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Info-Teknik
Published by Universitas Lambung Mangkurat
ISSN : 08532508     EISSN : 24599964     DOI : http://dx.doi.org/10.20527
Core Subject : Engineering,
Engineering
Jurnal Info – Teknik menerbitkan artikel – artikel karya orisinil dan signifikan pada Bidang Rekayasa Teknik.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 420 Documents
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PROSES DESORPSI GAS KHLOR DALAM LARUTAN SODIUM HYPOKHLORIT DENGAN MENGGUNAKAN REAKTOR TRICKLE BED Isna Syauqiah
INFO-TEKNIK Vol 6, No 2 (2005): INFOTEKNIK VOL. 6 NO. 2 2005
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v6i2.1678

Abstract

Chlorine elimination from aqueous solution by desorption process in trickle bed reactor was investigated. The object of this research is to study the chlorine desorption process from aqueous solution that containing free chlorine using a trickle bed reactor packed with rasching ring. The experiment conducted in the trickle bed reactor with the following specification : glass column with 4.6 cm diameter and 35 cm length; raschig ring packing  0.3 cm diameter and 0.85 cm length. The solution aqueous containing free chlorine is made from dissolving a certain quantity of sodium hypochlorit (NaOCl) in water with addition of hydrochloric acid (HCl). The operating conditions of experiment are : room temperature, atmospheric pressure and initial concentration of NaOCl = 0,1%, and the experiment varibles are : pH of solution (1 – 5) ; gas flow rate (232 ml/s – 85 ml/s). The result of experiment shows that the chlorine concentration decrease significantly with decreasing pH. However, it’s slygtly influence by the gas flow rate.
KARAKTERISASI HASIL PENGELASAN GTAW PADA BAJA KARBON RENDAH DENGAN VARIASI SUDUT GEOMETRI ELEKTRODE DAN BESAR ARUS PENGELASAN Lisa Agustriyana
INFO-TEKNIK Vol 18, No 1 (2017): INFOTEKNIK Vol. 18 No. 1 2017
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v18i1.3880

Abstract

In the application of welding "GTAW" has several advantages such as welding does not need to be cleaned from slag or corrosion residue. Due to the above-mentioned advantages, the precise determination of weld parameters and offset by the welding skills of welded characteristics will be affected. The purpose of this research is to know the characteristic of GTAW welding on low carbon steel, by observing the shape of weld bead and supported by the result of macro photo of weld result from various variations of currents and variations of geometry angle of tungsten electrode.The method used in this research is experimental method, with treatment of parameter setting of current and parameters of geometric angle variation of torsion of tunsten electrode. Analyze method is done to welding result and macro photo of T connection weld result.From the analysis of GTAW weld metal form with type T connection through variation of geometry angle of electrode and strong welding current in this research, it can be drawn some conclusions, among others, from some variation of weld geometry angle which gives good shape of weld characteristic and deep penetration is angle 300 of ampere 90 A.
PENGENDALIAN CACAT AKUSTIK GEDUNG SULTAN SURIANSYAH DITINJAU DARI ASPEK PERANCANGAN ARSITEKTUR Akbar Rahman
INFO-TEKNIK Vol 7, No 2 (2006): INFOTEKNIK VOL. 7 NO. 2 2006
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v7i2.1714

Abstract

Acoustic factor in building is one of main factor in room design . this consist of listening and communication between room user. Special building like Opera House, Cinema, meeting room need a special treatment in sound positioning. A distorsion noise will created a bad sound for listener in a room. This conditions call a devective acousting (cacat akustik). For building with this problem need a redesign for a better sound. Redesign need to think for quality of building materials, typology of structure and design. Sultan Suriansyah building the biggest hall in Kalimantan selatan have a problem with this acoustic.  This problem created because of unstable sound diffraction on floor, wall and top side of the building. 
PENGARUH PERKUATAN ANYAMAN BAMBU DENGAN VARIASI JARAK DASAR PONDASI KE LAPIS ANYAMAN DAN LEBAR ANYAMAN TERHADAP DAYA DUKUNG PONDASI MENERUS PADA TANAH PASIR POORLY GRADED Muhammad Afief Ma'ruf
INFO-TEKNIK Vol 15, No 2 (2014): INFOTEKNIK VOL. 15 NO. 2 2014
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v15i2.222

Abstract

For a poorly graded sand that need a reinforcement held a loading test using a strip foundation model that gives the result of ultimate bearing capacity from the interaction diagram between the sand settlement and the value of bearing capacity, with the bearing capacity ratio (BCR) got from the comparison between the value of ultimate bearing capacity of reinforced sand and without reinforcement. From the test conclude that with the vary of space between bottom foundation to matt and with of matt also produce a vary of bearing capacity ratio. Keywords : Bearing Capacity Ratio, Strip Foundation, Bamboo Matt Reinforcement, Ultimate B.C.
PERBANDINGAN SUHU PENYIMPANAN ELEKTRODA TERHADAP KEKERASAN BAJA KARBON Gumono Gumono; Syamsul Hadi; Bambang Irawan
INFO-TEKNIK Vol 19, No 1 (2018): INFOTEKNIK Vol. 19 No. 1 Juli 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v19i1.5139

Abstract

The welding is the process of connecting two metals, where factors that influence are current, voltage, plate thickness, gap shape and heating temperature of the electrode. The heating of this electrode aims to stabilize the arc arising during welding. The objective of the study was to determine the maximum hardness of low carbon steel welding with E 7018, with temperature of electrode storage at temperature 50, 75 and 100 ° C. Determine the maximum change in the hardness of the welded by using heated electrodes preheated to an initial temperature of 50, 75 and 100 ° C. Compare its hardness to the standard. The specimen-making method is based on JIS Z 3121, further data are compared against the standard. The result of maximum hardness value for slit I is 175HV and for slit V 264HV in weld area with temperature 75 ° C, hardness change of 33HV for temperature 100 °C.
Sedimentasi Pertemuan Dua Buah Sungai Pada Sungai Mangkauk dan Sungai Riam Kiwa Holdani Kurdi
INFO-TEKNIK Vol 8, No 2 (2007): INFOTEKNIK VOL. 8 NO. 2 2007
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v8i2.1731

Abstract

Naturally river’s  function as experienced basin to transport water from its stream area and conduct in gravitation to lower area. As water source which can be used for the irrigation of, agriculture, drinking water, industrial, energy generating, transportation. This research aim to give the analysis form and place of where there are sediment load which is there in the meeting of Riam Kiwa River and Mangkauk River which is resulted by the existence of wide difference of dimension of the river and stream speed. Method used to calculate basic speed, sediment with Van Rijn method, because entangling factor speed of the river flow and basic sediment concentration.From solution result got the following conclusion: stream speed, wide and form the river very influencing to the number of sediment which can be lifted and precipitated by current, sediment item which have diameter to smaller than 2,0 mm earn is easily brought by river stream, and form the river meeting very influencing of pattern of sediment that happened. Therefore the importance of furthermore research about sediment in the river, particularly at two river cross)
Pengaruh Kehalusan Serbuk Pasir Silika Terhadap Kekuatan Tekan Mortar Fauzi Rahman
INFO-TEKNIK Vol 7, No 2 (2006): INFOTEKNIK VOL. 7 NO. 2 2006
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v7i2.1706

Abstract

Penelitian ini merupakan bagian dari penelitian beton ringan yang menggunakan serbuk pasir silika dan styrofoam. Kandungan mineral utama pasir silika berupa silikat (SiO2) dapat dipakai sebagai bahan tambahan dalam campuran beton untuk meningkatkan kekuatan. Dengan ini pasir silika diduga dapat bersifat pozzolanic dan bersifat amorf sehingga dapat dipakai sebagai cementitious material pada beton. Pasir silika dihaluskan menjadi serbuk pasir silika (sps) dengan dua tingkat kehalusan. Kehalusan I (sps I) sebesar 22,44 % tertahan pada saringan no.325 dan kehalusan II (sps II) sebesar 58,12 % tertahan pada saringn no.325. Penelitian ini diawali dengan pemeriksaan sifat fisika dan kimia serta XrayDifraction (XRD) material. Kemudian dilanjutkan dengan pengujian pasta (semen+air) dan mortar I (sps I+semen+air) serta mortar II (sps II+semen+air) dengan kadar sps 30% , 40% , 50% dari berat sps dan semen. Dari hasil pemeriksaan komposisi kimia dan sifat fisika, sps belum memenuhi spesifikasi ASTM C618-03 dan berdasarkan hasil pengujian XRD ternyata sps merupakan bahan yang bukan amorf sehingga sps tidak bersifat pozzolan tetapi hanya sebagai filler saja. Pada pengujian pasta dengan kadar sps 0 % dihasilkan kuat tekan umur 28 hari 63,267 Mpa. Pada pengujian mortar I dengan kadar sps 30%, 40% dan 50% dihasilkan kuat tekan umur 28 hari masing-masing 56,267 MPa, 40,933 MPa, 31,76 MPa. Untuk mortar II dengan kadar sps  30%, 40% dan 50% dihasilkan kuat tekan umur 28 hari masing-masing 40,467 MPa, 37,360 Mpa, 29,254 MPa. 
DESAIN MODEL MINIATUR MESIN CETAK PLASTIK INJEKSI SEBAGAI ALAT BANTU AJAR MATA KULIAH PLASTIK MOULDING DENGAN PENDEKATAN METODE KANO DAN QUALITY FUNCTION DEPLOYMENT (QFD) Etik Puspitasari
INFO-TEKNIK Vol 19, No 2 (2018): INFOTEKNIK VOL. 19 NO. 2 DESEMBER 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jit.v19i2.156

Abstract

Injection molding is the process of printing plastic products that are commonlyused for thermoplastic plastic materials. The working principle of this process isthat the plastic material is heated in a container called a barrel until it reaches itsmelting temperature. Then the material is injected into the print cavity to the brim.Once full, the plastic goods are cooled and ready to be released from the mold.The background of the researchers taking this study was because researchers wereeager to make miniature injection molding machines to be used as teachingmaterials in theory classes so that the lecturers could explain directly thecomponents and workings of injection molding machines in real terms not justimages or videos. The design of miniature models of plastic injection moldingmachines as teaching aids for molding plastic courses uses the canoe methodapproach and Quality Function Deployment (QFD). From the results of theKANO method approach obtained from 11 statement attributes of all attributesincluded in the Must Be category. None of the attributes entered the Indefferentcategory. Then the results of the KANO model correlation with Quality FuntionDeployment (QFD) are known as the priority sequence of attributes in the targetspecifications that will be used for product design. highest priority at House ofQuality (HOQ). And the final stage of the target specifications obtained can bemade of miniature injection molding machines which are used as teaching aids forplastic molding courses.
LEKATAN BAJA TULANGAN TERHADAP BETON PENGARUH PENAMBAHAN STYRENE BUTADIENE LATEX Tumingan Tumingan
INFO-TEKNIK Vol 10, No 1 (2009): INFOTEKNIK VOL. 10 NO. 1 2009
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v10i1.1757

Abstract

The characteristic of bond has influinced the structural integrity and behaviour of reinforced concrete, even the character of Latex Modified concrete (LMC) bond expected to increase the strength. Many researches have improved that some phenomenous happened to latex modified concrete (LMC). This report about some important phenomenons, such as : bond strength, bond stress, and splices. This bond strength and bond stress will be bond mechanism between concrete and steel reinforcement in reinforced concrete material is the main tool for transferring internal forces between concrete and reinforcement. In the study, a total of thirty-six cylinder concrete the 15-cm diameter and 30-cm height to bond specimens were tested. The parameter varied in the testing is three-bar diameter and two-types of bar (plain or deformed) to normal concrete and latex modified concrete. Result from the study have shown that plain bar from latex concrete to increase bond strength for 8,5%, from the bond strength normal concrete is 73.19 kg/cm2 to 79.41 kg/cm2 in latex modified concrete. That deformed bar to increase bond strength for 16,0% from the bond strength normal concrete is 87.02 kg/cm2 to 100.90 kg/cm2 in the latex concrete. 
SHEAR BEHAVIOR HOLLOW CORE REINFORCED CONCRETE BEAM Wiku A. Krasna
INFO-TEKNIK Vol 14, No 1 (2013): INFOTEKNIK VOL. 14 NO. 1 2013
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v14i1.312

Abstract

I cross-section of reinforced concrete reduce weight and concrete needs, but the reduction in strength is not too large. Based on observations I section reinforced concrete beam is quite complicated and takes much longer time for the manufacturing. Therefore another form of cross-section which is equivalent to weight reduction in I cross-section concrete beam, with hollow square cross-section of reinforced concrete beam. It is expected that hollow square cross-section of reinforced concrete has a same strength with I cross-section of reinforced concrete. So this research may provide an alternative lightweight concrete beam, efficient in materials, easy installation in the implementation of shear reinforcement, and easy in formwork manufacture. This research was conducted to identify and compare the behavior of the shear of hollow core reinforced concrete beam with an I cross-section beam that equivalent with its. This experiment is using four reinforced concrete beam length 2000 mm, a T beam with bottom flange as control beam (BK) with measurement: bfa = 600 mm, bw = 125 mm, bfb = 200 mm, h = 300 mm, tf = 100 mm and three hollow core T beam as test beam (BB1, BB2 and BB3) with measurement: bf = 600 mm, bw = 200 mm, blubang = 75 mm h = 300 mm, tf = 100 mm. This experiment is testing the static and dynamic. Static loading is performed with a four-point system load, static loads are given by the hydraulic jack. Observations on the static load carried on the first crack and at each initial crack addition until the ultimate fracture. With the parameters used is the amount of deflection, the strain of reinforcing steel and concrete, the crack pattern that has happened.From the results of the experiments can be concluded that the hollow core reinforced concrete beam can be used as an alternative to I section reinforced concrete beam. It is seen from the difference in the shear load capacity is not much different between control beam (BK) and hollow beam (BB), with the difference between BK (299.3 kN) and BB1 (337.6 kN) is 12.79%, with BB2 (350, 6 kN) or 17.14% and with BB3 (289.4 kN) or -3.31%.  

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