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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL IPTEK Journal of Proceedings Series Journal of Engineering and Technological Sciences Mekanika Jurnal Teknik Sipil Journal of Advanced Civil and Environmental Engineering Civil Engineering Dimension Portal: Jurnal Teknik Sipil JIIP (Jurnal Ilmiah Ilmu Pendidikan) Edu Sociata : Jurnal Pendidikan Sosiologi Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Jurnal Jalan Jembatan Journal of Engineering and Technological Sciences Jurnal Teknik Sipil
Iswandi Imran
Institut Teknologi Bandung
Religion Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences Transportation Other

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Efek Arus Berlebih Proteksi Katodik Terhadap Penurunan Kekuatan Lekatan Antara Baja Tulangan dan Beton Kristianto, Anang; Imran, Iswandi; Purwadaria, Sunara
Jurnal Teknik Sipil Vol 1 No 1 (2003): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v1i1.10326

Abstract

The results of a study on the effect of overcurrent on the bond strength between reinforcing steel and concrete are presented in this paper. Cathodic protection with a constant current density, based on the surface area of reinforcing steel, was applied to the test specimens for 5 months. A chloride mixture of 1.5% and 3.0% by weight of cement was added to the concrete mix in the form of CaCl2, to analyze the effect of CaCl2, and chloride concentration on the bond strength of reinforcing steel and concrete when cathodic protection current was applied. In this study, it was found that excessive current flowing into reinforcing steel resulted in a decrease in the bond strength between reinforcing steel and concrete. The decrease in bond strength in normal concrete (without CaCl2 admixture) was 4.33%, 9.63%, 13.29%, and 25.93% for current densities of 40, 200, 500, and 1000 mA/m2, respectively. In specimens with a mixture of CaCl2, 1.5%, there was an increase in adhesion strength of up to 108% for the protective current density, but at excess current density there was a decrease of up to 45.2%. SEM-EDS test results also showed a significant accumulation of Na and K and a reduction of chloride around the reinforcing steel. The formation of Na and K at the interface of reinforcing steel and concrete causes softening of the concrete which results in a decrease in the bond strength between reinforcing steel and concrete.
Bridge Capacity Assessment through LRFR Method and Bridge Seismic Performance Evaluation Using the PBSD Concept: Case Study Sabara, Akhmad Ilham Ramadhan; Imran, Iswandi
Journal of Engineering and Technological Sciences Vol. 56 No. 1 (2024)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.1.2

Abstract

In this study, a comprehensive evaluation was conducted of the condition and performance of a concrete arch-type bridge located in close proximity to a fault. Utilizing the LRFR capacity assessment method and seismic performance analysis through the NLTHA process based on the PBSD concept, finite element modeling (FEM) was employed with a focus on construction stage analysis and model updating for calibration to site conditions. The assessment encompassed the determination of the rating factor for structural elements under service and ultimate limit state loading. Performance analysis under seismic loads includes an examination of engineering demand parameters such as concrete and reinforcement strains in columns, subjected to varying seismic hazard levels. Additional scrutiny involves assessing bearing displacement and overturning potential to identify potential damage before column failure. The primary objective of this research was to investigate pertinent and efficient techniques for evaluating bridge capacity and seismic performance. A thorough understanding of these methods is expected to facilitate the identification of suitable solutions to enhance the safety and reliability of bridges in Indonesia.
Co-Authors -, Asrurifak Adhijoso Tjondro Adhijoso Tjondro Agus Himawan Alatas, Idrus Muhamad Amrinsyah Nasution Amrinsyah Nasution Amrinsyah Nasution Amrinsyah Nasution Anang Kristianto Ananta Sofwan Ananta Sofwan Ananta Sofwan Anggadinata, Yusmar Antonius Antonius Antonius Antonius Arif Hidayat Aris Aryanto Asrurifak - Asrurifak, Muhammad Bambang Budiono Bambang Budiono Bambang Budiono Bambang Budiono Bambang Budiono Bambang Budiono Bambang Budiono Bambang Budiono Bambang Sunendar Bambang Sunendar Bambang Suryoatmono Bigman M Hutapea Bigman M. Hutapea Budiono, Bambang Budiono, Bambang Burhanuddin Burhanuddin Daony Roha Silitonga Delfebriyadi Delfebriyadi, Delfebriyadi Dionysius M. Siringoringo Ediansjah Zulkifli Editia, Rakhma Nur Elvira Elvira Erwin Lim Hanafi Ashad Hanafiah, Hanafiah Hartasurya, Pasca Herlien D Setio Herwani . Hudaya, Chairul Hutapea, Bigman M Hutapea, Bigman M. Ivindra Pane Ivindra Pane Ivindra Pane Ivindra Pane James Michael Johnny Setiawan Kamaruddin, Samira Albati Binti Kartawiria, Andi Kurnia Setiadi Kurniawan, Yusrizal Lim, Erwin Made Suarjana Maharani, Yusuf Manurung, Ardita Elias Masyhur Irsyam Mikhail, Reguel Mohamad Sahari Besari Mohamad Sahari Besari, Mohamad Sahari Muhammad Asrurifak Muslinang Moestopo Nazir, Ramli Bin Nuroji Nuroji Partogi H. Simatupang, Partogi H. Pranata, Yosafat Aji Purwoko, Agus Raden Mariana Sari Badriah Remigildus Cornelis Ria Ananda Riawan Gunadi Ronald Simatupang Sabara, Akhmad Ilham Ramadhan Saptahari Soegiri Saptahari Soegiri Saptahari Soegiri Saptahari Soegiri, Saptahari Saptahari Sugiri Saptahari Sugiri Setiawan, Muhammad Hariyadi Shinsuke Yamazaki Siswantono, Siswantono Siti Aisyah Nurjannah, Siti Aisyah Sugiri, Saptahari Sugiri, Saptahari Sunara Purwadaria Supriadi Supriadi Veby Citra Simanjuntak Wanda Lestari Wibawa, Sholeh Hendra Wibowo, Prasetyo Arief Wihardja, Thavera Yosafat Aji Pranata Yulita Arni Priastiwi