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All Journal International Journal of Advances in Applied Sciences BERKALA FISIKA GRADIEN Jurnal Fisika Unand Jurnal Geocelebes Jurnal Pendidikan Fisika dan Teknologi Indonesian Physical Review Inersia : Jurnal Teknik Sipil Jurnal Geosaintek Jurnal Fisika
Halauddin Halauddin
Jurusan Fisika, Fakultas MIPA - Universitas Bengkulu
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Pengukuran Konduktivitas Termal Bata Merah Pejal Halauddin, Halauddin
GRADIEN : Jurnal Ilmiah MIPA Vol 2, No 2 (2006): (Juli 2006)
Publisher : Universitas Bengkulu

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Abstract

Telah dilakukan pengukuran konduktivitas termal (k) dengan metode plat tunggal dari beberapa jenis bata merah pejal yang berasal dari daerah di provinsi Bengkulu diantaranya dari Nakau, Pinang Mas, Blok V, Blok VI, Talang Pauh, Medan Baru dan Pekik Nyaring. Pengukuran ini bertujuan untuk melihat kekuatan bata merah pejal berdasarkan besarnya konduktivitas termalnya. Kekuatan fisik bata merah sangat ditentukan oleh deformasi termal yang berhubungan dengan ukuran rata-rata pori (porous) yang dipengaruhi oleh distribusi ukuran partikel, bentuk partikel dan struktur tanah dan jenis tanah serta komposisi bahan pengisi pada saat dilakukan proses pemanasan (pematangan). Hasil penelitian menunjukkan bahwa harga konduktivitas termal masing-masing sampel batu merahpejal memberikan kontribusi yang berbeda, namun hasilnya tidak memberikan perbedaan angka yang signifikan. Batumerah pejal yang mempunyai harga konduktivitas termal yang paling tinggi adalah batu merah yang berasal daridaerah Nakau dengan k = 0,380 (J s-1 m-1 K-1), sedangkan batu merah pejal yang mempunyai harga konduktivitas termal yang paling rendah adalah batu merah yang berasal dari daerah Pekik Nyaring dengan konduktivitas termal k = 0,150 (J s-1 m-1 K-1).   
Penentuan bilangan performan pompa kalor berdasarkan perbedaan temperatur Halauddin, Halauddin
GRADIEN : Jurnal Ilmiah MIPA Vol 1, No 1 (2005): (Januari 2005)
Publisher : Universitas Bengkulu

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Abstract

Bilangan performan pompa panas adalah bilangan pasti yang menunjukkan bahwa pompa panas berbeda pada temperatur efektif atau tidak. Bilangan ini penting untuk pompa panas dan juga untuk system refrigenerasi. Penelitian ini dilakukan di laboratorium dengan variable pengamatan; massa air yangdigunakan 4 kg, perubahan beda temperature diantara dua resorvair dengan interval waktu pengamatan 1200 detik (20 menit). Dari data dan hasil pengamatan, diperoleh bilangan performan sekitar 0.18 x 103 sampai 6,2 x 103. Hasil ini sesuai dengan yang diharapkan.
Aplikasi Lattice Gas Automata untuk Mengestimasi Porositas dan Permeabilitas Retakan di Halaman Mesjid Sunda Kelapa Pondok Kelapa Bengkulu Tengah Halauddin, Halauddin
GRADIEN : Jurnal Ilmiah MIPA Vol 8, No 2 (2012): (Juli 2012)
Publisher : Universitas Bengkulu

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Abstract

Penelitian ini bertujuan untuk menentukan porositas (f) dan permeabilitas (k) terbesar dan terkecil dari delapan retakan yang bervariasi di halaman Mesjid Sunda Kelapa Pondok Kelapa Bengkulu Tengah. Perhitungan porositas dan permeabilitas dilakukan dengan menggunakan model Lattice Gas Automata (LGA) yang diimplementasikan dengan bahasa program Delphi 7.0. Dari hasil data perhitungan, diperoleh bahwa retakan yang mempunyai permeabilitas sangat besar diperoleh pada Retakan 1 dengan nilai k = 0,142203880096761 piksel2, dan porositas total untuk Retakan 1 diperoleh sebesar 0,0518810. Sedangkan retakan yang mempunyai permeabilitas sangat kecil diperoleh pada Retakan 6 dengan nilai k=0,0072498776126890 piksel2, dan porositas total untuk Retakan 6 diperoleh sebesar 0,0106255.Simulasi aliran fluida pada saat running data untuk porositas kecil menyebabkan tumbukan aliran fluida model LGA semakin sering terjadi, dengan demikian menyebabkan permeabilitas menurun. Sebaliknya, porositas besar menyebabkan tumbukan aliran fluida model LGA semakin sedikit terjadi, dengan demikian menyebabkan permeabilitas semakin meningkat.
Pemanfaatan Lubang Resapan Biopori (LRB) dan Perhitungan Permeabilitas Untuk Setiap Titik Lubang Resapan di Rawa Makmur Permai Bengkulu Halauddin, Halauddin; Suhendra, Suhendra; Refrizon, Refrizon; Faisal, Fachri
GRADIEN : Jurnal Ilmiah MIPA Vol 12, No 1 (2016): (Januari 2016)
Publisher : Universitas Bengkulu

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Abstract

Penelitian ini bertujuan untuk memanfaatkan metode lubang resapan biopori (LRB) sebagai salah satu bentukmitigasi banjir, peralatan constant head permeameter untuk melihat pada bagian titik mana daerah yang mudah meluluskanfluida dengan melihat tingginya nilai permeabilitas berdasarkan hasil perhitungan serta pengukuran letak posisi geografisdaerah penelitian akan diukur dengan alat GPS jenis Garmin GPSmap 76CSx. di Kelurahan Rawa Permai KotamadyaBengkulu.Berdasarkan nilai permeabilitas hasil pengukuran dari lubang bor biopori untuk 10 titik, dapat diinterpretasi bahwa jenistanah berdasarkan kelulusan fluidanya di daerah pengabdian adalah lanau, pasir kelanauan, dan lempung. Perbedaan nilaipermeabilitas tanah sangat dipengaruhi oleh jenis tanah, karena setiap jenis tanah mempunyai tekstur, struktur, porositas yangberbeda. Sehingga nilai permeabilitas di 10 titik lubang biopori berbeda, didominasi oleh ketiga jenis tanah di atas.Berdasarkan hasil pengukuran GPS, bahwa letak posisi geografis untuk 10 titik lubang biopori berbeda-beda, terutama untukparameter ketinggian (elevation). Semakin tinggi suatu daerah tidak dapat menentukan besarnya kecilnya nilai permeabilitas,karena seperti yang telah dijelaskan di atas bahwa besaran permeabilitas sangat ditentukan oleh jenis tanah yang mempunyaitekstur, struktur, porositas yang berbeda. Akan tetapi, dengan semakin jauh suatu daerah dari permukaan air laut,mengindikasikan daerah tersebut lebih aman dari ancaman bahaya bencana alam banjir. Ketinggian (elevation) di daerahpengabdian berdasarkan hasil bor biopori berkisar mulai dari 8 meter, 10 meter, 16 meter, 17 meter, 22 meter, 23 meter, 24meter, dan 25 meter.
PENGARUH PENAMBAHAN POLIMER EMULSI VINYL ACECATE CO ACRYLIC PADA TANAH LEMPUNG TERHADAP UJI PERMEABILITAS MELALUI CONSTANT HEAD PERMEABILITY TEST Halauddin, Halauddin; Suhendra, Suhendra
BERKALA FISIKA Vol 14, No 2 (2011): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Permeability is rate of movement an fluid in soil through a media  have relation pore micro and macro way, happen of vertical and horizontal. Permeability of soil depend on pore mean size measure influenced by particle size measure distribution, viscosity, particle form and soil structure. Smaller soil particle size measure, smaller also pore size measure and progressively lower ability of the soil to overcome fluid. This research aim to know the level of permeability coefficient value of soil residing in gristle area slide by pass Bengkulu Kepahiang by using method permeameter of permeability head constant by comparing given by permeability value is emulsion polymer and do not give by type emulsion polymer of  poly vinyl acetate co acrylic (PVA). This research have done in laboratory have the character of pure experiment and conducted sometime. From result of research, obtained that: value permeability of biggest soil before given by emulsion polymer of PVA there are at location III equal to 8,62.10-3 cm/s, and value permeability of smallest soil before given by emulsion polymer there are at location I equal to 3,87.10-3 cm/s. While value permeability of biggest soil after given by emulsion polymer of PVA there are at location V equal to 0,96.10-3 cm/s, and value permeability of smallest soil after given by emulsion polymer there are at location IX equal to 0,10.10-3 cm/s.   Keywords: Permeability, constant head permeability, pore of size,  polymer of emulsion and                     poly vinyl acetate co acrylic (PVA).
Litologi Daerah Rawan Banjir Di Desa Batik Nau Dengan Menggunakan Metode Vertical Electric Sounding (VES) Barasa, Habel; Suhendra, Suhendra; Gustan, Nesti Fazeza; Halauddin, Halauddin
Jurnal Fisika Unand Vol 14 No 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.2.117-123.2025

Abstract

This study was conducted to determine the type of rock lithology in Batik Nau village to see its effect on flooding during the rainy season. The study was conducted using the Schlumberger Configuration with the Vertical Electrical Sounding (VES) method at 30 sounding points. VES data collection in this study used the X612-EM MULTI-CHANNEL RESISTIVIMETER. Furthermore, to obtain a 1D log image, Progress 3.0 software was used and then analyzed to be interpreted against the geological map of the research area. The rock porosity value was obtained using the Achi formula using Microsoft Excel software. The results of the interpretation that most of the Batik Nau Village area is dominated by Clay and Napal rocks, both rocks have very low average porosity values ​​so that they are saturated with water. Rock lithology that cannot absorb water perfectly or is in a state of saturation makes this area prone to flooding during the rainy season.
MODEL 3D SEBARAN HIDROTERMAL BERDASARKAN NILAI RESISTIVITAS DI DAERAH GEOWISATA TAMBANG SAWAH, LEBONG BENGKULU Verentina, Sendiya; Suhendra, Suhendra; Refrizon, Refrizon; Gayatriani, Intan; Halauddin, Halauddin
Jurnal Geosaintek Vol. 11 No. 2 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v11i2.2677

Abstract

INVESTIGATION OF THE GEOTHERMAL RESOURCE POTENTIAL USING GEOELECTRICAL METHOD WITH THE WENNER CONFIGURATION: A CASE STUDY IN LEBONG REGENCY, INDONESIA Raihana, Hana; Nazli, Khairun; Suhendra, Suhendra; Refrizon, Refrizon; Halauddin, Halauddin
Indonesian Physical Review Vol. 6 No. 2 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i2.225

Abstract

In geothermal reservoirs, hydrothermal distribution is significant. The most widely utilized geothermal reservoirs to date are those of hydrothermal systems, which are geothermal systems where the reservoir contains steam, water, or a mixture of both, depending on the pressure and temperature of the reservoir. One of geophysical method that is enough to map subsurface conditions to determine the hydrothermal distribution is the 2-Dimensional Geoelectric method using the Wenner configuration. This method aims to study the variation of rock resistivity below the earth's surface, resulting in a two-dimensional profile of the subsurface resistivity model used to describe the layered subsurface resistivity structure. The results are in the form of 2-Dimensional modeling of the distribution of hydrothermal manifestations with data processing using pyGIMLI (Python Library for Inversion and Modeling in Geophysics) software. In the study area  Pungguk Pedaro Village, Bingin Kuning District, Lebong Regency, the Hulusimpang Formation has a high alteration intensity, as evidenced by the weathering in rocks and the micrographic appearance. The types of stones found in this research area include andesite rocks, including sandy gravel, volcanic breccia, tuff, andesite, basalt, basalt-andesite sand, silty sand, and clay. Or rocks derived from acidic magma.
IDENTIFICATION OF HYDROTHERMAL DISTRIBUTIONS USING THE WENNER-SCHLUMBERGER CONFIGURATION GEOELECTRIC METHOD IN LEMEU VILLAGE, LEBONG REGENCY, BENGKULU Kausari, Alfata; Rafly, Tegar Al; Muammar, Zaky; Refrizon, Refrizon; Halauddin, Halauddin; Suhendra, Suhendra; Sahputra, Rio; Raihana, Hana; Rahmat, Andre
Indonesian Physical Review Vol. 7 No. 3 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i3.332

Abstract

The hot spring pool, Lemeu Village, Lebong Regency, is one of the geothermal fields. This research aims to identify the study area's geothermal potential and lithology. This is illustrated by the correlation method of resistivity and electrical conductivity values of rocks based on geoelectric measurements. This research uses the Wenner-Schlumberger configuration geoelectric method, as many as four tracks spread around the hot spring hill with a length of 480 meters, which are used to see variations in resistivity values that can indicate the presence of hydrothermal potential. The result is a 2D Resistivity model processed with Res2DinvX32 software. Based on the interpretation results, the subsurface rock lithology in each track is relatively similar in color, texture, grain size, and composition because it is around the hill. The Hulusimpang formation consists of clay, silty sand, tuff, andesite, basalt, and granite. Hydrothermal is found on lines 2 and 4 with resistivity values of 7.3 and 10.1 Ωm at a depth of 26 meters. Geothermal potential in the research area is divided into several temperature categories; some have low, medium, and high temperatures. In the research area, tracks 1 and 3 have low temperatures.
PENGARUH PENAMBAHAN SEKAM PADI DAN POLIMER EMULSI POLY VINYL ACECATE CO ACRYLIC PADA TANAH LEMPUNG DENGAN OBJEK PENGUJIAN KEKUATAN BATU BATA MENGGUNAKAN METODE UNIAXIAL Halauddin, Halauddin
Inersia: Jurnal Teknik Sipil Vol. 9 No. 1 (2017)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (563.233 KB) | DOI: 10.33369/ijts.9.1.39-46

Abstract

Research on the effect of the addition of rice husk and poly vinyl acetate emulsion polymer co acrylic (PVA) on clay have been conducted to see the strength of brick. Calculation of strength compared to brick by rice husks and polymer emulsion and given rice husk without any emulsion polymer. Provision of rice husk to batter was fixed at 9:1, while the provision of PVA polymer mixture for each batter with varying percentage are 1%-7%. Based on the results of the research, showed that: uniaxial compressive strength test resultsbricks to mix rice husk without PVA emulsion polymer was 28,7kg/cm2(L0), compressive strength test results bricks to mix rice husk with PVA emulsion polymer to a mixture of 1%-7%, respectively: (PVA 1% of 28,7 kg/cm2 (L1);(PVA 2% of 28,7 kg/cm2 (L2); (PVA 3% of 28,7 kg/cm2 (L3); (PVA 4% of 28,7 kg/cm2 (L4); (PVA 5% of 28,7 kg/cm2  (L5); (PVA 6% of 28,7 kg/cm2 (L6); and (PVA 7% of 28,7 kg/cm2 (L7). From the above results show that the compressive strength test results bricks to mix rice husk with PVA emulsion polymer mix increased from 1% to 3% mix, while starting from a mixture of 4% to 7% of the compressive strength of bricks dropped dramatically. The addition of PVA 3% of additions that the most effective way to improve the compressive strength of the bricks with compressive strength reached 53,5 kg/cm2, or increase of 46,4% from a brick with a mixture ofrice husk.
Co-Authors Abimayu, Dadin Mars Al Akbar, M Riski Al Ansory, Andre Rahmat Al Rafly, Tegar Apriana, Yelda Barasa, Habel Bayu Saputra, Bayu Saputra Bimantara Panca Utama, Bimantara Panca Utama Fachri Faisal Fadli, Darmawan Ikhlas Fauzi, M. Wilzam Gayatriani, Intan Gustan, Nesti Fazeza Hasugian, Basdiki Idris, Beni Syakban Jaya, Shara Ashari Prana Jaya Kamila, Nur Husniatin Kausari, Alfata Lizalidiawati Lizalidiawati Muammar, Zaky Muhammad Wilzam Fauzi, Muhammad Wilzam Fauzi Nazli, Khairun Rabbani, M Rifqi Rafly, Tegar Al Rahmat, Andre Rahmawati, Nurul 'Ilmi Raihana, Hana Refrizon Refrizon Rival Zamrawi, Rival Zamrawi Sahputra, Rio Sholeha, Della Zakia Sinaga, Jesika Erni ELfrita Sri Rahayu, Sri Rahayu Suhendra Suhendra Tri Utami, Olga Ulandari, Clora Verentina, Sendiya wahyu, Wahyu cahyadi setiawan