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All Journal PILAR Potensi : Jurnal Sipil Politeknik Borneo Engineering: Jurnal Teknik Sipil
Geni Firuliadhim
Politeknik Negeri Bandung
Civil Engineering, Building, Construction & Architecture Energy Engineering Environmental Science Transportation

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Pengaruh Biopolimer Pada Stabilitas Lereng Swelling soil Dewi Amalia; Bagus Guritno; Hendry Hendry; Geni Firuliadhim
Borneo Engineering : Jurnal Teknik Sipil Volume 5 Nomor 3 Tahun 2021
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v5i3.2099

Abstract

Many studies have begun to develop the concept of cracked soil. The results of research related to cracked soil are able to answer the irregularities that occur, such as the difference in the results of the stability analysis which is considered safe with the conventional bishop method, while the conditions in the field are landslides. Swelling soil is soil that is susceptible to changes in water content. This type of soil is very prone to cracking. To build infrastructure on the swelling soil type, an improvement must be made, one of which is by mixing the swelling soil with biopolymer. The results of this biopolymer mixing are then modeled in the New Slope Stability Analysis Program (NSSAP) 1.0 which refers to the concept of cracked soil. From the analysis, it was found that the slope safety factor before improvement with biopolymer was 0.305 and the safety factor after improvement with biopolymer was 2.006. From the results of this study, it can be seen that the role of biopolymers in stabilizing swelling soil is quite large, which is around 558%.
Analisis Daya Dukung Tiang Bor Dengan Alat Pile Driving Analyzer Test Pada Variasi Diameter Tiang Geni Firuliadhim; Rabiya
Potensi: Jurnal Sipil Politeknik Vol. 21 No. 2 (2019): Potensi: Jurnal Sipil Politeknik
Publisher : Department of Civil Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.617 KB) | DOI: 10.35313/potensi.v21i2.1339

Abstract

Pile driving analyzer test atau disebut juga pengujian tiang dinamik, merupakan alat untuk mengetahui kapasitas daya dukung fondasi tiang pancang maupun fondasi bore pile. Dalam hal ini, penelitian yang dilakukan adalah untuk mengetahui parameter daya dukung pada fondasi bore pile dengan menggunakan alat pile driving analyzer test. Dari hasil pengujian fondasi tiang berukuran 25 cm mencapai titik ultimit daya dukungnya sebesar 28.3 kN atau setara dengan 2885.751 kg dengan beban yang diberikan adalah 63.5 kg. Mutu beton yang digunakan adalah K225 atau setara dengan 225 kg/cm2. Untuk fondasi tiang berukuran 20 cm memiliki nilai daya dukung ultimit sebesar 13 kN atau setara dengan 1325.61 kg dengan beban yang diberikan adalah 63.5 kg. Mutu beton yang digunakan adalah K225 atau setara dengan 225 kg/cm2. Sedangkan fondasi yang berdiameter 15 cm mencapai titik ultimit sebesar 2.5 kN atau setara dengan 254.925 kg dengan beban yang diberikan adalah 63.5 kg. Mutu beton campurannya adalah K225 atau 225 kg/cm2. Sehingga dari hasil tersebut membuktikan bahwa penampang fondasi tiang yang berbeda berpengaruh besar terhadap nilai daya dukung fondasi tiang tersebut.
KARAKTERISTIK CAMPURAN ASPAL POROUS MENGGUNAKAN ASPAL MODIFIKASI CARIPHALTE DAN PENAMBAHAN GILSONITE Geni Firuliadhim; Arief Aszharri
PILAR Vol 18 No 2 (2023): Pilar: September 2023
Publisher : Politeknik Negeri Sriwijaya

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

Abstract

Aspal porus merupakan campuran aspal jalan dengan komposisi agregat yang umumnya menggunakan hampir 90% komposisi agregat kasar. Dengan banyaknya keunggulan aspal porus, maka untuk meningkatkan kestabilan campuran aspal porus diperlukan aspal yang berkualitas tinggi sebagai bahan pengikat agregat. Untuk meningkatkan nilai karakteristiknya digunakan aspal modifikasi shell cariphalte dan penambahan gilsonite. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan skala laboratorium. Pengujian yang dilakukan pada penelitian ini berupa pengujian aspal modifikasi cariphalte sebagai bahan pengikat dan agregat lokal yang terdapat di Bandung, Jawa Barat. Bahan tambah yang digunakan adalah gilsonite dengan variasi 4%, 5%, 6%, 7%, dan 8% yang kemudian digunakan untuk menguji karakteristik Marshall.
Expansive Soil Stabilization Using Lime and Bottom Ash to Increase the CBR Value: A Case of Cililin Soil Ahmad Fauzi Setiawan; Erlangga Rahadian; Geni Firuliadhim; Bayu Wintoro
Potensi: Jurnal Sipil Politeknik Vol. 27 No. 2 (2025): Potensi: Jurnal Sipil Politeknik
Publisher : Department of Civil Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/potensi.v27i2.5179

Abstract

Soil stabilization plays a crucial role in enhancing the bearing capacity of soils to support structural loads, particularly in road construction projects involving soft soils with inherently low strength. This study investigates the feasibility of using bottom ash, a coal industry waste, as a soil stabilizing agent. Utilizing bottom ash not only aims to improve soil mechanical properties but also addresses environmental concerns associated with coal waste disposal. Laboratory tests were conducted to evaluate the index properties (specific gravity, Atterberg limits, and grain size distribution) and engineering properties (compaction characteristics, swelling behavior, and unconfined compressive strength) of soil treated with varying proportions of bottom ash. The results demonstrate that the addition of bottom ash significantly enhances the soil’s bearing capacity and reduces swelling potential, indicating its suitability for application as a subgrade layer in pavement construction. The addition of 13% lime combined with varying percentages of bottom ash significantly improved the soil’s properties, with CBR values increasing to between 11% and 15%, compared to the untreated soil. This study highlights the potential of bottom ash as an effective and sustainable soil stabilizer, contributing to both infrastructure development and industrial waste management.
Evaluation of Soil Stabilization from Marble Ash Powder and Asphalt Emulsion as Supporting Soil for Logistics Buildings Meita Simanjuntak; Putty Maura Amalia; Geni Firuliadhim; Syahril Syahril
Potensi: Jurnal Sipil Politeknik Vol. 26 No. 2 (2024): Potensi: Jurnal Sipil Politeknik
Publisher : Department of Civil Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/potensi.v26i2.6055

Abstract

This research focuses on improving the bearing capacity of soil by applying soil stabilization methods. Specifically, this research explores the use of a mixture of marble powder ash and emulsified asphalt to improve soil physical properties and increase soil bearing capacity to support logistics buildings such as lime or rice storage warehouses. This research was conducted in Cililin area which has soft clay soil that is unsuitable for construction. Tests were conducted in the laboratory using various compositions of marble dust ash (0%; 2.5%; 5%; 7.5%; 10%) and 6% emulsified asphalt. The tests measure the CBR (California Bearing Ratio) and UCS (Unconfined Compressive Strength) values of the soil. The tests measured the CBR (California Bearing Ratio) and UCS (Unconfined Compressive Strength) values of the soil. The test results showed a direct relationship between increasing marble ash composition with CBR and UCS values, with the highest design CBR value in the unsoaked method being 8% and the maximum qu value being 1.676 kg/cm². However, the desired CBR value of >10% was not achieved in this study. To fulfill this requirement, future studies should consider compositions higher than 10% and for better results can use asphalt emulsion of more than 6%.
Co-Authors Ahmad Fauzi Setiawan Arief Aszharri Bagus Guritno Bayu Wintoro Dewi Amalia Erlangga Rahadian Meita Simanjuntak Putty Maura Amalia Rabiya S Syahril Sukamto, Ika Sumiyarsi