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All Journal Jurnal Ilmiah MTG Jurnal RISET Geologi dan Pertambangan Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir Journal of Geoscience, Engineering, Environment, and Technology JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) Eksakta : Berkala Ilmiah Bidang MIPA JURNAL TEKNIK HIDRAULIK KURVATEK Ophiolite : Jurnal Geologi Terapan Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil JURNAL TEKNIK GEOLOGI : Jurnal Ilmu Pengetahuan dan Teknologi Indonesian Geotechnical Journal Jurnal Ilmiah Geologi pangea Bulletin of Geology Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Imam Achmad Sadisun
Fakultas Ilmu Dan Teknologi Kebumian, Institut Teknologi Bandung
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Journal : Journal of Geoscience, Engineering, Environment, and Technology

 1 
The Use of Disintegration Ratio in Evaluating Rock Durability in Selected Mudrock Samples in Indonesia Misbahudin Misbahudin; Imam Achmad Sadisun
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 3 (2019): JGEET Vol 04 No 03 : September (2019)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (986.94 KB) | DOI: 10.25299/jgeet.2019.4.3.2331

Abstract

Characterization of durability of mudrocks is important regarding its slaking behaviour within a short time when exposed to and or interact with water. Some relevant cases that occurred due to slaking are damage to roads and slope failures along the Cipularang and Cipali Toll Road. Current engineering activities related to the presence of mudrocks are being and will be held in several locations in Indonesia such as the construction of the Cisumdawu Toll Road in Ujungjaya District, Sumedang and building the National Observatory in Timau District, Kupang. This research is useful for providing engineering considerations related to those activities. The methods used in this research included X-ray diffraction to obtain mineralogy of mudrock, laboratory testing of physical properties of rocks such as dry density, water content, porosity, absorption and mudrocks durability tests. Durability of rocks was determined by disintegration index test. Testing was carried out by wetting and drying of rock samples. Test results showed that the average disintegration ratio of claystones, shales, mudstones and siltstones are 0.1035, 0.2183, 0.4942 and 0.9900. Slaking mode occurs to claystones, mudstones and shales is body slaking while dispersion slaking occurs to siltstones. Evaluation of the durability of mudrocks in this research indicates that siltstones have the highest durability characterized by very slow disintegration, followed by mudstones, shales and claystones at the lowest with very quick disintegration. Disintegration ratio from the disintegration index test characterizes the durability of mudrocks in more details. It can be concluded that porosity and absorption are incorporated into the main factors affecting the durability of mudrocks.
Segmentation of the Active Fault on the Cirebon-Semarang Segments as Revealed by DEM-Derived Geomorphic Indices Jannah, Miftahul; Pamumpuni, Astyka; Sadisun, Imam Achmad
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.15572

Abstract

This research focuses on the segmentation and tectonic activity of the Baribis-Kendeng Fault across the Cirebon to Semarang segments, revealed through the analysis of geomorphic indices derived from Digital Elevation Models (DEM). Utilizing geomorphic indices such as the Hypsometric Integral (HI), Stream Length-Gradient Index (SL), and SL/K ratio, the analysis was conducted on 33 streams crossing ten segments. The results indicate that the landscape in the research area is predominantly in the youthful stage, with HI values ranging from 0.459 to 0.492, indicating active tectonic uplift. Segments such as Ungaran and Pemalang exhibit significant tectonic activity, with high SL/K values, particularly in the Ungaran segment, where the SL/K value reaches 344.872. These findings suggest that fault activity in the region is ongoing, with stronger uplift patterns observed at the western and eastern ends of the fault, while relatively lower activity is found in the central area. This research highlights the ongoin tectonic processes shaping the region’s geomorphology and contributes to a better understanding of the active fault system in Java Island.
Co-Authors Absari, Hirundini Rustica Adrin Tohari Atin Nur Aulia Benyamin Sapiie Cindarto Danang Setiya Raharja Dasapta Erwin Irawan, Dasapta Erwin Dwi Sarah Firdaus El Afghani Hasan Tri Atmojo, S.T., M.T. Heri Syaeful Heri Syaeful Herlambang Fredomeseliano, Bonanza Hideki Shimada I Wayan Sengara Indra Andra Dinata Ipranta Ipranta, Ipranta Kartiko, Rendy Dwi Kurniawan Lilik Eko Widodo Masri Masri Masyhur Irsyam Miftahul Jannah Misbahudin . Misbahudin Misbahudin Misbahudin Misbahudin Moch Hilmi Zaenal Putra Moch Hilmi Zaenal Putra Muhammad Iqbal Hamidi Muhammad Iqbal Hamidi Naufal, Muhammad Adi Nurwijayanti Pamumpuni, Astyka Paulus Pramono Rahardjo Prihadi Soemantidiredja Rendi Dwi Kartiko Rifki Asrul Sani Rizky Satria Putranto Robby Ginanjar Salim, Muhammad Abdul Rahman Septiandi, Muhammad Iqbal Sucipta Sucipta Sucipta Sucipta Sugeng Wahyudi Sukristiyanti Sukristiyanti Tedy Cahya Nusantara Tomohiko Abe Wiwarsono, Fransisko Zhafira, Dzikra