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Astonjadro
Published by Universitas Ibn Khaldun Bogor
ISSN : 23024240     EISSN : 26552086     DOI : http://dx.doi.org/10.32832/astonjadro
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Astonjadro: Jurnal Rekayasa Sipil adalah jurnal ilmiah dibidang teknik sipil p-ISSN : 2302-4240 dan e-ISSN : 2655-2086. Jurnal Rekayasa Sipil Astonjadro diterbitkan untuk mengapresiasi dan memberikan informasi ilmiah bagi peneliti, dosen serta para profesional. termasuk dalamnya pengembangan model dan konsep penelitian yang mengacu secara berkesinambungan. Jurnal Astonjadro diterbitkan oleh Fakultas Teknik dan Sains Universitas Ibn Khaldun Bogor, terbit dua kali dalam satu tahun yaitu bulan Juni dan Desember.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 507 Documents
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Optimizing Project Implementation Time and Cost Using the Least Cost Method Astariani, Ni Kadek; Pagehgiri, Juniada; Pratama, Naris
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18758

Abstract

The background of this study is project delays. In the implementation of a project, projects are often found to be delayed or the implementation of the project is not in accordance with the predetermined schedule. Optimize the time and cost of implementing a late project using the least cost analysis method. The Least Cost Analysis method is a method for accelerating work to obtain optimal project duration in a project by carrying out work activities simultaneously in the implementation of the project which can help complete a project efficiently and effectively. The SP. Buruan - Senganan - Pacung Provincial Road Construction Project is used as a case study which experienced a 10,61% delay in work progress in the 28th week. The application of the Least Cost Analysis method is only on work activities that are on the critical path in order to restore the project completion schedule to be completed according to schedule to avoid progress delays. The results of the application of the Least Cost Analysis method optimize the time and cost of completing the project on time, namely the time efficiency of 10,61% from the late time. In terms of cost, a cost efficiency of Rp. 328.135.246,76 or 2,52% is obtained.
Determination of Flow Direction and Catchment Area Model Using Quantum GIS Analysis and Remote Sensing Imagery at Nickel Mining Locations Syarifudin, Erick; Chaerul, Muhammad; Gusty, Sri
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18805

Abstract

The research location is located at IUP PT. IFISHDECO, Tbk (122.168° - 122.204° East Longitude (BT) and 4.371° - 4.404° South Latitude (LS), Tinanggea, South Konawe Regency, Southeast Sulawesi Province.. The study aims to determine the surface flow direction and catchment area model at nickel mining sites. The data is in the form of topographic data measured with a total station, by conducting spatial analysis with Quantum GIS (QGIS) and remote sensing with the Strahler method in determining the river network. The results of research conducted at the research location obtained 3 catchment areas, namely Catchment 1 covering an area of 19,021 Ha, catchment 2 covering an area of 32,691 Ha and Catchment 3 covering an area of 59.77 Ha which can be used in further analysis in the mining drainage system.
The Influence of Initial Conditions on the Swelling Potential and Swelling Pressure of Cikarang's Expansive Soil Simanjuntak, Murydrischy Panatap; Rahayu, Wiwik
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18827

Abstract

Expansive soil can cause damage to simple constructions such as roads and houses with loads less than 20 kPa. Damage occurs due to the swelling behavior of expansive soil, due to changes in the moisture content of the soil. This research aims to determine the impact of the percentage of swelling potential and swelling pressure on expansive soil in the Delta silicon, West Java. This expansive soil is known to have very high swelling potential criteria. The samples used had variations in moisture content of 27% and 32%, with variations in initial stress of 16 kPa, 36 kPa, 38 kPa, and 42 kPa. The deformation that occurs due to swelling shows that all samples will continue to increase swelling for 4320 minutes (3 days). The results on the value of swelling potential and swelling pressure are influenced by water content. When a sample with a water content of 27% was compressed with a initial stress of 36 kPa, the swelling potential value increased by a maximum of 11%, and the maximum swelling pressure value was 913 kPa. These test results confirm the presence of very high soil swelling in the test area located in the silicon delta. The results of identification and swelling tests in the laboratory show that the development potential value of this land is high, which causes a high level of damage to simple construction.
Geographic Information Systems (GIS)-Based Visualization for Black Spot Identification on the Karanganyar-Matesih Road Magfirona, Alfia; Aida, Pipit Mosque; Hidayati, Nurul; Azmi, Hafidzul
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18853

Abstract

The relatively busy traffic movement on Jalan Karanganyar-Matesih causes various transportation problems, including increasing accidents. This study aims to analyze the characteristics of accidents, factors causing accidents, and accident-prone locations (black spots) in Jalan Karanganyar-Matesih which are visualized using A Geographic Information System (GIS). This study uses primary data (road geometric data) and secondary data (data on accident characteristics and factors causing accidents). Black spots can be analyzed and identified by using the Accident Equivalent Number (AEK) and the Upper Control Limit (UCL) method. The results of this study are the type of collision in accidents that often occur on Jalan Karanganyar-Matesih is front-side as many as 72 (42%) incidents, the class of victims with the highest number is minor injuries with a total of 191 (73%) people, the gender and age of drivers who are often involved are male, namely 241 (82%) people, the age of the majority of drivers is 18-30 as many as 128 (43%) people, the type of vehicle that is often involved in accidents is a motorcycle with a total of 272 (92%) vehicles, and the time of the accident often occurs during the day (12.00-18.00) with a total of 61 (37%) incidents. The main factor causing accidents on Jalan Karanganyar-Matesih is human negligence which totals 154 (94%) incidents. The results of the calculation analysis that has been carried out using the AEK and UCL methods obtained 7 segment locations that have AEK values ​​> UCL so that they are indicated to be black spot locations.
Compressive Strength and Water Absorption of Batako Made from Additional Plastic Waste of Polyethylene Terephthalate (PET) Pratama, Romero Adi; Devi, Rida Handiana; Marwahyudi, Marwahyudi; Haryono, Yusuf Ramadhan
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18890

Abstract

Plastic has become an inseparable material from human daily life. Plastic waste has properties that are very difficult to decompose which has a negative impact on the environment, which has become a serious problem in the global context. One alternative for dealing with plastic waste that can be applied in the world of civil engineering is by reusing plastic waste as aggregate in making bricks. This research aims to determine the effect of using polyethylene terephthalate (PET) plastic waste as a partial substitute for fine aggregate in making bricks on compressive strength and water absorption. In this research, variations in the use of PET plastic waste were 0%, 5%, 10% and 15%, referring to SNI-03-0349-1989. Compressive strength tests have respective values ​​of 7.5 Mpa, 6.3 Mpa, 6.2 Mpa, and 5.7 Mpa. In the water absorption test, the respective values ​​were 4%, 4.3%, 4.7% and 7%. Adding too much plastic to the brick mixture proved to be ineffective on the compressive strength of the brick. This means that the mortar and PET plastic on the bricks cannot interlock with each other.
Slope Reinforcement Due to Landslide in Cipakancilan River, Sukaresmi Village, Bogor City Lutfi, Muhamad; Chayati, Nurul; Rulhendri, Rulhendri; Syaiful, Syaiful; Sunandar, Nandar; Insan, Muhammad Khaerul
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.19245

Abstract

In October 2022, there was a landslide in Tanah Sareal Subdistrict at Cipakancilan River, Sukaresmi Village, Bogor City. The location of the landslide occurred on the edge of the road adjacent to the Cipakancilan river, the road is an access road that connects the Regency area and the Bogor City area. The length of the landslide that occurred was 30 meters and 11.5 meters high from the Cipakancilan river water level. The construction of a retaining wall (DPT) is the right solution to maintain slope stability, namely rolling stability, shear stability and soil bearing capacity stability to restore stable slope conditions to hold the road body which can be reused as an access road for residents. This research started with an initial stage in the form of a field survey, then continued with a geotechnical investigation to determine the characteristics of the soil that experienced landslides. Based on the results of the research, it was found that the design of retaining walls of gravity type and cantilever type was analyzed using the Coulomb method for calculating lateral soil pressure and Mayerhof for calculating the stability of soil bearing capacity. For construction costs from the calculation of the cost budget plan, the results obtained for the gravity type retaining wall amounted to Rp. 1,229,923,600 (one billion two hundred twenty nine million nine hundred twenty three thousand rupiah), while the cantilever type retaining wall amounted to Rp. 1,620,913,000. 1,620,913,000 (one billion six hundred twenty million nine hundred thirteen thousand rupiah), the time of the planned implementation of gravity retaining wall work for 2.5 months or 75 calendar days, the time of the planned implementation of cantilever retaining wall work for 3 months or 90 calendar days.
The Analysis of Performance of Fery Boats Freight Transportation of Tarakan-Sebawang Route North Kalimantan Bakri, Muhammad Djaya; Azitah, Nur; Syarif, Iif Ahmad; Nawir, Daud; Harwadi, Fuad
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.20905

Abstract

UPTD Juwata Tarakan Ferry Port has opened crossing services on the Tarakan-Sebawang route (Tana Tidung Regency) since 2021. This research aims to determine the level of crossing services for passengers carrying goods on their journey. The research aims to provide input to managers to improve the quality of service performance. Data was collected through a questionnaire filled out by 70 selected respondents from a number of ferry passengers at the time the survey was conducted. Statistical analysis of questionnaire data using a validity test obtained rcount > rtable, and a reliability test obtained a Cronbach alpha value > 0.70, so the data obtained was valid and reliable. Further analysis using the Customer Service Index method obtained a CSI value of 86.66 with a very satisfactory service category. The results of the Importance Performance Analysis (IPA) method analysis of 19 measurement attributes show that there are two attributes whose performance needs to be improved. Then the results of the Quality Function Deployment (QFD) method analysis provide eight activities that must be carried out, including providing lifeboats, life jackets, marking evacuation routes on ships, qualified officers and sufficient numbers to carry out evacuations and provide services to the passenger.
Comparative Study of Rigid Pavement Design of Solo-Yogyakarta-NYIA Kulon Progo Toll Road Using MDPJ 2017 and MDPJ 2024 Tolab, Laziqoh Zahatul; Fauziah, Miftahul
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.18878

Abstract

The Solo-Yogyakarta-NYIA Kulon Progo Toll Road is one of Proyek Strategis Nasional (PSN) that has an important role in the smooth movement of traffic. The infrastructure development process must be carefully considered, especially at the planning stage. This paper analyzes the design of rigid pavement planning using MDPJ 2017 and MDPJ 2024 to determine the difference in design results and can be the best alternative design proposal so that it can provide a reference for pavement performance performance. In addition, an empirical mechanistic analysis was conducted using KENSLAB in the KENPAVE program. The program outputs stress, deflection, and service life prediction. The analysis results show that MDPJ 2017 and MPDJ 2024 with JSKN value of 125,538,693,248 have the same rigid pavement thickness value of 305 mm and with KENSLAB analysis, a service life of 1000 years is obtained. MDPJ 2017 and MPDJ 2024 do not produce significant differences, there are only differences in the tie bar spacing and dowel diameter. The different tie bar spacing and dowel diameters have little effect on the value difference in the KENPAVE output. However, the design with MDPJ 2024 has a slightly higher value than MDPJ 2017. Thus, alternative designs are needed to make the pavement performance more effective and efficient, including 200 mm, 185 mm, and 180 mm thick. From several alternative pavement designs, it is concluded that the design that produces the most optimal performance is alternative 3 with a layer arrangement of 180 mm thick slab, 100 mm LMC, and 150 mm LPA with a predicted service life of 48.2 years.
Addition of Cold Milling Waste to Increasing Compressive Strength and Water Absorption in Batako Syahputra, Damario Aji; Devi, Rida Handiana; Marwahyudi, Marwahyudi
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.18900

Abstract

The development of construction in Indonesia drives the need for more efficient and environmentally friendly building materials. One of the proposed innovations is the utilization of cold milling asphalt waste as a mixture of fine aggregate in making bricks. This study aims to determine the effect of variations in the addition of asphalt waste on the compressive strength and water absorption of bricks. The problems raised in this study include how variations in the addition of asphalt waste to bricks affect their mechanical properties. The study was conducted experimentally by making 12 brick samples measuring 30 x 15 x 10 cm using variations in asphalt waste mixtures of 0%, 20%, 25%, and 30%. Testing included compressive strength and water absorption tests at the ages of 7 and 28 days. The results showed that the addition of asphalt waste affected the characteristics of bricks. In a mixture of 30%, bricks showed the highest compressive strength value of 7.9 MPa after 28 days, while water absorption increased with increasing percentage of asphalt waste. These results indicate that asphalt waste can be used as a partial substitute for sand in making bricks without significantly reducing their structural strength. The novelty of this research lies in the use of cold milling asphalt waste which has not been widely applied to brick materials. This study concludes that cold milling asphalt waste can be used as a mixture in brick production to reduce construction waste while supporting the concept of sustainable development. This innovation provides a solution for construction entrepreneurs in creating more economical and environmentally friendly products.
Sediment Characteristics of Iron Ore Waste on the Surface of Settling Ponds K., Agus Prabowo; Gusty, Sri; Desy, Natsar
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.18944

Abstract

The Iron Ore Refining Industry in North Maluku, There is waste generated from the iron ore refining or extraction process that is deposited into a settling pond or shelter with a capacity of about 3 million cubic meters that is no longer in operation, This study describes the characteristics of iron ore waste sediments on the surface of the settling pond, with laboratory methods, namely testing physical properties based on SNI references for aggregate materials and identifying chemical compound elements with EDS. The physical characteristics of waste sediments have absorption of 3.20%, surface dry specific gravity of 3.11 gr/cc, sand equivalent of 94.4%, Modulus of Smoothness of 2.78 and Mud Content of 6.40% while for the content of chemical compounds contained in iron ore waste sediments based on the molar percentage of oxides, the highest is Iron oxide (FeO) of 70.08% then below that there is Silicon dioxide SiO2) of 18.29%.

Page 48 of 51 | Total Record : 507

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