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All Journal Potensi : Jurnal Sipil Politeknik
Ahmed, Suliman Badawi
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Labor Productivity Disparities in the Planning and Implementation Phases Prasetyo, Aditya Rachmad; Putra, I Nyoman Dita Pahang; Ahmed, Suliman Badawi
Potensi: Jurnal Sipil Politeknik Vol. 27 No. 2 (2025): Potensi: Jurnal Sipil Politeknik
Publisher : Department of Civil Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/potensi.v27i2.6287

Abstract

Infrastructure plays an important role in promoting connectivity, economic growth, and community welfare. In the construction sector, labor productivity is a crucial factor that determines project accomplishment. This study aims to analyze and compare the labor productivity during planning and implementation phase using secondary data as the main source. Data sources include a valid project documents and related regulation. The analysis carried out to find the planned labor productivity based on the cost budget plan and time schedule, the realized productivity value based on the cost budget plan and daily report, and the comparison between the two. The results showed that there was a significant variation in the labor productivity level between the planning and implementation phases of the project. There was an increase in labor productivity in several types of work including plastic cast installation 47%, D36-300 dowel installation 12%, 2-layer wiremesh 35%, Rigid Pavement K-350 28%, and joint filler work 71%. On the other hand, works such as flooring and tie-bar works experienced a decrease in labor productivity by 47% and 11%. These findings provide valuable insights for project management to improve future planning and execution, emphasizing the need for continuous labor productivity evaluation to achieve optimal result.
The Effect of Polyacrylamide Polymer Stabilization Soil on the Magnitude of Settlement and Stability of Bridge Approach Slabs Yuswandono, Mulyadi; Amalia, Dewi; Permana, Rahmat; Hendry; Arofah, Muhammad Bayu; Sulaiman , Raihan Maulana; Ahmed, Suliman Badawi
Potensi: Jurnal Sipil Politeknik Vol. 26 No. 1 (2024): Potensi: Jurnal Sipil Politeknik
Publisher : Department of Civil Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/potensi.v26i1.5840

Abstract

The main problems that often occur in embankments built on soft soil are subsidence of the subgrade and stability of the embankment. This research aims to determine the effect of applying silty clay soil stabilized by PAM on subgrade subsidence and embankment operation stability. Apart from that, this research also analyzes the effect of variations in slope on subgrade subsidence and embankment stability. Analysis uses the finite element method with Plaxis 2D V20 software. From the analysis results it is known that the use of 0.2% PAM stabilized silty clay backfill material; 0.4%; 0.6%; 0.8%; and 1% has a higher Safety Factor (SF) value than the selected embankment, where the SF increase is 28.72%; 29.90%; 30.81%; 32.75%; and 33.10%, respectively. The use of silty clay material stabilized by PAM (0.2%; 0.4%; 0.6%; 0.8%; and 1%) succeeded in reducing settlement occurring in the field respectively by 10.23%; 6.77%; 5.79%; 4.41%; and 1.09%. This means saving on the need for stockpiled materials. Variations in slope affect the decrease in the stability of the subgrade and embankments, where the smaller the slope angle, the smaller the subsidence of the subgrade and the greater the value of the embankment stability safety figure obtained.
The Effect of CBR of Soil Stabilised with Polyacrylamide on Flexural Pavement Thickness Based on SKBI 1987 Noorlaelasari, Yullianty; Juarti, Ery Radya; Suyono, Agus; Aisyah, Linda; Oktavania, Salma; Nugraha, Anissa Puspa; Ahmed, Suliman Badawi
Potensi: Jurnal Sipil Politeknik Vol. 26 No. 1 (2024): Potensi: Jurnal Sipil Politeknik
Publisher : Department of Civil Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/potensi.v26i1.5842

Abstract

Roads must have safety and comfort, which can be seen through the condition of the pavement. A good pavement is influenced by a good bearing capacity of the subgrade. Not infrequently, road damage that occurs is caused by a lack of bearing capacity of the subgrade (CBR<6). One way to improve the bearing capacity of the subgrade is to stabilize it with polyacrylamide (PAM) synthetic polymer. Subgrade stabilization was carried out on local soil at Jalan Cisasawi, Desa Cihanjuang with a percentage of 4%, 6%, 8%, 10%, and 12% of the dry soil weight. From the results of laboratory CBR testing, calculations were made to determine the effect on the thickness of flexible pavement using the SKBI 1987 method. After the calculation, it can be concluded that the CBR value affects the thickness of the flexible pavement layer. The greater the subgrade CBR value, the thinner the pavement thickness (with 8% polyacrylamide). This has been proven in the calculation where PAM managed to increase the bearing capacity of the soil to the maximum at 8% PAM content (soaked CBR 16.4% and unsoaked CBR 20.5%) and the thickness of the lower foundation layer is 25 cm (the thinnest among other levels).
Co-Authors AGUS SUYONO Aisyah, Linda Arofah, Muhammad Bayu Dewi Amalia Ery Radya Juarti, Ery Radya Hendry . Nugraha, Anissa Puspa NYOMAN DITA PAHANG PUTRA, NYOMAN Oktavania, Salma Prasetyo, Aditya Rachmad Rahmat Permana, Rahmat Sulaiman , Raihan Maulana Yullianty Noorlaelasari, Yullianty Yuswandono, Mulyadi