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I Nyoman Sugita
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Civil Engineering, Building, Construction & Architecture

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TEGANGAN GESER ULTIMIT EPOXY-RESIN PADA SAMBUNGAN BALOK KAYU YANG DIBEBANI GAYA TEKAN SEJAJAR SERAT Dharma Putra; I Nyoman Sugita; Ni Wayan Padmi
Jurnal Ilmiah Teknik Sipil Vol. 11, No. 2 Juli 2007
Publisher : Department of Civil Engineering, Udayana University

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Abstract

he goal of this research is to study the ultimate shear of Epoxy- resin at wood bar connection due to parallel fibre of wood centric load. Specimens are kamfer wood bar, 15% water content, size 4/20, connected by 2 x 3/ 20 side by side using Epoxy- resin . There are five treatments with the area of Epoxy- resin are 200 cm2 , 400 cm2, 600 cm2 , 800 cm2, 1000 cm2 and two replication each. Specimens is loaded by increament parallel fibre of wood centric load until connection failure. The results show that the ultimate shear stress of Epoxy- resin of each treatment are 3.38 MPa , 3.12 MPa, 3.09 MPa, 3. 25 MPa and 3.4 MPa. The average ultimate shear stress is 3.25 MPa . The Epoxy- resin can be used asa an alternative material for wood connector, has highly efficience and brittle behavior.
PEMANFAATAN LUMPUR LAPINDO SEBAGAI BAHAN SUBSTITUSI SEMEN PADA PEMBUATAN PAVING BLOCK Ngk. Made Anom Wiryasa; I Nyoman Sugita; Agus Surya Wedasana
Jurnal Ilmiah Teknik Sipil Vol. 12, No. 1 Januari 2008
Publisher : Department of Civil Engineering, Udayana University

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Abstract

he aim of this research was to obtain the benefits of Lapindo silt as cement substitution material in fabricating paving block with the most ideal mixture composition evaluated from compressive strength and water absorption with physical quality based on PUBI-1986. Paving block were made using Lapindo silt as cement substitution with composition that were A mixture (100% PC; 0% LS), B mixture (90% PC; 10% LS), C mixture (80% PC; 20% LS), D mixture (70% PC; 30% LS), and E mixture (60% PC; 40% LS). Fabricating process of paving block started from material preparation, making mixture, molding, curing, selection, and then followed by conducting the research by compressing the paving block and obtaining the water absorption. Based from water absorption, result of this research showed that the mix D has better benefits of Lapindo silt as cement substitution material with optimum water absorption and decreasing compressive strength. This was caused by SiO2 contained in the mixture (as filler) and also supported by CaO (as a binder between materials). The small value of water absorption can also increase the durability of paving block. The best composition was D mixture, where has optimum water absorption with little decreasing in value of compressive strength.
KEKAKUAN LATERAL STRUKTUR PELENGKUNG TEGAK DAN MIRING PADA JEMBATAN PELENGKUNG TERIKAT Made Sukrawa; I Nyoman Sugita; Bobby Benniardi Hadi
Jurnal Ilmiah Teknik Sipil Vol. 11, No. 1 Januari 2007
Publisher : Department of Civil Engineering, Udayana University

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Abstract

Untuk meneliti kekakuan lateral jembatan pelengkung, modifikasi terhadap bentuk geometris struktur pelengkung telah dilakukan dengan memiringkan secara perlahan-lahan pelengkung tegak dengan variasi kemiringan yang dinyatakan dengan perbandingan dimensi horisontal dan vertikal pelengkung. Tiga tipe kemiringan pelengkung ditinjau yakni: T1, 3/28,5; T2, 5/28,5; T3, 7/28,5. Data awal penampang dari struktur jembatan yang dianalisis dan didesain diambil dari gambar rencana Jembatan Tukad Unda. Pemodelan, analisis dan desain struktur jembatan dengan pelengkung tegak dan miring mempergunakan software SAP2000 Versi 8.08. Sebelum jembatan pelengkung tegak dan miring dibandingkan, struktur dirancang untuk memenuhi syarat kekuatan yang diukur dengan rasio tulangan yang diperlukan. Hasil analisis menunjukkan bahwa kemiringan pelengkung sangat berpengaruh terhadap kekakuan lateral struktur. Semakin miring struktur pelengkung, semakin besar kekakuan lateralnya. Komponen struktur yang paling dipengaruhi oleh miringnya pelengkung adalah ikatan angin dan balok induk. Semakin miring pelengkung, maka gaya-gaya dalam pada ikatan angin semakin mengecil. Hal sebaliknya terjadi pada balok induk dimana gaya-gaya dalam pada balok membesar dengan bertambahnya kemiringan pelengkung. Simpangan lateral pelengkung dengan kemiringan terbesar, T3 hanya 33% dari simpangan lateral pelengkung tegak.
Co-Authors Agus Surya Wedasana Bobby Benniardi Hadi Dharma Putra Made Sukrawa Ngakan Made Anom Wiryasa Ni Wayan Padmi