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Jurnal Rekayasa Infrastruktur Hexagon
Published by Universitas Muhammadiyah Jember
ISSN : 25282379     EISSN : 25408135     DOI : https://doi.org/10.32528/hexagon
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering
Jurnal Rekayasa Infrastruktur Hexagon yang terbit sejak tahun 2016 dimulai secara offline dan daring, dengan frekuensi 2 (dua) kali dalam setahun, pada bulan Juni dan Desember. Jurnal Rekayasa Infrastruktur Hexagonadalah jurnal ilmiah yang diterbitkan secara on-line dan menerbitkan artikel atau makalah penelitian di bidang teknik sipil yang berisi artikel tentang perencanaan, pelaksanaan dan evaluasi bangunan sipil.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 25 Documents
 1   2   3 
Analisis Komparatif Ketahanan Beton Normal terhadap Perendaman Air Laut Pantai Watu Ulo dan Air Sungai Bedadung Kabupaten Jember ulil amri; Ilanka Cahya Dewi; Hilfi Harisan Ahmad
Jurnal Rekayasa Infrastruktur HEXAGON Vol 11 No 1 (2026): Edisi Juni
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v11i1.5916

Abstract

This study was conducted to determine the effect of different curing media on the development of the compressive strength of ordinary concrete. The curing media used included tap water, seawater from Watu Ulo Beach, and water from the Bedadung River. Prior to the compressive strength tests, the fresh concrete was first tested using the slump method to determine the consistency of the mixture. Compressive strength tests were conducted at 14 days, 28 days, and 56 days. The slump test results showed an average value of 7.8 cm, indicating that the concrete mix had good workability and was suitable for on-site construction. The compressive strength test results showed that all test specimens exhibited an increase in strength as the concrete aged. At 14 days, concrete immersed in fresh water produced the highest compressive strength. However, at 28 and 56 days, concrete immersed in seawater exhibited higher compressive strength values compared to the other immersion media. The compressive strength values at 28 days ranged from 20.97 to 24.82 MPa, meaning the resulting concrete can be classified as medium-strength structural concrete. These findings indicate that the type of immersion medium influences the development of concrete compressive strength during the curing period
Perencanaan Struktur Bangunan Industri Pengolahan Kedelai pada Pabrik Tahu di Kecamatan Kaliwates, Kabupaten Jember firdaus firmansyah; Senki Desta Galuh; Arief Alihudien
Jurnal Rekayasa Infrastruktur HEXAGON Vol 11 No 1 (2026): Edisi Juni
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to design the structure of a Wastewater Treatment Plant (WWTP) for the soybean processing industry in Kaliwates Subdistrict, Jember Regency, as an effort to reduce environmental pollution caused by liquid waste from tofu production. The research stages included collecting production data, measuring wastewater flow rates, analyzing wastewater characteristics based on pH, BOD, COD, and TSS parameters, and conducting soil mechanics analysis to determine soil bearing capacity as the basis for WWTP structural design. The results of the observations showed that the wastewater generated is still discharged directly into the environment without treatment, thereby potentially degrading water body quality. The measured wastewater flow rate was 0.4372 m³/day, with BOD and COD levels exceeding established quality standards. Therefore, a wastewater treatment system combining anaerobic biofilters, aerobic biofilters, and a constructed wetland was planned, as this combination is considered effective for reducing pollutant levels. Furthermore, geotechnical analysis results indicate that the soil at the study site has adequate bearing capacity with a safety factor of 3.11, making it safe to support the planned wastewater treatment plant structure. This design is expected to serve as an effective, economical, and sustainable wastewater treatment alternative for small- and medium-scale tofu industries.
Pengaruh Penambahan Limbah Plastik Multilayer terhadap Karakteristik Campuran AC-WC Ardi Ardi Ridho; Irawati Irawati; Pujo Priyono
Jurnal Rekayasa Infrastruktur HEXAGON Vol 11 No 1 (2026): Edisi Juni
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v11i1.5980

Abstract

Peningkatan jumlah limbah plastik multilayer yang sulit dilakukan ulang menjadi permasalahan lingkungan yang masif dan perlu ditangani. Pemanfaatan limbah sebagai material alternatif merupakan strategi menekan dampak lingkungan sekaligus meningkatkan nilai guna limbah tersebut. Bidang konstruksi jalan dapat memanfaatkan limbah sebagai bahan substitusi agregat pada campuran perkerasan. Penelitian bertujuan menganalisis dampak pemanfaatan plastik multilayer sebagai substitusi parsial agregat karakteristik Marshall serta nilai Cantabro Loss campuran Asphalt Concrete – Wearing Course (AC-WC). Metode eksperimen laboratorium digunakan dengan variasi kadar plastik multilayer sejumlah 0%, 2%, 4%, 6%, dan 8% dari berat agregat. Proses pencampuran menggunakan metode kering ( proses kering ) untuk menimbulkan perubahan karakteristik campuran akibat penambahan bahan. Peranan campuran mengacu pada kadar aspal optimum 5,75%. Evaluasi kinerja campuran melalui pengujian Marshall menghasilkan beberapa parameter, yaitu stabilitas, flow , Void in Mix (VIM), Void in Mineral Aggregate (VMA), Void Filled with Asphalt (VFA), Marshall Quotient (MQ), hingga uji Cantabro Loss. Hasil penelitian menunjukkan substitusi agregat plastik multilayer meningkatkan nilai stabilitas dari 3359,13 kg menjadi 4432,13 kg. Nilai aliran meningkat dari 2,77 mm menjadi 3,91 mm, memenuhi persyaratan Spesifikasi Umum Bina Marga 2018. Hasil penelitian menunjukkan peningkatan nilai VIM dari 4,18% menjadi 7,00%, sedangkan VMA menurun dari 15,24% menjadi 14,63%. Nilai VFA meningkat dari 65,60% menjadi 68,36% dan seluruh variasi memenuhi spesifikasi. Hasil Cantabro loss menunjukkan nilai kerugian terendah sebesar 1,86% pada variasi plastik 2%. Berdasarkan evaluasi seluruh parameter, kadar plastik multilayer optimum diperoleh variasi 2% karena memenuhi seluruh persyaratan Marshall dan menghasilkan durabilitas terbaik.
Analisis Stabilitas Dinding Penahan Tanah Tipe Kantilever Akibat Beban Gempa pada Lereng Gunung Argopuro, Desa Kemiri, Jember Kia Candra Kusuma; Arief Alihudien; Ilanka Cahya Dewi
Jurnal Rekayasa Infrastruktur HEXAGON Vol 11 No 1 (2026): Edisi Juni
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v11i1.5982

Abstract

Kemiri Village, Panti Subdistrict, Jember Regency is an area located on the slopes of Mount Argopuro and has a high potential for landslides due to its steep topography and volcanic soil characteristics that are prone to instability. This study aims to analyze the stability of cantilever-type retaining walls as a mitigation measure against potential slope failures, both under static conditions and when subjected to seismic loads. The research method employed is applied research utilizing geotechnical data from field and laboratory tests, including soil unit weight, cohesion, and internal friction angle. The analysis was conducted in accordance with SNI 8460:2017 by examining safety factors against the hazards of overturning, sliding, and soil bearing capacity. The results indicate that a cantilever RWS with a total height of 4.2 m and a foundation width of 3 m provides an adequate level of safety. Under static conditions, the safety factor against overturning was 4.37 and against sliding was 2.30. Meanwhile, under seismic conditions, the safety factor against overturning was 1.47 and against sliding was 1.49. These values remain above the minimum limits required by the applicable standards. Thus, the planned cantilever retaining wall design is deemed suitable for implementation as a slope stability control solution in the Kemiri Village area
Analisis Pengaruh Batu Kapur Puger, Jember sebagai Substitusi Agregat Kelas B Berdasarkan Uji CBR Septiana Dwi Wahyuni; Ilanka Cahya Dewi; Arief Alihudien
Jurnal Rekayasa Infrastruktur HEXAGON Vol 11 No 1 (2026): Edisi Juni
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v11i1.6041

Abstract

The use of local materials as an alternative to road pavement aggregates can be a solution for improving resource efficiency. Limestone, which is abundantly available in Puger Subdistrict, Jember Regency, has the potential to be used as a substitute for Class B aggregate. This study aims to analyze the effect of limestone substitution on the compaction characteristics and California Bearing Ratio (CBR) values of Class B aggregate. The substitution rates used were 0%, 5%, 10%, and 20%. The tests included sieve analysis, the Modified Proctor test, and the soaked California Bearing Ratio (CBR) test. The results showed that all mixture variations still met the gradation specifications for Class B aggregate. However, an increase in the limestone content caused the maximum dry unit weight to decrease from 2.01 g/cm³ to 1.88 g/cm³, while the optimum moisture content increased from 7.27% to 7.57%. The CBR value also decreased from 63.90% in the mixture without substitution to 55.90% at a 20% substitution rate. Regression analysis revealed a strong relationship between the limestone content and the CBR value, with a coefficient of determination (R²) of 0.929. Based on the research results, the use of limestone as a substitute for Class B aggregate is still recommended up to a 10% substitution rate, as it continues to meet the minimum CBR requirements according to the 2025 General Specifications for Road Construction

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