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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Semesta Teknika Teknisia JURNAL PENDIDIKAN MIPA Ebisnis Manajemen
Novi Rahmayanti
Jurusan Teknik Sipil, Fakultas Teknik Sipil Dan Perencanaan, Universitas Islam Indonesia
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Mathematics Social Sciences Other

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Journal : Teknisia

 1 
KAJIAN LEBAR RETAK BALOK BETON AKIBAT PENGGUNAAN TULANGAN ALUMINIUM PADUAN Novi Rahmayanti; Iman Satyarno
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

The use of concrete structures in a corrosive environment requires a minimum concrete cover thickness of 50 mm.Tthick concrete cover is certainly very risky occurrence of spalling which result in reduced capacity of the cross section of the structure. For this study utilizes the aluminum alloy material as additional reinforcement bars that fill a third of thick concrete cover, where the aluminum has properties that are resistant to corrosion. The purpose of this study to obtain the contribution of aluminum alloy in the capacity of the concrete beam section and a wide crack that occurs without using reinforcement rebars. This study uses five pieces of beam specimen dimensions of 300 mm x 150 mm and a span length of 1600 mm. The beam using materials mortar, concrete and 13 mm diameters of aluminum alloy that were tested for bending strength. As for each of the aluminum ratio of 0% (B0); 0.34% (B1); 0.68% (B2); 1.02% (B3) and 1.36% (B4). Testing method requiring a single point of loading. The results showed that the load capacity of the test specimen when the first crack in the beam but not significantly increased with increasing amount of aluminum, which is equal to 1 times, 1,002 times, 1.01 times, 1.03 times and 1.07 times the beam ratio aluminum 0%. The maximum load capacity has increased along with increasing the number of aluminum, which is equal to 1 times, 1.64 times, 2.95 times, 4.00 times and 5.17 times its maximum capacity aluminum beam ratio of 0%. Rated maximum bending stress concrete (FCR) are eligible crack width 0.4 mm when conditions permit loading is an aluminum beam with a ratio of 0.68%; 1.02%; 1.36% 3.81 MPa; 3.89 MPa; 4.02 MPa.
PENGARUH VARIASI LEBAR CFRP PADA BAGIAN TARIK TERHADAP DAKTILITAS BALOK BETON BERTULANG PASKA PERBAIKAN Atika Ulfah Jamal; Novi Rahmayanti; Helmy Akbar Bale; Iqbal Haqiqi
TEKNISIA Vol. XXI, No. 1, Mei 2016
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Retrofitting should be done on reinforced concrete beams were damaged the structure, it is to restore or improve the strength and ductility. One of the innovations of materials that can be used for retrofitting is Carbon Fiber Reinforced Polymer (CFRP). The width of the CFRP used for retrofitting an effect on load and deflection occurs in the beam, it will also affect the ductility of the beam. In this study examined the influence of the width of CFRP for retrofitting to the ductility of reinforced concrete beams with dimensions of 15x20x120 cm3. The beam is loaded until cracking occurred. Retrofitting performed on beams that have been fractured by adding CFRP on the tensile reinforcement of reinforced concrete beams. The wide variationCFRP is used to repair the beam, which is 5 cm, 10 cm, and 15 cm. The results showed that the width of CFRP placed on the tensile reinforcement in reinforced concrete beam elements repair after damage affects the curvature ductility. The wider the CFRP used for the retrofit of reinforced concrete beams lead to the greater percentage decrease in ductility curvature.
Co-Authors Atika Ulfah Jamal Duano Sapta Nusantara Feri Tiona Pasaribu Havri Yumna Labiba Helmy Akbar Bale Ilman Fathurahman Iman Satyarno Iqbal Haqiqi Mahmud Kori Effendi Melita Sugiarti Syamsul Ph.D M.A. Hadi Tria Gustiningsi