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All Journal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Jurnal Rekayasa Infrastruktur Hexagon
Eko Darma
Universitas Islam 45 Bekasi
Civil Engineering, Building, Construction & Architecture Transportation

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Investigasi Keruntuhan Geser Balok Tinggi Beton Bertulang dan Beton Fiber Dengan Metode Eksperimental, Metode Numerik dan Metode Strut and Tie Eko Darma; Ninik Paryati
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 7 No 2 (2019): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2019)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v7i2.1749

Abstract

One reinforced beam element that experiences a shear failure is a high beam; a beam that follows a requirement based on SNI-2847-2013 standard that have the proportion of sliding span (l) and the effective height (d) not more than three. The type of collapse in high beams generally is shear failure in which the crack appears from the area around the placement, propagates and reaching the maximum value at the point of loading. Observation of crack patterns and ultimate loads can be done by several methods based on both non-linearity and linearity of materials. Two specimens consisted of one high beam conventional reinforced concrete and one high beam concrete fiber with a dimension of 170 mm x 420 mm x 850 mm were prepared. Fiber from machine turning waste was used as coarse aggregate substitution with 100% composition in fiber concrete. Both specimens were tested in the laboratory and observed for crack patterns analysis and ultimate load achievement. The experimental test results were then compared with the numerical test results for the non-linearity properties of the material and the Strut and Tie method for the linearity properties of the material. The ultimate high beam of conventional reinforced concrete when experiencing shear failure in the experimental method, numeric method, and strut and tie method were 310 KN, 290 KN, and 236.917 KN respectively, whereas in the high beam fiber concrete, the ultimate load in the experimental method, numeric method, and in the strut and tie method were 280 KN, 260 KN, and 263,917 KN respectively. The biggest ratio of test results were obtained from the comparison between the numerical and the experimental methods in conventional concrete which was equal to 0.94. This showed the similarity of non-linearity properties of the material to produce adjacent test results.
Carbon Fiber Reinforced Polymer Sebagai Perkuatan Lentur pada Balok Beton Zainurrahman -; Eko Darma; Sri Nuryati
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 8 No 1 (2020): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Januari 2020)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v8i1.1947

Abstract

Concrete Beams can experience a sudden collapse when overload because of its brittle characteristic. The use of Carbon Fiber Reinforced Polymer (CFRP) on concrete beams externally as external confinement is predicted to improve concrete mechanics properties, increase the ductility and capacity of concrete, and the flexural strength of concrete beams. An experimental study on the reinforcement of concrete beams with Carbon Fiber Reinforced Polymer (CFRP) was carried out to estimate the effectiveness of CFRP on concrete structures as a concrete beam flexural reinforcement material. Two types of concrete beams are provided in this study to test the flexural strengthening effect of the externally bound CFRP composite. First type of concrete beam used for testing is a normal concrete beams, whereas the second tested beam, the CFRP was laminated by coating the beams with Fiber. The dimensions of both types are 15cm x15cm with a length of 55cm footing range. Testing result obtained the compressive strength was 23,29 MPa, flexural strength of normal and CRFP concretes were 33,41 Kg/cm2 and 48,07 Kg/cm2 respectively. It was concluded that the use of CRFP at the concrete beam increases flexural strength up to 44% with the ratio of 143 %.
Analisis Tundaan Dan Panjang Antrian Terhadap Konsumsi Bahan Bakar Minyak Pada Perlintasan Rel Kereta Api Asep Sanjaya; Sri Nuryati; Elma Yulius; Eko Darma; Anita Setyowati Srie Gunarti; Fajar Prihesnanto
HEXAGON Vol 7, No 1 (2022): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hgn.v7i1.7852

Abstract

Perlintasan rel kereta api yang terletak di Jalan Kompas, Tambun Selatan  merupakan satu dari sekian banyak perlintasan di Kabupaten Bekasi yang terkena dampak peningkatan jumlah kendaraan sehingga mengakibatkan tundaan dan antrian panjang. Penelitian ini bertujuan menganalisa pengaruh tundaan dan panjang antrian terhadap konsumsi bahan bakar pada perlintasan rel kereta api di Jalan Kompas Kabupaten Bekasi. Analisis tundaan dan panjang antrian didasarkan pada hasil survey yang dilakukan selama dua hari kerja dan satu hari libur. Konsumsi BBM berdasarkan lama tundaan dianalisis dengan persamaan LAPI-ITB. Hubungan konsumsi BBM dengan tundaaan dan panjang antrian dianalisis dengan regresi linier berganda. Hasil analisis jumlah konsumsi BBM akibat penutupan pintu perlintasan pada arah Utara-Selatan sebanyak 9,010 liter/smp dan arah Selatan-Utara sebanyak 9,330 liter/smp. Besarnya kerugian untuk jenis BBM Pertalite Rp 25.158.638,-, Pertamax Rp. 29.598.398,- dan Dexlite Rp. 31.242.753,- selama 1 tahun. Hasil analisis dengan regresi linier berganda, tundaan dan panjang antrian memiliki pengaruh terhadap konsumsi bahan bakar pada penutupan pintu perlintasan kereta api, artinya semakin tinggi nilai tundaan dan panjang antrian semakin besar pula konsumsi bahan bakar. Model regresi linear berganda untuk konsumsi bahan bakar pada Jalan Kompas, Tambun Selatan adalah: Y = 7,800 + 0,252 X1 + 0,105 X2
Co-Authors Anita Setyowati Srie Gunarti Asep Sanjaya Elma Yulius Fajar Prihesnanto Ninik Paryati Sri Nuryati Sri Nuryati Zainurrahman -