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All Journal PILAR Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa
Robinson Martianus Silalahi
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Energy Engineering Environmental Science Transportation

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PENGARUH ABU SEKAM SEBAGAI PENGGANTI SEBAGIAN SEMEN PORTLAND TERHADAP KUAT TEKAN, KUAT BELAH DAN KARAKTERISTIK BETON Lina Flaviana Tilik; Djaka Suhirkam; Muhammad Salam Bangsawan; Robinson Martianus Silalahi
PILAR Vol. 17 No. 1 (2022): Pilar: Maret 2022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Currently, research has developed that uses various kinds of additives to improve the quality of concrete, which is of higher quality, but also increases the economic cost of building a construction. This research is a mixture of cement and rice husk ash which is expected to increase the compressive strength of concrete and increase the flexural strength of the concrete. The process of processing husk ash is by filtering using a No. 200 filter. Variations in the percentage of husk ash to the volume of cement in the mixture are rice husk ash 5%, rice husk ash 10%, rice husk ash 15%. The test is carried out within 7 days, 14 days, and 28 days based on SNI 03-2491-2002. The results of this test are the optimum concrete strength value, namely normal concrete variations with an average compressive strength value of 25,078 MPa. And to produce the optimum flexural strength of concrete, normal concrete has an average flexural strength value of 4.392 MPa. So, the results of the research on the compressive strength and flexural strength of concrete with the use of rice husk ash as a cement substitute are lower than normal concrete.
Analisis komparatif kinerja lalu lintas berdasarkan pedoman kapasitas jalan indonesia 2023 dan simulasi Vissim di Persimpangan Serdang Muhammad Oka Mahendra; Robinson Martianus Silalahi
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa 240-249
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/pd.14.2.12584.240-249

Abstract

This study evaluates the operational performance of Serdang Intersection, an unsignalized three-leg junction located in a commercial area connecting Serang–Cilegon Road and Waringinkurung Road. The assessment combines analytical procedures from the Indonesian Highway Capacity Manual 2023 and microsimulation modelling using PTV Vissim software. Analysis of current conditions shows a traffic flow of 3206 passenger car units per hour, a degree of saturation of 0.75, an average delay of 12.75 seconds per passenger car unit, and a queue probability ranging from 23 percent to 46 percent, corresponding to level of service B. Projections for 2033 indicate that traffic flow will increase to 4602 passenger car units per hour, the degree of saturation will exceed capacity at 1.08, average delay will rise to 23.80 seconds per passenger car unit, and queue probability will reach 47 percent to 94 percent, resulting in level of service D. These findings underscore the urgency of infrastructure interventions such as intersection geometry optimization, priority lane adjustments, and the installation of traffic signals to mitigate congestion risks. The study demonstrates the effectiveness of integrating the Indonesian Highway Capacity Manual 2023 with microsimulation modelling using PTV Vissim (Planning Transport Traffic-Traffic in Cities Simulation Model) in comprehensively forecasting traffic performance, and it offers strategic recommendations for urban planners and policymakers.
Co-Authors Djaka Suhirkam Lina Flaviana Tilik Muhammad Oka Mahendra Muhammad Salam Bangsawan