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All Journal Jurnal Teknik Sipil dan Perencanaan Jurnal Ilmiah Dinamika Rekayasa (DINAREK) Jurnal Rekayasa Sipil dan Lingkungan Jurnal Jalan Jembatan
Bagyo Mulyono, Bagyo
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Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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Program Komputer Untuk Perhitungan Kolom Beton Akibat Beban Aksial Tekan Dan Lentur Biaksial Pada Rangka Dengan Pengaku (Braced Frame) Dan Tanpa Pengaku (Sway Frame) Mulyono, Bagyo
Dinamika Rekayasa Vol 2, No 1 (2006): Dinamika Rekayasa - Februari 2006
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2006.2.1.12

Abstract

Column calculation on frame system is a long and iterative process. This program is used to calculate column on general aspects, these aspects are slender, biaxial, braced frame and sway frame. This program uses Borland Delphi 7.0 language. Data input consists of material data (fy, f�c), load data (Pu, M1bx, M2bx, M2sx, M1by, M2byand M2sy), column data (b, h and L) and beam data(bb, hband Lb). The gained result is the table that contains output data of calculation, that is slender limit, k.Lu/r, ψA, ψB, k, δB, δS, Mc, As, As/Ag, β, Pn pl, Pn ada, Mn pl, Mn adafor axe x and axe y. For validation, output of calculation can be compared between manual and program calculation. The results of comparison are the biggest error percentage 0,0054% and smallest error percentage 0% (not difference). This is because in manual calculation there is always rounding every step, while in the computer calculation rounding is done at the end of process. Performance of the program is proper and satisfying to be used in short time and accurate.
Laboratory Testing Performance of Hot Mix Asphalt Containing Waste Materials Susanto, Hery Awan; Mulyono, Bagyo
Jurnal Teknik Sipil dan Perencanaan Vol 24, No 1 (2022)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v24i1.34426

Abstract

Abstract. Road conditions are frequently subjected to damage that outlasts the road's design life. One of these is due to the material's mechanical capability, which is insufficient to withstand traffic loads and weather conditions. The incorporation of plastic and tire waste into Hot Mix Asphalt is one of the efforts to improve the material's mechanical quality (HMA). In addition to reducing the asphalt concentration in the mixture, the percentage of plastic and tire debris reduces the environmental impact. The use of plastic and tire waste in HMA can aid in the creation of green roads. The goal of this research is to see how plastic and tire waste affect HMA performance in Marshall testing. The research was conducted by making test samples with variations of waste materials percentage. Then, the Marshall test was carried out. Analysis of test results includes volumetric properties and Marshall characteristics. The test results showed that the addition of plastic and tire waste was able to improve the performance of the HMA mixture. However, the performance of the HMA mixture will decrease due to the influence of water soaking the HMA mixture. The addition of the optimum waste was obtained by 2.5% at the optimum asphalt content of 5.5%.
KINERJA PERKERASAN ASPAL BERPORI DENGAN CAMPURAN LIMBAH PLASTIK DAN KARET Susanto, Hery Awan; Mulyono, Bagyo; Widyaningrum, Arnie; Herry Purnomo, Widhiatmoko
Jurnal Jalan Jembatan Vol 40 No 1 (2023)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58499/jatan.v40i1.1126

Abstract

One of the measures to mitigate climate change is to to apply a porous asphalt mixture in pavement construction. The use of porous asphalt mixture is still limited, because of low performance compared to some other asphalt mixtures. A comprehensive study to improve the optimal performance necessary to problems improve the application. This research aims to determine the performance of porous asphalt using plastic and used tires waste  mixed into asphalts by using some laboratory testings (both in dry and in wet conditions) according to AAPA 2004. Indirect Tensile Strength (ITS) (both in dry and wet conditions), ravelling, and permeability are obtained with variations plastic and used tires waste levels of 1-3%. There is an increase in Marshall performance, resistance to cracking, ravelling (based on abrasion test) on porous asphalt mixtures with plastic and used tires waste. A porous asphalt mixture with 2% of plastic and used tires waste has produced a good level of durability indicated by the Residual Strength Index (IKS) value and from the Tensile Strength Ratio (TSR) value at all levels of plastic and used tires waste. From the value of porosity and moisture resistance, a decrease in the level of porosity and moisture resistance are shown. The decrease that occurred at 2% plastic and used tires waste level was not too high between dry and wet condition samples. The results of this study recommend that the addition of plastic and used tires waste at 2% can produce a good quality of porous asphalt mixture.
The Effects of Slope Height and Rain Intensity on the Stability and Cost of Retaining Walls: Pengaruh Ketinggian Lereng dan Intensitas Hujan Terhadap Stabilitas dan Biaya Dinding Penahan Tanah Albab, Moch. Nurul Ulil; Mulyono, Bagyo; Apriyono, Arwan
Jurnal Rekayasa Sipil dan Lingkungan Vol. 9 No. 1 (2025): Jurnal Rekayasa Sipil dan Lingkungan
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jrsl.v9i1.53699

Abstract

Slope failures frequently occur due to geomorphological, hydrological, and human activity factors. Retaining walls (DPT) can serve as a mitigation solution by resisting lateral soil pressure and preventing slope collapse. The critical factors influencing stability are slope height and rainfall intensity—increased height reduces stability, while rainfall weakens soil strength. Material selection is essential for optimizing both cost and performance. This study analyzes the influence of material type, slope height, and B/H ratio (0.3–0.7) on stability and cost using finite element and limit equilibrium methods. The retaining walls were constructed using two materials: stone masonry and reinforced concrete, with wall heights (H) ranging from 1.5 to 10 meters. The results indicate that every 0.5-meter increase in wall height reduces the safety factor (SF) by 5.61–6.53% for stone masonry and 5.47–6.08% for concrete. Stone masonry walls provide a higher SF, averaging 10.39% greater than reinforced concrete, with a more significant improvement in SF relative to the B/H ratio. Cost analysis reveals a linear relationship between SF and construction costs—higher safety factors require greater expenditures. Stone masonry retaining walls demonstrate higher stability and cost efficiency in achieving the minimum required SF compared to concrete walls. ABSTRAK Fenomena keruntuhan lereng yang sering terjadi akibat faktor geomorfologi, hidrologi, dan aktivitas manusia. Dinding Penahan Tanah (DPT) dapat menjadi solusi sebagai langkah mitigasi. DPT berfungsi menahan tekanan lateral tanah dan mencegah keruntuhan lereng, dengan ketinggian lereng dan intensitas hujan sebagai faktor kritis. Peningkatan ketinggian menurunkan stabilitas, sementara hujan mengurangi kekuatan tanah. Pemilihan material penting untuk optimasi biaya dan kinerja. Penelitian ini bertujuan menganalisis pengaruh material, ketinggian lereng, dan rasio B/H (0,3–0,7) terhadap stabilitas dan biaya menggunakan metode elemen hingga dan kesetimbangan batas. Material DPT yang digunakan adalah pasangan batu kali dan beton bertulang, dengan tinggi lereng DPT (H) 1,5-10 m. Hasil menunjukkan bahwa setiap penambahan ketinggian DPT 0,5 m mengakibatkan penurunan faktor keamanan (SF) sebesar 5,61–6,53% (pasangan batu kali) dan 5,47–6,08% (beton). DPT pasangan batu kali memberikan SF lebih tinggi rata-rata 10,39% dibanding beton, dengan peningkatan SF lebih signifikan terhadap rasio B/H. Analisis biaya menunjukkan bahwa terdapat hubungan linier antara SF dan biaya konstruksi, semakin tinggi SF maka biaya yang dibutuhkan semakin tinggi. DPT pasangan batu kali memberikan stabilitas yang lebih tinggi dan efisien untuk SF minimum.  
Co-Authors Albab, Moch. Nurul Ulil Arnie Widyaningrum, Arnie Arwan Apriyono Herry Purnomo, Widhiatmoko Hery Awan Susanto