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All Journal JOURNAL SCIENTIFIC OF MANDALIKA (JSM) Scripta Technica: Journal of Engineering and Applied Technology
Juny Andry Sulistyo
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Other

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Lokasi Rawan Kecelakaan (Blackspot) Pengaruh Alinyemen Jalan: Studi Kasus : Ruas Jalan Prof. Dr. Ir. Sutami Bandar Lampung Miruyama; Rachmat Mudiyono; Juny Andry Sulistyo
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 6 No. 6 (2025)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol6iss6pp1479-1487

Abstract

The road that often has accidents on the uphill and downhill sections as well as sharp bends is the Prof. Dr. Ir. Sutami Road Section. This path is used by different types of vehicles, from small cars to heavy trucks making their way to the industrial area. In STA 0+000 to STA 1+200, accidents often occur because it has an uphill road contour with grades varying between 0.15% -12.61%. Referring to traffic accident data from 2015 to 2019, there have been occurrences leading to minor harm, major harm, and loss of life. For this reason, researchers need to analyze the causes of accidents, analyze road alignment, analyze how to overcome and prevent them. The approach employed involves collecting primary and secondary data, then evaluated together. The evaluation data show that the origins accident include human factors, where individuals panic when the brakes fail, vehicle factors related to operational unfitness, and road factors as the location is on a collector road with a VLHR of 13,000/SMP per day. With the presentation of trucks, 47% have a topography with a height difference of up to 39 meters at a distance of 695 meters. The results of the alignment analysis with a slope of almost 13% the slope value varies from 6% - 12% per 25 m and LOS C. How to overcome and prevent accidents are carried out safety driver training, operational vehicle regulations and. Improvement of road alignment with climbing lanes and rescue paths.
Evaluasi Optimalisasi Cash Flow Pada Proyek Multiyears Dengan Penyesuaian Perubahan Waktu Pelaksanaan (Studi Kasus Proyek Pembangunan Jalur Kereta Api Lintas Makassar-Pare pare) Andi Bongawali; Henny Pratiwi Adi; Juny Andry Sulistyo
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 6 No. 3 (2025)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol6iss3pp507-516

Abstract

The construction of the Trans-Sulawesi railway line is a railway network built to reach important areas on the island of Sulawesi. In general, the implementation of construction projects is limited by a certain time with limited resources to complete a given job, but due to the unavailability of land when the Work Start Order is issued, it causes a time addendum twice without any cost escalation. The purpose of this research is to get the optimal cash flow that can be obtained by contractors based on changes in implementation time and get the right strategy that can be applied in the future so that no more Addendum changes in implementation time can harm the implementing contractor. Data collection includes primary data by interviewing 25 respondents representing 155 populations consisting of 15 work units, 10 supervisory consultants, 25 implementing contractors and 105 land owners. Secondary data collection was carried out by requesting the necessary data from the implementing contractor. Cash Flow optimization evaluation is carried out by calculating 2 cash flow simulations, namely: Simulation 1 (823 days based on addendum 1), simulation 2 (1063 days / based on addendum 2). Determination of the right strategy to avoid addendum changes in implementation time is done using SWOT Analysis. Calculation of both simulations obtained results: In Simulation 1 (823 days) the acceleration of the implementer
Stabilisasi Tanah Lunak Menggunakan Campuran Ferronickle Slag dan Alkali Soma Shaki Hadi Nugraha; Dzulfikar Sani; Lisa Fitriyana; Juny Andry Sulistyo
Journal of Engineering and Applied Technology Vol 2 No 1 (2026): : June: Scripta Technica: Journal of Engineering and Applied Technology
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/vrm3vy68

Abstract

The Kendal Industrial Park (KIK), Central Java, is characterized by soft clay soil with low bearing capacity, requiring improvement before being used as a construction foundation. This study aims to determine soil classification, analyze the effect of ferronickel slag and alkali (NaOH and KOH) mixtures, and evaluate the potential of these mixtures as soil stabilization materials. The research was conducted experimentally in the laboratory through specific gravity tests, grain size distribution analysis, Atterberg limits, Standard Proctor compaction test, direct shear test, and California Bearing Ratio (CBR) test. The mixture variations used consisted of 10% ferronickel slag combined with alkali solutions of NaOH and KOH at concentrations of 6%, 8%, and 10%. The results showed that the original soil was classified as fine-grained soil with high plasticity and a CBR value of 5.6%, indicating low bearing capacity. The addition of ferronickel slag and alkali reduced soil plasticity and increased soil strength and bearing capacity. Therefore, the mixture of ferronickel slag and alkali has the potential to be used as an environmentally friendly alternative soil stabilization material.  
Analisis Dampak Lalu Lintas Akibat Perbaikan Jalan Majapahit Semarang: Studi kasus Jalan Majapahit, Kota Semarang Tarekh Al Aziz; Zuhair Zuhdi; Rachmat Mudiyono; Juny Andry Sulistyo
Journal of Engineering and Applied Technology Vol 2 No 1 (2026): : June: Scripta Technica: Journal of Engineering and Applied Technology
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/veqrwf61

Abstract

The growth of urban activities in Semarang City has led to an increase in traffic movement, particularly along Jalan Majapahit, which serves as a primary corridor connecting the city center with residential and industrial areas. Road rehabilitation works on this segment caused lane narrowing, resulting in reduced road capacity and affecting overall traffic performance. This study aims to analyze traffic characteristics and road performance on Jalan Majapahit before and during the road rehabilitation period. The evaluated parameters include traffic volume, side friction, road capacity, degree of saturation (DS), and level of service (LOS), based on the Indonesian Road Capacity Guidelines (PKJI 2023). The research method involved field surveys consisting of vehicle volume counts, side friction observations, and geometric road measurements. The collected data were then analyzed to determine road capacity and degree of saturation under both conditions. The results indicate that before rehabilitation, the degree of saturation reached approximately 0.736, representing relatively stable traffic conditions. However, during the rehabilitation period, the DS increased to 1.192, indicating that traffic demand exceeded road capacity, leading to congestion, reduced vehicle speeds, and traffic queues. Consequently, the level of service deteriorated from category C before rehabilitation to category E during rehabilitation
Analisis Sifat Fisik dan Mekanik Paving Block dengan Penambahan Plastik dan Crumb Rubber Benigno Faza Akbari; Muhammad Aufa Ahda Athoillah; Juny Andry Sulistyo
Journal of Engineering and Applied Technology Vol 2 No 1 (2026): : June: Scripta Technica: Journal of Engineering and Applied Technology
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/ykca8k79

Abstract

Paving blocks are construction materials made from a mixture of cement, sand, aggregate, and water. Typically, paving blocks are molded in square or rectangular shapes and are used as surface coverings for roads, sidewalks, parking lots, and other public areas. One of the reasons why paving blocks are popular is because of their load-bearing ability, durability, and aesthetic appearance. This research aims to analyze paving blocks used in construction. Another objective of the research conducted was to analyze the opportunity of using added materials, namely recycled plastic and crumb rubber in making paving blocks, which aims to produce quality and sustainable products. In experimental research, the first step is to determine the variation in the composition of the additives used. Next, paving blocks are made through a dry mixing process until they are homogeneous, then molded using hexagonal molds and compacted manually. After that, the test objects undergo a curing process for 28 days before testing. Testing of paving blocks includes compressive strength and water absorption tests to determine the effect of adding additives on the quality and performance of the modified paving blocks. The results showed that the addition of plastic and crumb rubber can increase the strength of paving blocks and ensure flexibility and the product itself, reduce production costs and effective use of industrial waste.    
Co-Authors Andi Bongawali Benigno Faza Akbari Dzulfikar Sani Henny Pratiwi Adi Lisa Fitriyana Miruyama Muhammad Aufa Ahda Athoillah Rachmat Mudiyono Soma Shaki Hadi Nugraha Tarekh Al Aziz Zuhair Zuhdi