 12 No. 1 (2013)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v12i1.592

Abstract

Research on optimization of the capacity of toll gate semanggi 1 and 2 to long queues of vehicles is done by the queue theory approach and the capacity of the toll gate. Calculation of additional substation on the optimal number of toll gate semanggi 1 and 2 uses multiserver queuing theory. To address the causes of the most dominant variable in the long queue of vehicles is done by statistical tests. Increasing the number of substations which is done must be adjusted by the number of long queues of vehicles that are allowed by the minister for state owned company is 5 vehicles. The research methodology used is to conduct a survey of service time, the volume of vehicular traffic, the caused of the long queues of vehicles and open-close timing of toll gate semanggi 1. Based on the analysis obtained by calculating the optimal number of substations, based on normal conditions, changes in payment mechanisms and arrangements open and close toll gates semanggi 1 variable causes the most dominant long queue which is dated within one month of the service time of the transaction, a large nominal payment to the substation as well as the date of service time in 1 month and non-normal behavior of users jointly affect the service time of transactions. The result is the calculation of the optimal number of substations based on the change in payment mechanism at toll gate semanggi 1 with 3 main substations, while the toll gate semanggi 2 with 4 main substations. The optimum number of substations based on normal conditions at toll gate semanggi 1 are 4 main substations, while the toll gate semanggi 2 are 2 main substations and 2 tandem substations, while the number of substations based on the optimal open-close system at toll gate semanggi 1, at toll gate clover 1 is 4 main substations, while at toll gate semanggi 2 by 4 main substations. The timing for the opening and closing of toll gate semanggi 1 is 11 minutes for closing time, and 49 minutes for every hour of time in the open condition. Key words: optimization, toll gate capacity, queuing vehicles
PROTOTIPE DINDING BETIK HASIL DAUR ULANG SAMPAH PLASTIK SRI RESPATI NURCAHYANINGSIH; KUSUMO DRADJAD SUTJAHJO; DJEDJEN ACHMAD
Jurnal Poli-Teknologi Vol. 12 No. 1 (2013)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v12i1.596

Abstract

Researches about plastic concrete(betik)have been done since 2004 by kusumo drajad s. Betik consistsof a mixture of cement, sand, plastic aggregates (pellets) and water, can be categorized as lightweight concrete which have the same compressive strength with the normal concrete, approximately 120 kg/cm2. The research prototype betik walls which is done today as the result of the development composision ofbetik , consist of 1portion of cement, 2 portions of sand and 4 portions of plastic aggregate (recycling product ) and 0,6 portion of water. Afterward, all materials were mixed and poured into plastic bottles of mineral water packaging (such as aqua, ades ). Before the bottles are filled in,it should be cut into24 cm high, assembled with bendrat wires, and added concrete steel reinforcement diameter of 8 mm at the center of the bottle into a series of blocks that consisting of 6 bottles. Based on the testing in physical properties of a block betik’s wall samples have been tested: the slump’s average value is 6cm, the bottom’s surface is quite smooth, no cracked and all intact, but there are several cross-section of bottle that has been filled betik not circle.the experiment also showed: the size of betik’s block : 8.5 cm widht, 48 cm length, 24 cm high and average weight of each block betik’s walls is 9.5 kg. Furthermore, the blocks of betik’s wall were arranged and bonded using mortar that has composition 1 portion of cement and 4 portions of sand. The block of betik’s wall also supported horizontally by using bendrat wire and vertically by using 8 mm concrete bar, and shaped a segment of betik’s wall into 1.5 x 1.5 m. Subsequently, the wall of segment was standed up and than taken off, so the wall collapsed. The results shown that the knots of bindrat or concrete bar were in good condition and didn’t fall. The other results in this study were the blocks of betik’s wall blocks that collapsed are still in whole condition and it can be used again. Keywords: betik, plastic pellets, walls, concrete

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