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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Semesta Teknika
Eko Riyanto
Program Studi Teknik Sipil, Fakultas Teknik, Universitas Muhammadiyah Purworejo, Purworejo 54111
Civil Engineering, Building, Construction & Architecture Engineering

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ANALISIS SAMBUNGAN ANTARA BALOK IWF DENGAN KOLOM BAJA AKIBAT BEBAN SIKLIK Riyanto, Eko
Semesta Teknika Vol 22, No 1 (2019): MEI 2019
Publisher : Semesta Teknika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.221236

Abstract

AbstrakPenggunaan tabung baja dengan isian beton dapat meningkatkan kekuatan gaya aksial pada kolom. Selain itu, tabung baja berfungsi juga sebagai bekisting untuk inti beton. Penelitian ini bertujuan untuk mengetahui perilaku histeristis, kekuatan, kekakuan serta pola keruntuhan pada sambungan dalam menahan beban siklik. Dalam penelitian ini, dibuat dua buah benda uji yaitu benda uji sambungan menerus balok-kolom tabung baja dengan isian beton dan benda uji sambungan menerus balok-kolom tabung baja tanpa adanya isian beton. Sambungan sayap pada profil IWF yang menghubungkan kolom dan balok dibuat menembus kolom tabung baja dan dilas pada permukaan kolom. Benda uji dibebani dengan siklus beban yang mengacu pada ACI 374.1-05. Hasil pengujian menunjukkan benda uji dengan sambungan balok-kolom tabung baja isian beton memiliki histeresis lebih besar dari kolom tabung baja tanpa isian  beton. Benda uji memiliki kegagalan  tipe daktilitas parsial jika sebagai kriteria untuk memenuhi strong column weak beam. AbstractThe use of steel tube columns has several advantages including: steel tubes also function as formwork for concrete cores, with the presence of concrete fillers in steel tubes, the compressive strength of steel tubes against axial forces will also increase. In addition the steel tube serves to prevent cracks in the concrete, and the composite column greatly increases stiffness and significant strength compared to the construction of steel frames and ordinary reinforced concrete. The connection between beams and steel tube columns must have sufficient strength to withstand earthquake loads. This study aims to determine the ability of beam joints with columns and to know the strength, as well as the pattern of joint collapse in resisting cyclic loads. In this study, a continuous steel beam column column test specimen was made with concrete fillings and continuous test specimens of steel tube columns without concrete filling. The wing joint on the IWF profile that connects columns and beams is made through steel tube columns and welded to the column surface. The test object is loaded with the load cycle referred to in ACI 374.1-05. The test results showed that the steel tube column-beam joint test object with concrete filling had a hysteresis loops larger than steel tube columns without concrete filling. The test object has a partial ductileity type failure as a criterion of strong colun weak beam.
Analisis Kuat Tekan Mortar Geopolimer Berbahan Silica Fume dan Kapur Tohor Eko Riyanto; Eksi Widyananto; Rahul Ray Renaldy
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 17, No 1 (2021): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v17i1.35901

Abstract

ABSTRACT Cement Portland is an essential ingredient in infrastructure development, but in portland cement production, there is a release of carbon dioxide (CO2). Innovation in materials in the construction of mortars, namely geopolymer mortars, is expected to reduce cement and air pollution. The research using experimental methods, aimed at locating the effect of the use of silica fume and quick lime with variations of silica fume: quick lime 90:10, 80:20, 70:30, 60:40, 50:50, using a cube mold of 5 x 5 x 5 cm as much as 120 items, for testing age 7, 14, 28 days. Research has a compressive strength with an optimum geopolymer mortar on a variation of silica fume: quick lime 70:30, which is 3.52 MPa at the age of 28. Based upon compressive strength results, apply the age of mortar 7, 14, 28 days known the longer a strong mortar age agency.  Silica fume and quick lime may be used as alternative materials to replace cement. Based on ASTM C 270 to imply mortars type K and type O. ABSTRAKSemen portland merupakan bahan material penting dalam pembangunan khususnya di bidang teknik sipil, namun dalam proses produksi semen portland terjadi pelepasan karbon dioksida (CO2). Perlu adanya inovasi bahan dalam pembuatan mortar yaitu mortar geopolimer yang diharapkan dapat mengurangi penggunaan semen dan polusi udara. Penelitian ini menggunakan metode eksperimental, bertujuan mengetahui pengaruh penggunaan silica fume dan kapur tohor terhadap mortar geopolimer dengan variasi silica fume:kapur tohor 90:10, 80:20, 70:30, 60:40, 50:50, benda uji berbentuk kubus berukuran 5 x 5 x 5 cm sebanyak 120 benda uji, pengujian umur 7, 14,  28 hari. Hasil penelitian didapat kuat tekan optimum mortar geopolimer pada variasi silica fume:kapur tohor 70:30 yaitu 3,52 MPa pada umur 28 hari. Berdasarkan hasil kuat tekan pengaruh umur mortar 7, 14, 28 hari diketahui semakin lama umur mortar kuat tekan semakin meningkat. Silica fume dan kapur tohor dapat digunakan sebagai bahan alternatif pengganti semen. Berdasarkan ASTM C 270 termasuk dalam mortar tipe K dan tipe O.
Co-Authors Eksi Widyananto Rahul Ray Renaldy