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All Journal SMARTek JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR MEKTEK MEDIA KOMUNIKASI TEKNIK SIPIL
Burhan Tatong
Jurusan Teknik Sipil Fakultas Teknik Universitas Tadulako Palu, Sulawesi Tengah
Civil Engineering, Building, Construction & Architecture Education

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ANALISIS GETARAN NON LINIER DAN FENOMENA CHAOS PADA SOLUSI PERSAMAAN DIFERENSIAL DUFFING Dolu, Anwar; Tatong, Burhan
SMARTek Vol 9, No 3 (2011)
Publisher : SMARTek

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Abstract

Persamaan Duffing merupakan model persamaan getaran dengan kekakuan non linier derajattiga (3). Dalam kajian ini dengan meninjau kasus getaran non linier serta kasus khusus getaranlinier. Penyelesaian persamaan diferensial Duffing menggunakan metode numerik Runge – Kuttadengan aplikasi software MAPLE ver. 14. Amplitudo yang ditinjau untuk kasus pegas yangdikeraskan (hard spring) dan pegas yang dilunakkan (soft spring) dimana semakin kecil eksitasigaya dan semakin besar nilai redaman maka lebar daerah lompatan/tidak stabil semakinberkurang. Pada kasus getaran non linier dengan fenomena chaos maka dengan tinjauansejarah waktu (time history) sangat sensitif terhadap syarat awal dengan perubahan yang kecilterhadap syarat awalnya maka akan terjadi perubahan besar dalam sistem dalam hal iniperpindahan x(t) dengan pertambahan waktu (t). Untuk Bidang Fase (phase plane) menunjukanmenunjukan lintasan yang tidak beraturan dan non stasioner, hal ini terlihat juga dengan padapemetaan Poincare (Poincare map) yang menunjukan pola tarikan yang acak (strangeattractor) dan memperlihatkan pola fraktal
ANALISIS TEKNIS PEKERJAAN BALOK-PLAT LANTAI BANGUNAN PASCASARJANA UNTAD DENGAN METODE COMBIDEC-PRESTRESS Sulendra, I Ketut; Tatong, Burhan
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 1, No 1 (2011)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Penerapan sistem pelat lantai beton prategang tanpa lekatan masih jarang digunakan di Kota Palu. Sistem ini akan efektif jika digunakan pada bangunan tipikal dan pelat lantai bentang panjang antara  7-12 m. Gedung Pascasarjana Untad yang dibangun tahun 2009 merupakan contoh pertama penerapannya di daerah ini. Metode ini merupakan salah satu metode untuk mempercepat pekerjaan, karena prosesnya berulang, perancah bisa dilepas segera setelah dilakukan pekerjaan stressing pada umur beton 7 hari sehingga tidak perlu menunggu sampai beton berumur 28 hari. Kualitas bangunan yang dihasilkan juga memiliki kualitas yang tinggi, karena bahan-bahan yang digunakan memiliki mutu yang tinggi dari segi homogenitasnya serta tenaga pemasangan icon steel dan post-tensioned strand tidak membutuhkan tenaga ahli yang banyak. Sehingga alih teknologi dari pekerja ahli ke pekerja lokal dapat terjadi. Pekerjaan pemasangan icon steel, strand, support bar, wiremesh dan perlengkapannya tidak memerlukan keahlian khusus. Hanya pekerjaan penarikan strand saja memerlukan keahlian khusus. Perawatan elemen struktur juga lebih murah karena struktur beton yang dihasilkan tidak mengalami retak-retak sehingga prosese karat tidak tejadi pada tulangan, apalagi strand sebagai pengganti tulangan sudah dilindungi dalam selubung polyethelene Hasil yang dicapai dari penerapan system pelat lantai prategang tanpa lekatan yaitu sangat memuaskan, struktur pelat yang dihasilkan sangat kuat, ringan dan mudah dalam pemeliharaanya. Bahaya karat akibat proses retakan dan oksidasi tidak terjadi. Jikalau ditunjang oleh pengadaan material tepat waktu, pekerjaan bisa lebih cepat secara signifikan dibandingkan pekerjaan system beton konvensional.
PENGARUH BAHAN TAMBAH PLASTIMENT-VZ TERHADAP SIFAT BETON Maricar, Shyama; Tatong, Burhan; Hasan, Hajatni
MEKTEK Vol 15, No 1 (2013)
Publisher : MEKTEK

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Abstract

Concrete mixture for structure of the building is expected to according to the quality and specifications desired. With the addition of admixtures materials used for concrete mix, it is necessary to know the type, properties and benefits of admixture produced by various companies. Concrete used In this study were added admixtureof Plastiment-VZ for characters investigated.In this study used two variations of concrete, ie normal concrete and concrete with the addition PlastimentVZ with usage percentage of 0.20%, 0.40% and 0.60% of the weight of the cement used in normal concrete. Cylindrical specimens used for compressive strength testing with a total of 3 pieces for each test.The test results obtained average compressive strength of normal concrete (f'cr) of 27.554 MPa, and for concrete with the addition of-VZ Plastiment of 0.20% obtained an average compressive strength, f'cr = 29.252 MPa, the concrete with the addition of Plastiment-VZ 0.40%, obtained f'cr = 30.951 MPa, whereas the addition of 0.60% for the compressive strength at 28 days obtained at 32.083 MPa.Keywords: Compressive strength, Plastiment-VZ
PENGARUH PENAMBAHAN POLYPROPYLENE FIBER MESH TERHADAP SIFAT MEKANIS BETON Hasan, Hajatni; Tatong, Burhan; Tole, Joko
MEKTEK Vol 15, No 1 (2013)
Publisher : MEKTEK

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Abstract

Polypropylene fiber is the fiber type of plastic (polypropylene) which is a special production with high technology. It is a chemical compound with the formula C3H6 hydrocarbons in the form of a single filamentor thin fibrous tissue shaped nets with a length of 6 mm to 50 mm and has a diameter of 8-90 microns. Thesefibers can be used to improve the performance of concrete.This research aims to determine how much influence the addition of polypropylene fibers on mechanicalproperties of concrete (compressive strength. split tensile strength and flexural strength). polypropylenefibers used doses of 0; 0.40 kg/m³, 0.60 kg/m³, 0.80 kg/m³ of concrete, which is made on the type of concretef'c 20 MPa with the value of water cement factor (FAS) at 0.53. Calculation of mixed concrete plans usingguidelines DOE (Department of Environment). The research location at Concrete and Building MaterialsLaboratory of the Faculty of Engineering, University Tadulako Palu. Specimens made as many as 72 piecesof 60 cylinders (D15 x 30 cm ³) and a beam of 12 pieces (15 x 15 x 60 cm ³). Specimen testing performed at28 days.Test results obtained fiber concrete compressive strength, split tensile strength and flexural strength, higherthan normal concrete. Compressive strength testing of optimum values obtained at doses 0.60 kg/m³. with anincrease of 3.62% compared to normal concrete. From testing split tensile strength and flexural strengthoptimum values obtained of each at doses of 0.65 kg/m³ and 0.58 kg/m³. For the split tensile strengthincreased 20.44% and flexural strength increased 11.26% compared to normal concrete. Keywords: polypropylene fibers. mechanical properties of concrete.
Analisis Material Beton Bertulang Pasca Kebakaran dan Metode Perbaikan Elemen Strukturnya Sulendra, I Ketut; Tatong, Burhan
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 16, Nomor 1, PEBRUARI 2008
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.136 KB) | DOI: 10.14710/mkts.v16i1.3665

Abstract

Fire is often destroyed on building structures at any time. Fired caused to change physically and mechanically of properties of reinforced concrete building. Strength, stiffness and ductility of structures generally decrease and degradation after fired. Some method to estimate and assessment residual strength of reinforced structured after fired are very importat to research and to forensic engineering structure after fired. Estimated high temperature and duration of fired after fired by phenolphthalein indicator (PP-test), CaO-free test and Hammer Test. Values of concrete compression strength and tensil strength of reinforced estimate from field samples. Some samples are put by core drill apparatus to give cylendric concrete and testing by compression testing ubit. Some concrete beams to made and to give 400ºC, 600ºC, 800ºC and 1000ºC temperature to indicated middle and heavy destroyed after fired. Flexural and shear repairing to give to those beams. To found  little to middle destroyed at GUDANG building and middle to heavy destroyed at PASAR INPRES MANONDA building after tst by by phenolphthalein indicator (PP-test), CaO-free test and Hammer Test. Concrete compression strength more than  50% decrease  after 800ºC fired and more than 20% decrease reinforced tensil strength after fired at 1000ºC fired temperature indicated middle to heavy destroyed. Repairing by CFS to the beams give result only 63% flexural strength at 800ºC and 53% shear strength at 800ºC.If fired 400ºC to 600ºC fired temperature the repairedto the beams by CFS can increase flexural and shear strength more than intact beams.Keywords: Reinforced Concrete, Fire, RepairingPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3665[How to cite: Sulendra, I.K. dan Tatong, B. (2008), Analisis Material Beton Bertulang Pasca Kebakaran dan Metode Perbaikan Elemen Strukturnya, Jurnal Media Komunikasi Teknik Sipil, Tahun 16, No. 1, pp. 48-60]
Pengaruh Pemadatan terhadap Sifat Fisis dan Mekanis Kayu Palapi Hasan, Hajatni; Tatong, Burhan
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 1, Edisi XXXI, PEBRUARI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (295.299 KB) | DOI: 10.14710/mkts.v13i1.3891

Abstract

The objective of this research is to study the effect of physical treatment, in this case is wood condensation to physical and mechanical properties of Palapi wood. In this research the wood condensation is compacted with heat treatment. Wood of Palapi accurate in form of board of tangensial of the size 2cm x 12cm x 36cm, compacted to radial direction. In this research the physical properties test is wood moisture content, wood density, and wood specific gravity. The mechanical test in this research is static elasticity strength of wood, firmness compressed parallelly of wood fibre and hardness of wood side. The properties test of physical and is mechanical were to Palapi wood plank without condensation and to palapi wood plank with condensation. The result of test   indicate that wood of Palapi compacted have the nature of physical and better mechanical from which do not be compacted, that is moisture content rate downhill 58,85%, density and specific gravity wood mount 20,41%, wood elasticity modulus value mount 49,71%, modulus of rupture value  mount 27,52%, assess firmness compressed parallelly of wood fibre mount 25,93%, assess hardness of side of tangensial mount 27,76%, assess hardness of side of radial mount 18,07%. This matter of indicate that with condensation hence quality of wood can mount goodness seen from strength and also its durability.Keywords: physical and mechanical of palapi woodPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3891[How to cite: Hasan, H. dan Tatong, B., 2005, Pengaruh Pemadatan terhadap Sifat Fisis  dan Mekanis Kayu Palapi, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 1, pp. 1-15]
Co-Authors Anwar Dolu Hajatni Hasan I Ketut Sulendra Joko Tole Shyama Maricar