Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Potensi : Jurnal Sipil Politeknik
Geni Firuliadhim, Geni
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Engineering Transportation

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
STUDI EKSPERIMENTASI KEKUATAN TARIK PONDASI TIANG ALAS LEBAR Firuliadhim, Geni
Potensi : Jurnal Sipil Politeknik Vol 18, No 1 (2016): Potensi: Jurnal Sipil Politeknik
Publisher : Potensi : Jurnal Sipil Politeknik

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

Abstract

Kekuatan tarik pondasi tiang alas lebar sangat dipengaruhi oleh 3 faktor: gayagravitasi, kuat tarik/geser tanah, dan kuat hisap (suction).  Suction cenderung bekerja ketika pondasi ditarik pada tanah yang lembab dan atau pondasi yang dalam. Kandungan kohesi cdan sudut geser dalam () akan mempengaruhi bentuk keruntuhan tanah pondasi. Untuk tanah yang memiliki c besar dan  yang kecil bentuk dinding runtuh cenderung linier dan sebaliknya c kecil dan  yang besar bentuk dinding runtuh cenderung lengkung (parabolik) kearah permukaan tanah. Bentuk alas pondasi sedikit mempengaruhi bentuk keruntuhan di permukaan tanah. Makin dalam alasnya, bentuk runtuh di permukaan tanah makin tidak dipengaruhi bentuk alas pondasi. Umumnya bentuk runtuh permukaan adalah melingkar/lingkaran. Suction pada tanah pondasi dapat dimodelkan dengan piston dalam bejana prismatis yang menghisap zat cair dalam pipa S. Kontribusi gaya hisap rata-rata terhadap kapasitas tarik sistem pondasi dalam adalah 5%. Untuk rasio kedalaman-lebar alas D/B<5 nampak dengan jelas bahwa alas pondasi berbentuk bujur sangkar permukaan atas konus mempunyai kapasitas tarik terbesar dibandingkan dengan bentuk yang lain, dengan perbedaan 15-20%. Peningkatan rasio D/B satu satuan akan meningkatkan kapasitas tarik pondasi 20-30%. Pondasi tarik akan runtuh rata-rata pada rasio displacement-kedalaman pondasi sekitar 3%. Untuk keperluan disain maka asumsi keruntuhan tarik merupakan pilihan terbaik. Kontribusi berat konus tanah terhadap kapasitas tarik sistem pondasi dalam skala lapangan mencapai 60 %. Makin dalam pondasi maka makin besar radius runtuh di permukaan tanah. Radius runtuh ditemukan hingga 6 kali diameter alas pondasi untuk D/B < 5 dan hingga 9 kali diameter alas pondasi untuk 5 <D/B < 8, dimana D = kedalaman dan B = lebar alas pondasi.
Evaluation of Soil Stabilization from Marble Ash Powder and Asphalt Emulsion as Supporting Soil for Logistics Buildings Simanjuntak, Meita; Amalia, Putty Maura; Firuliadhim, Geni; 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%.
Expansive Soil Stabilization Using Lime and Bottom Ash to Increase the CBR Value: A Case of Cililin Soil Setiawan, Ahmad Fauzi; Rahadian, Erlangga; Firuliadhim, Geni; Wintoro, Bayu
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.
Co-Authors Amalia, Putty Maura Rahadian, Erlangga Setiawan, Ahmad Fauzi Simanjuntak, Meita Syahril Syahril Wintoro, Bayu