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INDONESIA
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
ANALISIS SAMBUNGAN BALOK PRECAST SEDERHANA DENGAN SISTIM DOUBLE LAPSPLICES MIDDLE WET JOINT DI MOMEN MAKSIMUM Andrias Rudi Hermawan; EKA SM
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.v12i1.490

Abstract

ABSTRACT This research about connection of precast simple beam with double lapsplices middle wet joint system have finished with comparing of flexure strength between precast beam with connection at meddle span (middle wet joint) and conventional beam. Performance of flexure strength of precast beam with connection at meddle span (middle wet joint) is better than conventioanal beam, can be proved to curve of deflection – load between conventional beam (1 and 2) with precast beam with connection at meddle span (middle wet joint 1 and 2). Base on that curve, can be known that precast beam with connection at meddle span (middle wet joint 1) have deflection10 mm at 151,8 kn and precast beam with connection at meddle span (middle wet joint 2) have deflection16 mm at 169,2 kn and conventional beam 1 have deflection 47 mm at 145,5 kn and conventional beam 2 have deflection 40 mm at 144,7 kn Keynote : prestressed,precast,boned nonprestressed,concrete
WAKTU DENGUNG EFEKTIF UNTUK DESAIN MULTIFUNGSI AUDITORIUM PENDIDIKAN DYAH NURWIDYANINGRUM; SRI KURNIASIH
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.v12i1.491

Abstract

ABSTRACT Auditorium is meeting closed space that designed for acoustical quality purposes. In education field, auditorium is needed as primary supporting education facilitation. University generally use auditorium for multifunction activities such as public lecture, art performance, research seminar and exibition. Reverberation timeis one of methodto measure acoustic quality in closed spaceespecially auditorium. For multifucntion auditorium, reverbaration time target range around 0,5 – 1 second. Existing reverberation time calculation become a reference in prequisites achievement that is targeted. Space planes surface redesign included floor, wall, plafond and interior influences prequisites achievement. Another, space planes surface redesign should improve aesthetic value and space fucntion supporting value.comparasion between existing and redesigned calculation shows that prequisites is achieved with change interior arrangement (chairs and tables), correct stage backgroud material, streamline coridor plafond shape, replace diffuser on main plafond, and repair unefective reflective wall Keywords : reverberation time, diffuser, acoustic
BETON INSTANT TANPA SEMEN DAN TANPA PEMADATAN MANUAL PRATIKTO PRATIKTO; ANNI SUSILOWATI
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.v12i1.492

Abstract

ABSTRACT The so called self compacting geopolymer concrete can be a response to the weakness of conventional concrete cause the need of cement and compaction process. Global warming caused by greenhouse gas emissions , such as co2 as a result of the use of portland cement can be reduced. Instant concrete will consist of aggregates and a mixture chemical composition of geopolimer in the absence of water. The activator of geopolymer concrete used alkaline solution consisting of sodium hydroxide ( naoh ) and sodium silicate , with fly ash binder . Variation of water binder ratio ( wbr ) from 0.30 , 0.25 and 0.20 combined with superplasticizer of 1% and 2 % . Aggregate to be used is split with a diameter of 10mm and fine aggregate sand. Results are mixed composition : naoh = 1 ; na2sio3 = 2 ; water = 1.8 ; fly - ash = 7.1 ; aggregate fine = 7.3 and split aggregate = 11 , with 20 % of superplasticizer . Used as a test specimen cylinders and beams for strength testing . Testing was conducted on the workability , flowability , and segregation . Blocking value ratio , and compressive strength testing will be a concrete value for this measure . Flowability testing , used lshaped box , j - ring test and v - funnel test while testing the workability with slump flow test used slump cone . Results obtained in the form of aggregate composition and compound of geoplolimer wrapped in bags to be used as an instant concrete Keywords: alkali solution, flowability, l-shaped box, self compactinggeopolymer concrete, slump flow
STABILITAS DINAMIS BETON ASPAL CAMPURAN PANAS DIBAWAH VARIASI TEMPERATUR Eva Azhra Latifa; Nuzul Barkah Prihutomo; Mulyono Mulyono
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.v12i1.493

Abstract

ABSTRACT This research is part of a long-term study in an effort to discover a kind of asphalt concrete mix that is both economical and highly durable at up to 600 celsius under flood water submersion. The research is conducted by testing the dynamic stability of hot mix asphalt concrete as to simulate vehicle wheel load on a flexible road pavement. The tested mix utilizes portland cement and stone dust as the filler aggregate, as well as soft-gradation stone ash bina marga 2010 with pertamina asphalt, asphalt concrete mix with retona asphalt, and asphalt concrete mix with superpave-gradation aggregate. All those mixes undergo the marshall stability test as well as residual stability and refusal density tests beforehand to achieve the most optimum composition. The marshall stability test is conducted with different submersion times, ranging from 24, 72 to 120 hours, at temperatures ranging from 300, 380 to 600 celsius. The dynamic stability of the mixes is tested by a wheel-tracking device at 300 and 600 celsius. The data is analyzed through the regression analysis method. After treatment, results showed that the mix of bina marga fine gradation with stone dust filler and retona asphalt 55has highest dynamic stability with lowest rate of deformation. Keyword : filler aggregate, superpave gradation, bina marga fine gradation, marshall characteristic, dynamic stability
PEMANFAATAN ABU SEKAM PADI SEBAGAI SUBSTITUSI SEBAGIAN SEMEN PADA MORTAR SEMEN PASIR MUHTAROM RIYADI
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.v12i1.494

Abstract

ABSTRACT Tilization of waste from the combustion of rice husk ash bricks optimally, can solve the problem of environmental pollution. It also can save the construction costs due to reducing in the use of cement. The addition of fine grains that pass the sieve on the size of 0.075 mm can improve the workability of mortar, minimum the voids and finally waterproof ability improve strength. This studi is to determine the performance of rice husk ash on the physical and mechanical properties of mortar. Workability includes the water absorption,ability compressive strength, tensile strength, adhesion of the mortar and optimal percentage value addition of rice husk ash. The research method used in this research was a run by analising a series of samples experiments. The test piece was made with five kinds of mixtures, they were : 1 cement : 5 sand as a comparison and: 1 cement : 5 sand with rice husk ash substitution of cement by 10%, 15%, 20% and 25%, the water factor (cement + rha) between 0.92 to 1.05 and the value spread between 80% - 90% for each test specimen made 25 pieces. Every type of mixture was tested was : the spread, water absorption, compressive strength, tensile strength and bonding strength. The results showed that the addition proportionaly substitution rha composed with addition of water, and inversely composed to the density, the compressive strength, tensile strength, due to a chemical reaction of sio 2 and cao, rice ash husk only serves as a filler since the reaction was take place after 4 days old of sample. Compressive strength of mortar ranged from 10.25 mpa -13.00 mpa, including the type s mortar, for the substitution asp 0%, 10% and 15% asp, and type n for substitution asp 20% and 25% (sni-03-6882 -2002). Bonding strength of mortar was 0.09 mpa (0.9 kg/cm2) at 25% has substitution of asp, while others were not measurable because the specimen were bricks broken, before the bonding between the bricks was loose. Keywords: mortar, rice husk ash, physical and mechanical properties
PROTOTYPE POMPA APUNG SARITO SARITO; WARJIYO WARJIYO
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.v12i1.495

Abstract

ABSTRACT Floating pump is a water pump than can flat and adapt to the level of water surface. This water pump is solution of the problem happens because of the significant increase an decrease of the level of water. If this 125 watt water pump installed on the ground surface it is unable to suck water because the well water depth passes the maximum height of the water pump’s ability to suck water. If the water pump installed by hanging over the well, there is possibility of being soaked when the level of water surface increased. Working principal of the floating pump is based on the archimedes law, where every object that immerses in a liquid (water) will get a force to the top which valve is as big as the liquid removed by the object. Floater loaded by air install under the pump’s plate and support the weight of the floating pump system so that the system can float. The floating pump can be used and relatively stable of the shake of the machine pump and of the increase and decrease of the water level because it follows the increase and decrease velocity of the well water level. Flexible water pipe gives flexibility to the pump system to go up and down, following the water level. Height of the suction is not very high less than 20 cm and it is always constant because the pump system floating on the water surface. If it is compared by the maximum suction, 9 meters, it doesn’t affect the suction debit. Along with the level decrease of the pump system following the degradation of the well water level when the pump operated, there is a decrease in the debit because of the height increase of pushed pipe. Key words: floating pump, floater, water.
ANALISIS KERUSAKAN STRUKTUR PERKERASAN DAN TANAH DASAR PADA RUAS JALAN SEMEN – NGLUWAR KABUPATEN MAGELANG EKO WIYONO
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.v12i1.496

Abstract

ABSTRACT Evaluation of the condition of the road pavement structure required prior to maintenance and repair . This study aims to determine the type of damage , extent of damage , and determine how to repair the damage road pavement cement - ngluwar . The research includes assessing pavement conditions visually using pci method by dividing the road into 52 segments , dynamic cone penetrometer test ( dcp ) subgrade , test california bearing ratio ( cbr ) field in base layer , traffic surveys , and analysis using the additional thick layer methods of aashto , 1993 . The results showed that , the visual type of damage that occurs is alligator cracking , block cracking , depression , long and transverse cracking , patching , raveling & weatering , rutting , extensive damage to 25.30 % , the dominant type alligator cracking damage 14.23 % of the total area and obtained an average value of 50.06 pci or pavement conditions are (fair ) . Dcp test results of subgrade cbr values obtained on average 10.33 % , the results of the field test cbr cbr base layer is obtained on average 65.70 % , the survey results obtained lhr traffic as much as 2397 vehicles / day . Repair damage in accordance with the location , type , and extent of the damage , it is better if done additional coating ( overlay ) , a thick layer of additional analysis , with a design life of 10 years acquired an additional layer 5cm thick . Keywords : pavement, condition, damage, subgrade, repairs
HUBUNGAN ANTARA SUDUT PEMAKUAN DAN BEBAN TEKAN AKSIAL SEJAJAR SERAT PADA SAMBUNGAN BERHIMPIT PAPAN KAYU Mursid Mufti; Putera Agung M. Agung
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.v12i1.587

Abstract

Relationship between angle of nailing direction and axial force in line with wood fibre has not been discussed yet indetail of “peraturan konstruksi kayu untuk indonesia (pkki), ni-5, 1961, in all section 15”, which explaines about wood joints with standard nailing. Nail material is one of joint instrument types which are used largely in wood construction. Research uses model test where variation of angle of nailing direction is apllied in one type of wood lap joint, and loads variation in loading test is accounted by amount of fabricated brickwall causing rupture of wood lap joint tested. The research shows that angle of nailing direction in range 60 – 140o would result maximum axial force in line with wood fibre. Keywords: angle of nailing direction, axial force
STUDI KASUS KERUSAKAN JEMBATAN DAN PENGARUHNYA TERHADAP SISA UMUR JEMBATAN Andi Indianto; Iwan Supriyadi
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.v12i1.589

Abstract

This paper presents the results of research case studies of bridge damage and influence on the remaining life of the bridge. This research takes the case of the highway bridge between kebon jeruk – penjaringan west of jakarta. The purpose of this activity is to get an idea of the residual life of the bridge that is related to the presence of defects in the structure of the bridge. To determine the actual condition of the bridge, performed data collection by measuring the compressive strength of concrete, crack depth, crack width, thick concrete cover, reinforcement diameter, reinforcement spacing, deflection due to load and run. From these data made feasibility and serviceability analysis to determine the value of the bridge.condition. Furthermore value condition used to predict the residual life of the bridge. The results of the residual life analysis showed that highway bridge on 1 segment , who suffered damage to the value of the condition 2.67, residual life if the damage continue only 1.07 years, and if the damage does not continue, the remaining life of 11.67 years. For segment 3 which suffered minor damage with the value of condition 2, residual life if the damage continues only 2,125 years, and if the damage does not continue the residual life of 18.89 years. Keywords: bridge, pile slab, value condition, feasibility, serviceability, remaining life.
KARAKTERISTIK BETON ASPAL DENGAN SUBSTITUSI AGREGAT LIMBAH INDUSTRI PENGOLAHAN BIJI BESI (STEEL SLAG) Nunung Martina; Rinawati Jakfar
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.v12i1.591

Abstract

Hot mix asphalt concrete with substitution of waste metal processing ( steel slag ) aggregate is the result of residual waste processing or a crust of iron ore furnace , visually shaped as hard lumps and irregularly shaped rock , has a specific gravity > 2.9, steel slag considered as a heavy aggregate. According to the sii 0052-80, steel slag that had less than 27% destroyed sections through a 1.7 mm sieve when tested with los angeles engines, can be used as aggregate. A 50% substitution variation of steel slag aggregate provides characteristics of asphalt concrete mixtures that is eligible to the bina marga 1998 requirement, with the optimum value at the variation of 50 % steel slag to coarse aggregate, with the stability value of 1016.00 kgf, melting value ( flow ) has the lowest value of 3:32 mm , marshall quetion optimum at 306.30 , cavities in aggregate > 16 % , the cavity filled with asphalt > 65 % , the cavity in a mixture of 3 % - 5 % . Keywords : steel slag , filler , marshall test , temperature , asphalt concrete

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