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All Journal Civil Engineering Forum Teknik Sipil Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Teknik Sipil dan Arsitektur Jurnal Teknik Sipil Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Semesta Teknika Teknisia International Conference on Coastal and Delta Areas Jurnal Rekayasa Sipil Journal of the Civil Engineering Forum Wikrama Parahita : Jurnal Pengabdian Masyarakat Civil Engineering Dimension BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Astonjadro Jurnal Teknik Sipil dan Teknologi Konstruksi Jurnal Teknik Sipil dan Arsitektur Journal of the Civil Engineering Forum Prosiding Seminar Nasional Teknik Sipil UMS
Andreas Triwiyono
Departemen Teknik Sipil Dan Lingkungan, Universitas Gadjah Mada, Yogyakarta
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Journal : Journal of the Civil Engineering Forum

 1 
Retrofitting on Flexural Strength of RC Columns Using Polyester Resin Concrete Dahlia Patah; Ashar Saputra; Andreas Triwiyono
Journal of the Civil Engineering Forum Vol. 2 No. 1 (January 2016)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (558.436 KB) | DOI: 10.22146/jcef.24305

Abstract

Concrete column structures damages due to flexural moment need to be repaired and strengthened to avoid of sudden failure by applying appropriate methods. The method applied in this study was retrofitting by applying polyester resin concrete. In order to know the effect of polyester resin concrete against axial load capacity, stiffness, ductility and the damage pattern of columns by eccentrically loaded, an experimental laboratory was carried out. In this study, three column specimens are tested. The dimension of the specimen is 150 mm x 150 mm and the high of the column are 1200 mm with the effective high is 600 mm and 600 mm for corbel. The column specimens have a fixed eccentricity of 50 mm. First, initial column tested before yield point of reinforcing bar reached and concrete crack limited to 0,4mm. Further, retrofitting applied to each initial column specimen using normal concrete and polyester resin concrete with the level of resin 15% and 20%, respectively. Retrofitting column tested again with the same loading of initial column until it reaches the collapse load. The result of experiment compares to analysis method by Nawy and Whitney which represent the analysis of normal concrete column capacity. The result showed that levels of resin to be used is 20% because of better workability compared to 15% resin. Further, compressive test on resin concrete cylinder showed that the resin level at 15% and 20% are 82.82 MPa and 76.65 MPa, respectively. The strength of KR-ii decreased about 33.523%. The strength of KR-15ii and KR-20ii increased 5.08% and 24.827% respectively compared to initial column. Specimen column stiffness KR-ii. KR-15ii and KR-20ii decreased about 76.22%, 24.50% and 37.65%, respectively from the initial column. Furthermore, ductility of KR-ii, KR-15ii and KR-20ii decreased about 1.512, 1.250 and 2.50, respectively. The changes of the ultimate capacity load of KR-ii, KR-15ii and KR-20ii by Nawy Method respectively -26.54%, 12.66%, and 13.83%, whereas the method of Whitney respectively -17.68%, 26.25%, and 27.56%. The use of polyester resin concrete can change the pattern of collapse from brittle to ductile columns.Keywords: retrofit, ductility, stiffness, flexural column, eccentricity
The Estimation Modeling of Abutment Volume with Variations of Bridge Span, Abutment Height, and Seismic Zone Dicky Rahadian Mahendra; Andreas Triwiyono
Journal of the Civil Engineering Forum Vol. 7 No. 1 (January 2021)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.55280

Abstract

The initial cost of a bridge project determined using an estimation model depends on the dimensions, types, and materials but only a few studies have included bridge location as a determinant variable. The inclusion of the location is, however, important due to the different seismic accelerations and seismic load analysis attached to it. Therefore, this study aimed to create a model to calculate the quantity of materials needed for the construction of abutment in different locations with a PCI-Girder superstructure. Moreover, the data used for the quantity estimation model was derived from the abutment design results and those associated with concrete and reinforcing steel quantities were based on the variations of the bridge span at 20 m, 25 m, 30 m, 35 m, and 40 m, abutment height at 4 m, 6 m, and 8 m, and seismic zone 1, 2, 3, and 4. Meanwhile, the volume estimation models were obtained through multiple linear regression analysis. The results showed a very strong correlation between the span of the bridge and the height of abutment with the dependent variables while the seismic zone was observed to have a strong correlation with the dependent variables but was unable to meet the linear regression assumptions. Therefore, the statistical analysis was conducted separately for each seismic zone and the data for abutment height was transformed from H into H2. This study developed 8 models with R2 values ranging between 0.983 – 0.997 and this means they were adequately designed to estimate abutment volumes with a PCI-Girder superstructure.
Co-Authors Akbar, Miqdad Khosyi Albert Aun Umbu Nday Ali Awaludin Ali Awaludin Ali Awaludin Aminullah , Akhmad Aminullah, Akhmad Arief Setiawan Budi Nugroho Ashar Saputra Ashar Saputra Ashar Saputra Astuti, Yana Ay Lie Han Bambang Supriyadi Baskoro Abdi Praja Baskoro Abdi Praja, Baskoro Abdi Dahlia Patah, Dahlia Danang Purwanto Desi Maryani Dicky Rahadian Mahendra Djoko Sulistyo Dualembang, Hery Egatama, Henda Febrian Erik Wahyu P radana Erik Wahyu Pradana Eugenius Pradipto Fardila, Dinda Ferry Hariman Gatot Subagio H, I Gede Agung Shri Parta Hary Christady H. Henricus Priyosulistyo, Henricus Hsuan-Teh Hu I Gusti Lanang Bagus Eratodi Ignatius Christiawan Iman Satyarno Iman Satyarno Irawati, Inggar Septhia Irkhas Bayu Faveryan Juandra Hartono Juandra Hartono, Juandra Kasih Jhoniper Simanjuntak Kukuh Adhi Kafie Lau, Debora Marsuki M. Marsuki M. Muh. Subhan A.K. Muhammad Nur Ikhsan Muhammad, Heidi Munthe, Agyanata Tua Muslikh Muslikh Muslikh Muslikh NKA Agustini NKA Agustini, NKA Nurul Hidayati Prasetyo, Aulia Azis Priyosulistyo Priyosulistyo Purwanto Purwanto Rachmad Hidayat Saroj Mandal Setiawan, Angga Fajar Subchan, Shafira Khairunnisa Sulistiyo, Djoko Suprapto Siswosukarto Suprapto Siswosukarto Suprapto Siswosukarto Tama, Radika Gandi Tologana, Ricky Nofrianto Viorenza Everlyn Yudhistira, Angga Trisna