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SURVEY KAPASITAS TEKNIS STRUKTUR DERMAGA PELABUHAN LAMPIA Paotonan, Chairul; Caronge, Muhammad Akbar; Azwar, Ahmad
Riset Sains dan Teknologi Kelautan Volume 2, Nomor 1, Tahun 2019
Publisher : Departemen Teknik Kelautan Fakultas Teknik Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/sensistek.v2i1.13307

Abstract

Lampia Port is planned to be used by PT Sinergi Perkebunan Nusantara to ship its CPO (Crude Palm Oil). Before the plan is realized, it is necessary to conduct a study to determine the technical capacity of the pier structure. Therefore, in this study, a survey of the technical capacity of the pier was conducted to identify the condition of the existing pier structure. The survey includes measurements of the layout and dimensions of the pier structure, hummer test and carbonation test as well as visual observations. Based on the results of measuring the layout and dimensions of the pier, it was found that the shape of the pier is T-type consisting of a trestle with a length and width of 42.5 m and 6.0 m respectively and a pier with a length and width of 80.0 m and 10.0 m respectively. The number of piles for the trestle is 22 piles while for the pier is 64 piles. The pile diameter for trestle and pier is 508.3 mm. The hammer test results show that the concrete compressive strength of the pier structure ranges from K300-K400 which still meets the concrete requirements for the marine environment of K300. The carbonation test results show that the carbonation value is greater than 2.0 cm, so it is necessary to repair the concrete surface at least as deep as the carbonated area or as thick as the reinforcement concrete blanket. Visual observations show that the pier structure has not shifted but the beam and pile cap structures have experienced corrosion and carbonation.
Bimbingan Teknis dan Pendalaman Materi Berbasis Coaching Clinic dalam Penyusunan RAB Sesuai PERMEN Bidang Bina Marga, Cipta Karya, dan Sumber Daya Air Se-Kabupaten Maros Nur, Sitti Hijraini; Pongmada, Silman; Caronge, Muhammad Akbar; K, Riswal; Abdurrahman, Muh. Asad; Amiruddin, A. Arwin; Adisasmita, Sakti Adji; Umar, Hasdinar; Ishak, Rahmi Amin
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 6 No 2 (2023): Let us Collaborate for Community Issues
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v6i2.446

Abstract

The National Community Empowerment Program's village and sub-district officials who oversee development financing must execute Technical Guidance in the context of creating a Draft Cost Budget for the construction of Highways, Civil Works, and Water Resources. To help the Construction Development Institute teach and provide technical advised to all village fund managers so they can stay on task and prevent the misuse of state financial management, academics are needed. The purpose of this activity is to provide understanding to village and sub-district officials so that they prioritize planning activities, budget calculations, material needs to implementation in accordance with quality standards and good accountability. All officials throughout Maros Regency are invited to attend or send their envoys as Technical Guidance participants. Subsequently, a coaching clinic method was implemented, wherein the Construction Cost Estimate (RAB) was prepared in an intense manner to maximize training outcomes right away. This method allows us to directly examine participants' comprehension of AHSP and RAB compilation, as well as directly rectify the way participants begin calculating. From the post-test results, data on the understanding of village staff on AHSP has reached 73% and understanding in preparing the RAB has exceeded 60%. Keywords: Technical Guidance, National Community Empowerment Program's, AHSP, RAB compilation, coaching clinic.
Ketahanan Korosi Baja Tulangan dalam Beton menggunakan Palm Oil Fuel Ash (POFA) dan Air Laut Dasar, Amry; Patah, Dahlia; Sainuddin, Sainuddin; Caronge, Muhammad Akbar
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 29, Nomor 2, DESEMBER 2023
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v29i2.55191

Abstract

POFA (palm oil fuel ash) and seawater have the possible to be used in concrete as an effort to reduce construction costs and environmental waste problems. POFA contains pozzolanic properties such as those contained in cement so it has the possible to be used as a mineral in concrete mixtures. Therefore, the use of POFA and seawater in concrete mixtures have the potential to be implemented, but it is obligatory to pay awareness to the potential for corrosion that also follows. This study aims to evaluate the use of POFA up to 20% as a replacement for cement and the effect of mixing seawater on the strength and corrosion of reinforcing bar in concrete. The compressive strength of concrete was evaluated by carrying out a compressive test on a cylindrical specimen with 100 mm in diameter and 200 mm in height at 7 days and 28 days of age. Furthermore, a concrete cylinder specimen with a diameter of 10 mm reinforcement was used to evaluate the potential for corrosion. Measurement of corrosion estimation using the half-cell potential (HCP) method based on ASTM C876-15. Test results show the use of up to 10% POFA to replace cement by mixing seawater and treated with fresh water has a high strength that is almost the same as normal concrete. The risk of corrosion is also not detected and proven by actual measurements of corrosion. Furthermore, HCP values more negative than -400 mV are predicted to experience corrosion in the reinforcement area above 10%.
Mortar Berkelanjutan dengan S325-Pofa: Studi Workability, Kuat Tekan, dan Potensi Pengurangan Emisi Satriani, S; Tjaronge, Muhammad Wihardi; Caronge, Muhammad Akbar
Prosiding Seminar Nasional Teknik Sipil UMS 2025: Prosiding Seminar Nasional Teknik Sipil UMS
Publisher : Universitas Muhammadiyah Surakarta

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

Abstract

Penelitian ini bertujuan untuk mengevaluasi kinerja mortar berkelanjutan yang menggunakan Screened Palm Oil Fuel Ash Passing Sieve No. 325 (S325-POFA) sebagai bahan substitusi sebagian semen. POFA diperoleh dari limbah pembakaran tandan kosong kelapa sawit dan disaring menggunakan saringan No. 325 untuk memperoleh fraksi halus. Variasi campuran dibuat dengan kadar substitusi 0%, 10% dan 20% terhadap berat semen. Uji laboratorium meliputi pengujian workability (flow table), kuat tekan pada umur 7 dan 28 hari, serta analisis estimasi emisi karbon berdasarkan kandungan material. Hasil menunjukkan bahwa penambahan S325-POFA hingga 20% dapat menurunkan workability dan menurukan kekuatan tekan sebesar 4,64% pada variasi 10% S325-POFA dan 8,21% pada variasi 20%. Selain itu, penggunaan S325-POFA berkontribusi terhadap penurunan emisi karbon mortar hingga 19,516% pada 20% S325-POFA, tergantung pada kadar substitusi. Penelitian ini menunjukkan bahwa S325-POFA berpotensi sebagai bahan tambahan semen yang ramah lingkungan untuk mendukung konstruksi berkelanjutan.
Peningkatan Kualitas Hidup dan Resiliensi Masyarakat Bontoa Melalui Sosialisasi Rumah Layak Huni, Sehat dan Tahan Gempa ., Fakhruddin; Parung, Herman; Tjaronge, Wihardi; Djamaluddin, Rudy; Irmawaty, Rita; Caronge, Muhammad Akbar; Bakri, Bambang; Mushar, Pratiwi; Harusi, Nurul Masyiah Rani
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 1 (2025): Community Empowerment through Higher Education Community Service Programs
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i1.576

Abstract

Permasalahan kualitas hunian di Desa Pajukukan, Kecamatan Bontoa, Kabupaten Maros, Sulawesi Selatan, menjadi isu krusial yang memerlukan perhatian segera karena banyaknya rumah tidak layak huni dengan konstruksi lemah, sanitasi buruk, dan ventilasi tidak memadai. Kondisi ini tidak hanya membahayakan kesehatan dan keselamatan penghuni, tetapi juga meningkatkan risiko kerusakan dan korban saat terjadi bencana, seperti banjir dan gempa bumi. Kegiatan ini bertujuan untuk meningkatkan pemahaman masyarakat tentang pentingnya rumah layak huni, sehat, dan tahan gempa melalui sosialisasi yang melibatkan metode ceramah, demonstrasi, dan diskusi kelompok. Subjek kegiatan terdiri dari 25 peserta yang mencakup perwakilan keluarga dan pemangku kepentingan di Kecamatan Bontoa. Observasi dilakukan untuk mengukur pemahaman awal dan akhir peserta serta efektivitas sosialisasi dalam menyampaikan informasi terkait teknik pembangunan rumah aman, pemilihan bahan bangunan lokal, dan perawatan berkala. Hasil kegiatan menunjukkan peningkatan signifikan dalam pemahaman peserta, dengan skor pre-test sebesar 40% yang meningkat menjadi 82% pada post-test. Hal ini mengindikasikan bahwa peserta memiliki pemahaman yang baik mengenai prinsip dasar konstruksi rumah tahan gempa serta pentingnya ventilasi dan sanitasi yang optimal. Dampak positif lainnya adalah munculnya inisiatif dari beberapa peserta untuk memperbaiki rumah mereka dengan menerapkan prinsip-prinsip yang diajarkan. Selain meningkatkan kesadaran, kegiatan ini juga mendorong pemanfaatan bahan bangunan lokal sebagai langkah untuk mendukung ekonomi masyarakat setempat. Dengan pendekatan edukasi dan pemanfaatan sumber daya lokal, kegiatan ini diharapkan memberikan dampak berkelanjutan dalam upaya menciptakan hunian yang lebih layak, sehat, dan tahan gempa, serta meningkatkan kualitas hidup masyarakat di daerah rawan bencana.
Durability performances of ferronickel slag aggregate and seawater concrete Sandra, Nevy; Caronge, Muhammad Akbar; Sunaryati, Jati; Kawaai, Keiyu; Nsama, Willick; Arbi, Yaumal; Arifin, Ari Syaiful Rahman
Teknomekanik Vol. 8 No. 1 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v8i1.34572

Abstract

The rising demand for concrete in the building sector has resulted in the exhaustion of natural sand and freshwater supplies, leading to the pursuit of sustainable substitutes. Coastal areas have plentiful ferronickel slag (SL) and seawater (SW), which can be used to manufacture concrete. Nevertheless, the possibility of corrosion to steel reinforcement raises concerns that require further research. This investigation examines the mechanical and durability performance of concrete that incorporates SL as a partial replacement for fine aggregate and SW as a mixing component. The objective is to optimize SL content to improve compressive strength, resistance to chloride ions, and overall durability. Experimental results show that replacing 25% of the aggregate with SL yields the best combination of workability, strength, and durability, significantly enhancing compressive strength, decreasing porosity, and lessening chloride ion penetration, as evidenced by the Rapid Chloride Penetration Test (RCPT). Although seawater promotes early-age hydration and strength development, its extended use slightly diminishes compressive strength due to salt-induced micro-cracking. However, SL counters these effects, making SW–SL mixture a feasible and sustainable option for concrete production in coastal and resource-limited areas. A significant relationship between RCPT and compressive strength underscores the important role of SL in densifying the matrix and improving impermeability. The concrete mixture with 25% SL exhibits the lowest abrasion weight loss at 28 and 120 days, showing improved durability. This study highlights the potential of using SL and seawater to create eco-friendly and high-performance concrete for harsh environments.