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All Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Rekayasa Sipil dan Desain Journal of the Civil Engineering Forum Borneo Engineering : Jurnal Teknik Sipil Journal of Civil Engineering and Planning (JCEP) Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Jurnal Teknik Sipil
Syah, Aminudin
Universitas Lampung
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Engineering Environmental Science Health Professions Medicine & Pharmacology Transportation Other

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Kombinasi Metode Kontrol dan Perkuatan untuk Penanganan Longsor (Studi Kasus: Longsor Waikerap, Tanggamus, Lampung) Aminudin Syah; Ilham Dani; Sandri Erfani
Borneo Engineering : Jurnal Teknik Sipil Volume 4 Nomor 2 Tahun 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v4i2.1627

Abstract

Landslides often cause heavy casualties and material losses in Tanggamus Regency. These incidentscontinue to be repeated so that it still requires a landslides risk reduction. Landslides risk mitigation begins with a field survey and soil investigation, followed by analyzing the investigation results and planning the potential mass movements. The results from the geological survey show that the study area has a lithology of constituents in the form of andesite and landslide material in the form of volcanic breaks with a high level of weathering so as to form a thick layer of soil. The basic landslide handling design plan in Pekon Waykerap is to perform the geometry arrangement of the slopes so itprovides a strengthened structure with gabion slopes. The slope design results give the slope height limited to 5 meters, a 1H:1V slope gradient, and 2.5 meter bench. The slope surface is suggested to be covered with a patch of grass and equipped with surface drainage. The slope stability analysis results for Pekon Waykerap landslides using the limit equilibrium method shows that using the combination of control and retrofitting method and increases the static safety factor from 1.092 to 1.298 and the dynamic safety factor from 0.846 to 1.031, which means the groundmass movement risk decreases.
Analisis Potensi Kerentanan dan Risiko Bencana di Wilayah Kabupaten Tanggamus Revi Melianita; Andius Dasa Putra; Aminudin Syah
Jurnal Rekayasa Sipil dan Desain Vol 9, No 3 (2021): Edisi September 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Tanggamus merupakan salah satu Kabupaten di Provinsi Lampung yang memiliki banyak wilayah berpotensi tinggi terhadap terjadinya bencana alam seperti gempa bumi, tsunami, tanah longsor, banjir dan bahaya gunung api, baik yang disebabkan oleh fenomena geologi maupun oleh iklim. Kejadian bencana alam seringkali menimbulkan korban jiwa dan kerugian material yang besar sehingga perlu dilakukan kajian pengurangan risiko terhadap bencana. Dalam penelitian ini dilakukan delineasi wilayah-wilayah yang memiliki tingkat ancaman, kerentanan, kapasitas dan resiko bencana alam seperti tanah longsor, banjir dan gempa bumi yang dibagi menjadi 3 klasifikasi kelas yaitu rendah, sedang dan tinggi. Hasil analisis yang diperoleh dari delineasi pembuatan peta risiko bencana tanah longsor menunjukkan bahwa wilayah yang termasuk dalam klasifikasi kelas rendah seluas 187.364,82 ha, kelas sedang 71.454,95 ha dan kelas tinggi 26.726,24 ha, untuk bencana banjir kelas rendah 220.592,08 ha, kelas sedang 34.404,94 ha dan kelas tinggi 30.548,99 ha serta gempa bumi kelas rendah 92.341,21 ha, kelas sedang 112.376,12 ha dan kelas tinggi 80.828,67 ha. Wilayah yang memiliki tingkat ancaman bencana tinggi, perlu diantisipasi dan diminimalkan risiko akibat bencana, sehingga perencanaan dan penyusunan pembangunan tata ruang serta wilayah sangat diperhitungkan terutama daerah dengan tingkat kerentanan yang tinggi terhadap bencana. Kata kunci : Ancaman, Kerentanan, Kapasitas dan Risiko Bencana.
Hubungan Sifat Sifat Fisik Tanah Yang Dicampur Dengan Kapur Terhadap Stabilitas Tanah Lempung Pada Tanggul S. Tantri Handayani Idrus; I Iswan; Aminudin Syah
Jurnal Rekayasa Sipil dan Desain Vol 9, No 2 (2021): Edisi Juni 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

In embankment planning, it is necessary to consider the influencing factors such as the materialfor making the embankment, slope stability, guard height, slope protection, the width of theembankment, the slope and dumping facilities. Some areas in Indonesia do not have good qualitysoil. For instance, the soil in Palembapang Village, Kalianda, South Lampung. Regarding theissues, soil maintenance is mandatory to be done to increase the physical parameters of the soil sothat the carrying capacity of the soil is maintained. The results shows that at the mixture rate of0%, 4%, 8%, 12% and 16%, the lime is classified as CL (clay low plasticity)which indicates nonorganicclay with low to medium plasticity. The lab testing result of the sample of natural soilshows cohesion value of 0,1813 kg/cm2 and shear angle value of 20o. After stabilizing processwas done using additives, the cohesion value and shear angle value were significantly increasing.It proves that lime can increase soil density as both value increased. In the natural soil sample,the value of the safety factor was still below the safe limit. Another lime additive was added to thesoil sample with lime addition of 16%. None of the safety factor limits were below average afterthe process. In conclusion, lime additive can decrease the plasticity (liquid limit and plasticityindex), enhancing strength and durability, reducing water absorption and soil development aswell as strengthening the stability of the embankment.
Hubungan Pengujian Cbr Metode Tumbukan Dengan Alat Uji Cbr Metode Tekanan Berdasarkan Uji Pemadatan Standard Devrisvansyah Irwan; Andius Dasa Putra; Aminudin Syah; Iswan Iswan
Jurnal Rekayasa Sipil dan Desain Vol 9, No 3 (2021): Edisi September 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

The importance of soil as construction material needs to be considered carefully. With various soil conditions, a physical test is required to discover the characteristics of the soil and California Bearing Ratio (CBR) test in a laboratory to determine the bearing capacity of the basic land (subgrade). This research was conducted to assess the suitability of the CBR test value with two different compaction tools.The results of the CBR test with the collision method without immersion resulted in the design CBR value of 7.7% and the CBR value of the immersion sample of 3.6%. Meanwhile, the CBR test using a pressure modification device, the CBR values obtained in the samples not immersed at a pressure of 3 MPa, 6 MPa, 9 MPa, and 12 MPa, were 4.2%, 6.8%, 9.8%, and 11.4%. The CBR valuesfor the immersion samples were 2.95%, 4.2%, 4.45%, and 4.56%. The results obtained from the design CBR value of the pressure method with a pressure of 6MPa which is closest to the collision CBR value with a difference of 0.9% for no immersion and 0.6% for immersion. The assumption that the difference between the two methods is due to the compaction energy of 6 MPa strength is not the same as the energy produced from the use of hammer energy according to ASTM D 698, Test Method for Laboratory Compaction Characteristics.
Hubungan Sifat-Sifat Fisik Tanah dan Aktivitas Tanah Terhadap Nilai Koefisien Permeabilitas Yang Dipengaruhi Campuran Semen Berdasarkan Uji Laboratorium S. Indira Adhi Ariana; Iswan Iswan; Aminudin Syah
Jurnal Rekayasa Sipil dan Desain Vol 9, No 2 (2021): Edisi Juni 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Soil is the materials that has a very important role to support the construction on it. Soil permeability value for every construction is different. Such differences affect the strength of a civil construction to be built. The problem that is caused by settlement as seen in Palembapang, Umbul Ligoh, the soil is soft in the rainy season and its bearing capacity becomes low, so it makes a lot of construction problems. Therefore it is necessary to attempt to manipulate the soil permeability value by adding cement as an additive ingredients with the percentage of 0%, 4%, 8% and 12% to a soil permeability values obtained in order to meet the standard of civil construction to be built. Cement has very fine particles so that it can fill the soil pores and has a function as a strong binder. In testing physical properties, the soil includes the classification of A-7-6 soil or poorly categorized soil types.Due to cement addition into soft clay, compaction with the standard proctor experienced a decrease the optimum moisture content (OMC) and an increase in the weight of maximum dry volume, then in the permeability test, the permeability coefficient decreased 2,52%. The composition of the cement mixture affects the value of soil permeability. The lower permeability value follows the amount of cement mixture on the soil. The most change on permeability coefficient was recorded by the sample mixed with 12% of cement.
Analisis Nilai Indeks Kerawanan Bencana Kabupaten Lampung Barat Nabila H; Andius D Putra; Aminudin Syah
Jurnal Rekayasa Sipil dan Desain Vol 9, No 3 (2021): Edisi September 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Lampung Barat merupakan suatu kawasan atau wilayah yang memiliki potensi bencana alam yang cukup besar. Berdasarkan data yang diperoleh dari BPBD Provinsi Lampung diketahui bahwa Kabupaten Lampung Barat merupakan wilayah dengan jumlah kejadian bencana terbanyak. Penelitian ini bertujuan untuk memetakan potensi ancaman, kerentanan, dan risiko bencana alam. Data penelitian ini diperoleh dari kuesioner, Dinas Kesehatan, BPBD, dan BPS Kabupaten Lampung Barat. Berdasarkan pengolahan data yang telah dilakukan, maka tingkat ancaman gempa bumi yang diperoleh termasuk dalam kriteria kelas rendah (58,94%), sedang (21,54%), dan tinggi (19,5%). Tingkat ancaman longsor dalam kriteria kelas rendah (57,09%), sedang (19,79%), dan tinggi (21,52%). Tingkat ancaman banjir yang termasuk dalam kriteria kelas rendah adalah (7,76%), sedang (12,29%), dan tinggi (19,18%). Sedangkan tingkat risiko bencana gempa yang termasuk dalam kriteria kelas rendah adalah (11,7%), sedang (54,2%), dan tinggi (29%). Tingkat risiko longsor termasuk dalam kelas rendah (11%), sedang (38%), dan tinggi (35%). Tingkat risiko banjir termasuk dalam kriteria kelas rendah (34%), sedang (42%), dan tinggi (15%). Disimpulkan bahwa Kabupaten Lampung Barat perlu meningkatkan kualitas infrastruktur dan pemeliharaan dari potensi risiko bencana.
KORELASI NILAI DDT PADA TANAH LEMPUNG DAERAH LAMPUNG SELATAN YANG TELAH DI SWELLING MENGGUNAKAN ABU KELAPA SAWIT TERHADAP TEBAL PERKERASAN JALAN RAYA martha vepti dhina; iswan iswan; aminudin syah
Jurnal Rekayasa Sipil dan Desain Vol 8, No 2 (2020): Edisi Juni 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Kerusakan jalan raya terjadi akibat pengembangan pada tanah dasar (Subgrade) masih cukup tinggi, sehingga dibutuhkan stabilisasi. Tujuan penelitian ini untuk mengetahui nilai DDT tanah lempung yang telah di swelling menggunakan abu kelapa sawit untuk tebal perkerasan jalan raya.Pengujian laboratorium yang dilakukan adalah uji indeks properties, pemadatan, uji CBR dan swelling. Uji CBR dilakukan pada sampel tanah asli dan yang telah dicampur dengan abu kelapa sawit dengan kadar campuran 6%, 8% dan 10% dengan pemeraman selama 4, 7 dan 10 hari. Uji CBR yang dilakukan adalah CBR Soaked dan Unsoaked.Tanah dari Desa Marga Kaya Lampung Selatan berdasarkan klasifikasi USCS berupa CL atau lempung tak organic dengan plastisitas rendah, sedangkan klasifikasi AASTHO yaitu kelompok A-7-6 tergolong tanah berlempung. Nilai CBR Unsoaked optimum terjadi pada campuran kadar abu 8% dengan pemeraman 7 hari sebesar 19,3%. Nilai CBR Soaked optimum pada campuran abu 8% dengan nilai  2,2%. Ketebalan perkerasan jalan pada CBR Soaked efisien pada campuran abu kelapa sawit 8% dengan ketebalan D1 = 7,5 cm, D2 = 25 cm dan D3 = 40 cm. Nilai swelling optimum pada campuran abu kelapa sawit 10% yaitu sebesar 2,86% termasuk ke dalam potensi pengembangan rendah. Nilai DDT dipengaruhi oleh nilai CBR semakin besar nilai CBR maka DDT akan semakin meningkat.Kata Kunci: Stabilisasi, Abu Kelapa Sawit, California Bearing Ratio, Swelling,  DDT, Tebal Perkerasan Jalan.
Pengaruh Suhu Pemeraman terhadap Kinerja Fly Ash untuk Tanah Lempung Lunak Septriza Auli; Andius Dasa Putra; Aminudin Syah; Iswan Iswan
Jurnal Rekayasa Sipil dan Desain Vol 9, No 3 (2021): Edisi September 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

One of the construction problems that is often encountered in the world, including Indonesia, is the construction of highways carried out on soft soil subgrade. In general, the improvement of soft subgrade is carried out with special modifications or handling, one of which is by stabilization so the subgrade can be used based on the standards. The use of fly ash as a stabilization material is considered an effective option because of its economical price and the elements in it have the ability to harden and increase strength when reacting with water. This study aims to find out the improvement of soft soil quality that has been mixed with several variations of fly ash seen from parameters such as Atterberg Limits and CBR. By reviewing the highest temperature conditions that ever happened in Indonesia based on Badan Meteorologi dan Geofisika (BMKG) and relating it with temperature conditions in the field, the study also reviewed the influence of high temperatures of 40°C on these parameters. The results are a decrease in the maximum dry density and an increase in the optimum moisture content. In addition, the value of the Atterberg Limit decreased significantly. The largest CBR value is shown in the addition rate of fly ash by 10% with a 7-day curing time at a temperature >40°C.Keywords: soft soil, soil stabilization, fly ash, high curing temperature, CBR
Perubahan Nilai Daya Dukung Tanah Lempung Lunak Akibat Stabilisasi Tanah menggunkaan Metode Deep Soil Mixing Pola Panels dengan Kapur 8% Salsabila Atalia Sadil; Iswan Iswan; Aminudin Syah
Jurnal Rekayasa Sipil dan Desain Vol 9, No 2 (2021): Edisi Juni 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Palembapang, South Lampung requires proper road construction for public transportation needs. However, the road conditions in the village were found heavily damaged because of poor soil conditions. Therefore, soil stabilization must be carried out. The method of this study is deep soil mixing (DSM), which is soil improvement method by mixing additional materials in the field (in-site). This method is more affordable because they use their soil as theiraggregate and reduce the transportation budget because of stuff supply.The purpose of this study is to determine the change of soil load-bearing capacity due to the variation of distance and the diameter of the DSM stabilization column on soft clay soil and soft clay soil with 8% lime. This study shows that the stabilization of soft clay soil with 8% lime has increased its load-bearing capacity (qu) from 10.368 kg/cm2to 14.69 kg/cm2. The increase of soil load-bearing capacity with the stabilization of the DSM column is proportional to the volume of soil improvement. The largest increase of the soil load-bearing capacity occurred in 1D columns range and 3.75 cm diameter. The distance variation also gives a more significant change compared to the variation of diameter. The most efficient distance and diameter are at the variation of the distance of 1.25D columns range and 2.5 cm diameter.
Perilaku deformasi batuan lapuk ditinjau dari uji 1-D compression slaking test Ibnu Abi Laila; Andius Dasa Putra; Aminudin Syah
Jurnal Rekayasa Sipil dan Desain Vol 8, No 3 (2020): Edisi September 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Tujuan penelitian ini adalah mengetahui perilaku deformasi akibat crushing dan slaking melalui uji 1-D Compression Slaking Test terhadap batuan lapuk. Slaking merupakan keadaan tanah atau batuan yang tidak dapat mempertahankan konsistensinya akibat adanya gangguan air.  Penelitian ini dilakukan pada sampel batuan lapuk melalui pengujian 1-D Compression Slaking Test dan pengujian X-Ray Diffraction (XRD) untuk mengetahui mineral yang terkandung pada setiap batuan. Uji 1-D Compression Slaking Test dilakukan pada tekanan sebesar 9,8; 19,6; 39,2; 78,5; 157; 314 kPa. Hasil pengujian 1-D Compression Slaking Test didapatkan perilaku deformasi yang diakibatkan crushing(∆e1) optimum terjadi pada batuan Bukit Kemuning sebesar 0,510 dan perilaku deformasi yang diakibatkan slaking(∆e2) optimum terjadi pada batuan Pemancar sebesar 0,483.
Co-Authors Ahmad Zakaria Ahmad Zakaria Ahmad Zakaria Andius D Putra Andius D. Putra Andius Dasa Putra Andius Dasa Putra Andius Dasa Putra Badruzzaman Aji Carissa, Caroline Clara Devrisvansyah Irwan Erfani, Sandri Faris, Fikri Fikri Alami Fikri Alami Firman Syahruli Fitri Indah Sari Halsa Dinar Pangestu Hayu Nurfaidah I Iswan Ibnu Abi Laila Ilham Dani Ilham Dani Indriyawati, Agapetalia Iswan Iswan Iswan Iswan Iswan Iswan Lusmeilia Afriani Lusmeilia Afriani M Irvani Azis Mareli Telaumbanua martha vepti dhina Muhammad Desyan Ichsani Muhammad Nur Kholiq Nabila H Nanda Dwi Wahyuni Nandi Haerudin Pulung Karo-Karo Putri, Silfa Nayyira Restu Ningsih Revi Melianita S. Indira Adhi Ariana S. Tantri Handayani Idrus Salsabila Atalia Sadil Septriza Auli Telaumbanua, Syukur Teuku Faisal Fathani