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Analisis Kuat Tekan Beton dengan Penambahan Tras dan Pengembangan Panduan Praktikum Beton Rahmat Saliko; Fadly Achmad; Aryati Alitu
Research Review: Jurnal Ilmiah Multidisiplin Vol. 4 No. 2 (2025): Research Review: Jurnal Ilmiah Multidisiplin (Agustus 2025 - Januari 2026)
Publisher : Transbahasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54923/researchreview.v4i2.296

Abstract

Concrete is a versatile construction material that has had a major impact on global reconstruction. This is because concrete is an important element in the formation of structures, due to its high compressive strength. This study aims to analyze the effect of adding trass to the compressive strength of concrete as a filler. The variations in trass addition were 5%, 10%, 15%, and 20%. In addition, this study also produced a product in the form of a practical guide for concrete construction based on fillers. The method used was laboratory testing with a concrete compression testing machine to determine the strength characteristics of each percentage Concrete mix. The materials used include cement, coarse aggregate, fine aggregate, from PT. HPP HARMONIS Telaga Biru, and the trass used is Lompoto'o trass, Central Suwawa. The testing was carried out at the Civil Engineering Laboratory of Gorontalo State University. The results of the study showed that concrete with 0% trass had a strength of 25.93 MPa, 5% trass had a strength of 27.51 MPa, 10% trass had a strength of 24.37 MPa, 15% trass had a strength of 22.55 MPa, and 20% trass had a strength of 21.48 MPa. The conclusion is that the addition of trass will increase the strength of concrete at a certain percentage, and the effect of using trass in concrete as an additive causes an increase in the volume weight of concrete. In addition, the validity results of the developed guidelines showed a value of 83.4%, which falls into the good category, so it can be said to be effective in supporting concrete practical activities or concrete with trass additives.
Kajian Variasi Waktu Rendaman terhadap Penuaan Asphalt Concrete-Wearing Course(AC-WC)menggunakan Aspal Iran: Study of Variation of Immersion Time on Aging of Asphalt Concrete-Wearing Course (AC-WC) Using Iranian Asphalt Zulkifli Podungge; Frice L. Desei; Fadly Achmad
Jurnal Manajemen Aset Infrastruktur & Fasilitas Vol 6 No 1 (2022): Jurnal Manajemen Aset Infrastruktur & Fasilitas
Publisher : Departemen Teknik Sipil ITS

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

Abstract

Tujuan dari penelitian ini adalah menganalisis sejauh mana durabilitas (keawetan) campuran AC-WC menggunakan agregat lokal quary Longalo dengan bahan pengikat aspal Iran ditinjau dari spesifikasi umum 2018 revisi 2. Parameter keawetan campuran AC-WC dilihat dari Indeks Kekuatan Sisa (IKS), Indeks Durabilitas Pertama (IDP), dan Indeks Durabilitas Kedua (IDK). Penelitian ini dilaksanakan di laboratorium dengan benda uji yang direndam selama 0,5; 24; 48; 72; 96 dan 144 jam dalam waterbath. Berdasarkan hasil penelitian campuran AC-WC, nilai IKS adalah 96,66%, nilai IDP adalah 0,14% dan nilai IDK adalah 1,70%. Campuran AC-WC menggunakan aspal Iran tahan terhadap kerusakan akibat temperatur.
Analisis Rembesan Pada Tubuh Bendungan Bulango Ulu Menggunakan Software Slide 6.0 Nurul Nasira Alimu; Indriati Martha Patuti; Fadly Achmad
Indonesian Journal of Fundamental Sciences Vol 12, No 1 (2026)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ijfs.v12i1.88579

Abstract

Abstract. Setiap bendungan akan mengalami kebocoran atau rembesan, namun kebocoran atau rembesan tersebut tidak boleh melebihi batas rembesan yang diperbolehkan. Berdasarkan hal tersebut, maka perlu dilakukan analisis rembesan pada bendungan dengan mencari debit rembesan serta faktor keamanan piping. Lokasi pembangunan Bendungan Bulango Ulu terletak di Desa Tulo’a, Kecamatan Bulango Utara, Kabupaten Bone Bolango. Analisis rembesan dilakukan dengan menggunakan Software Slide 6.0. Berdasarkan hasil analisis rembesan pada berbagai kondisi muka air, yaitu Muka Air Normal (MAN), Muka Air Banjir (MAB), Muka Air Minimum (MAM), serta kondisi rapid drawdown, diperoleh debit sebesar 1,34 l/s, 1,57 l/s, 0,95 l/s, dan 1,39 l/s. Seluruh nilai debit rembesan yang diperoleh masih jauh lebih kecil dibandingkan debit izin sebesar 1% inflow, yaitu 177,80 l/s dan 0,05% tampungan waduk yaitu 486,69 l/s. Adapun faktor keamanan piping pada masing-masing kondisi tersebut yaitu 4,22, 3,16, 4,68, dan 3,63. Dengan demikian bendungan dinyatakan aman dari bahaya piping (FK ≥ 3 atau 4) Keywords: Rembesan, Bendungan Bulango Ulu, Slide 6.0, Metode Casagrande, Faktor Keamanan Piping.
ANALISIS KAPASITAS DUKUNG TIANG PANCANG DENGAN VARIASI DIAMETER METODE MEYERHOF DAN REESE & WRIGHT BERDASARKAN DATA STANDARD PENETRATION TEST Saphira Rofilah Mokoginta; Indriati Martha Patuti; Fadly Achmad
Composite Journal Vol. 6 No. 2 (2026): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/cj.v6i2.227

Abstract

Fondasi tiang pancang digunakan untuk meneruskan beban struktur ke lapisan tanah yang memiliki daya dukung memadai. Pada tanah endapan danau, variasi diameter tiang menjadi salah satu faktor yang mempengaruhi kapasitas dukung fondasi. Penelitian ini bertujuan menganalisis pengaruh variasi diameter terhadap kapasitas dukung tiang pancang serta membandingkan hasil metode Meyerhof dan Reese & Wright berdasarkan data Standard Penetration Test (SPT).Analisis dilakukan pada tiang pancang beton tunggal dengan diameter 0,5 m dan 0,6 m menggunakan data SPT yang telah dikoreksi. Perhitungan meliputi tahanan ujung, tahanan gesek selimut, kapasitas dukung ultimit, dan kapasitas dukung izin pada berbagai kedalaman.Hasil penelitian menunjukkan bahwa peningkatan diameter tiang meningkatkan kapasitas dukung pada kedua metode. Pada kedalaman optimum 24 m, kapasitas dukung izin metode Meyerhof meningkat dari 472,34 kN menjadi 760,50 kN atau sebesar 61,0%, sedangkan metode Reese & Wright meningkat dari 826,52 kN menjadi 1.053,73 kN atau sebesar 27,5%. Kedalaman 24 m merupakan kedalaman yang paling efektif karena telah mencapai lapisan tanah dengan nilai SPT yang lebih tinggi. Hasil penelitian menunjukkan bahwa diameter tiang dan kondisi lapisan tanah berpengaruh signifikan terhadap kapasitas dukung fondasi. Temuan ini dapat menjadi acuan dalam penentuan dimensi dan kedalaman fondasi tiang pancang yang efisien pada tanah endapan danau.
PENENTUAN KERUSAKAN PERKERASAN KAKU MENGGUNAKAN PAVEMENT CONDITION INDEX DI JALAN TRANS SULAWESI RUAS ISIMU-PAGUYAMAN Mohamad Alief Pratama Hadju; Frice Lahmudin Desei; Fadly Achmad
Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Vol. 12 No. 2 (2026)
Publisher : Himpunan Pengembangan Jalan Indonesia (HPJI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/jhpji.v12i2.10728.101-108

Abstract

Abstract The Isimu-Paguyaman section of the Trans-Sulawesi Road, located in Bilato District, Gorontalo Regency, is part of the national road network connecting Gorontalo Province with Central Sulawesi Province. This section utilizes rigid pavement. With increasing service age and high traffic volumes, the pavement has sustained various types of damage that affect road user comfort and safety. This study aims to evaluate the existing condition of the observed road damage and determine appropriate maintenance strategies for this section of the Trans-Sulawesi Road. The Pavement Condition Index (PCI) method was employed to assess the road's con-dition. The study results indicate that the observed pavement is in excellent condition; therefore, the recommen-ded maintenance strategy is routine maintenance. Keywords: national road; rigid pavement; Pavement Condition Index; routine maintenance Abstrak Jalan Trans Sulawesi Isimu-Paguyaman, yang terletak di Kecamatan Bilato, Kabupaten Gorontalo, merupakan bagian jaringan jalan nasional yang menghubungkan antara Provinsi Gorontalo dengan Provinsi Sulawesi Tengah. Jenis perkerasan jalan yang digunakan pada ruas ini adalah jenis perkerasan kaku. Seiring dengan bertambahnya umur layanan dan tingginya volume lalu lintas, perkerasan mengalami berbagai jenis kerusakan yang berpengaruh terhadap kenyamanan dan keselamatan pengguna jalan. Studi ini bertujuan untuk menge-valuasi kondisi eksisting kerusakan jalan yang diamati, serta menentukan strategi penanganan kerusakan pada ruas Jalan Trans Sulawesi tersebut. Metode yang dipakai untuk menilai kondisi kerusakan jalan pada studi ini adalah metode Pavement Condition Index. Hasil studi ini menunjukkan bahwa kondisi perkerasan jalan yang diamati berada pada sangat baik. Dengan demikian, strategi penanganan yang direkomendasikan adalah pemeliharaan rutin. Kata-kata kunci: jalan nasional; perkerasan kaku; Pavement Condition Index; pemeliharaan rutin
Kajian Laboratorium Laju Resapan Prime Coat Aspal Emulsi Anionik pada Lapis Fondasi Atas Dwi Putri Tiara Madjegu; Fadly Achmad; Frice Lahmudin Desei
Research Review: Jurnal Ilmiah Multidisiplin Vol. 5 No. 2 (2026): Research Review: Jurnal Ilmiah Multidisiplin (Agustus 2026 - Januari 2027)
Publisher : Transbahasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54923/researchreview.v5i2.413

Abstract

This study aims to analyze the infiltration rate of anionic emulsion asphalt used as a prime coat on Class A aggregate base course and to evaluate its compliance with the 2018 Bina Marga General Specifications Revision II. A laboratory experimental method was employed using transparent acrylic cube containers to observe asphalt penetration into the aggregate base over a 48-hour period. Two types of anionic emulsion asphalt, SS-1h and SS-2h, were tested under controlled observation throughout the testing period. The results showed that SS-1h exhibited better infiltration performance than SS-2h, reaching an average penetration depth of 1.47 inches (3.74 cm), with the penetration rate beginning to stabilize after the fourth hour. Nevertheless, the residual asphalt measured after 48 hours was 0.78 l/m² for SS-1h and 0.85 l/m² for SS-2h, both exceeding the specified range of 0.22–0.72 l/m². These findings indicate that although SS-1h provides greater penetration, neither emulsion fully satisfies the residual asphalt requirement. The infiltration process is affected by emulsion breaking, which produces solid bitumen particles that progressively block aggregate pores and restrict fluid movement. This resistance interacts with capillary action, surface tension, and asphalt viscosity, while ambient temperature further influences the infiltration behavior during laboratory testing under study conditions.
Tinjauan Geometrik Jalan Berdasarkan Pedoman Geometrik Jalan 2021 (Studi Kasus: Ruas Jalan Gorontalo-Biluhu Barat STA. 3+300-6+200) Muhammad Zulfikar Djuniadi; Frice Lahmudin Desei; Fadly Achmad
Research Review: Jurnal Ilmiah Multidisiplin Vol. 5 No. 2 (2026): Research Review: Jurnal Ilmiah Multidisiplin (Agustus 2026 - Januari 2027)
Publisher : Transbahasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54923/researchreview.v5i2.564

Abstract

The Gorontalo–Biluhu Barat road section is located in Gorontalo Regency and passes through mountainous terrain with a winding alignment, which may increase the risk of accidents and affect road user safety. This study aims to evaluate the geometric design of the road section based on the 2021 Road Geometric Design Guidelines. The evaluation focuses on three main parameters: horizontal alignment, vertical alignment, and sight distance. The horizontal alignment was assessed based on the characteristics of the curves and their compliance with the specified geometric design criteria. The vertical alignment was evaluated based on the longitudinal grades at each observation station, while sight distance was analyzed according to the applicable geometric design requirements. The results indicate that all horizontal alignment elements within the evaluated road section comply with the established design criteria. However, several stations in the vertical alignment were found to have longitudinal grades exceeding the maximum allowable limit of 10%. Meanwhile, all evaluated sight distance parameters comply with the requirements of the 2021 Road Geometric Design Guidelines. These findings indicate that improvements are particularly needed in sections with excessive grades to enhance overall road safety.