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All Journal Fondasi: Jurnal Teknik Sipil Civil Engineering For Community Development
Kusuma, Rama Indera
Jurusan Teknik Sipil UNTIRTA
Civil Engineering, Building, Construction & Architecture Transportation

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Soil Stabilization Using Slag Cement for Improved CBR Performance: A Study in Lebak Regency, Banten Fathonah, Woelandari; Kusuma, Rama Indera; Mina, Enden; Negoro, Giant Muhammad Satrio; Abdurohim, Abdurohim
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.22039

Abstract

The site of Kukulu Village, Parungsari Village, Sajira District, Lebak Regency, Banten was examined in this study. The Dynamic Cone Penetrometer test indicated that the soil carrying capacity value in this location was rather low, at 3.8%. It is crucial to remember that excellent subgrade soil (basic soil) has to have a CBR value of at least 6%. The use of slag cement is good for stabilizing soil because it contains silica and is cementitious. Slag cement is an environmentally friendly material, therefore in this study slag cement was used. The Unified Soil Classification System (USCS) will be used in this study to define the soil type and classification. The soil's grain size, Atterberg limits, compaction, and laboratory CBR tests will all be examined in order to achieve this. The CBR value will be calculated for a period of time and at different percentages of 0%, 8%, 10%, and 12% before and after stabilization using slag cement. In previous research, it was carried out and obtained an optimum CBR value when adding 10% slag cement and experienced a decrease when adding 15% slag cement, so in this study we wanted to find out whether there was still an increase in the CBR value in the range of 10% to 15%. The results of the CBR test obtained the highest CBR value of 23% from the addition of 12% cement slag and 7 days of curing.
Landslide Hazard Mapping in Cilegon With Geographic Information System (GIS) Mina, Enden; Kusuma, Rama Indera; Fathonah, Woelandari; Rafabi, Muhammad Iqbal Beckham
Jurnal Fondasi Vol 13, No 1 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i1.24870

Abstract

Natural disasters are disasters caused by events caused by nature. One of the natural disasters that continues to lurk in society is landslides. Landslides are the process of ground movement in an inclined or vertical direction from its original position as a result of gravity. Disaster Risk Assessment is an integrated mechanism to provide a comprehensive picture of a region's disaster risk by analyzing the Danger of Natural Disaster, Threat Level, Loss Level and Regional Capacity of dealing with threats of natural disaster. Geographic Information System (GIS) is a computer-based system used to store and display geographic information. GIS systems are designed for collecting, storing and analyzing geographic data at a location. Cilegon is a municipality in Banten Province, Indonesia. Cilegon is at the northwestern tip of the island of Java, on the edge of the Sunda Strait, with an area of 16.259 hectares, with a population of 450,271 people.
Stabilization of Swamp Soil Using Steel Slag, Fly Ash, and Glass Bottle Powder To Determine Unconfined Compressive Strength Test (UCS) Value (Study Case on Kp. Tegal Wangi Street No.62, Rw. Arum, Sub-district Gerogol, Cilegon City, Banten) Kusuma, Rama Indera; Mina, Enden; Fathonah, Woelandari; Handayani, Putri Nurmala
Jurnal Fondasi Vol 13, No 1 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i1.24838

Abstract

Soil is an important part of construction which function as a support for the building above. Swamp soil has a soft texture and high water content, making it difficult for the soil support construction on it. The purpose of this study is to determine the soil classification based on Unified Soil Classification System (USCS) and to determine the soil characteristic by adding supplemental materials at varying percentages: 20% steel slag, 20% fly ash, and 0%, 5%, 10%, and 15% glass bottle powder, with curing periods of 0, 7, 14, and 28 days. The research findings indicated that the soil, according to the USCS classification system, falls into the OH soil classification, indicating pure clay, with a plasticity index value of 26.79%. With the addition of steel slag, fly ash, and glass bottle powder, there was a reduction in the plasticity index from 26.79% to 9.22% in variation E (20% steel slag, 20% fly ash, and 15% glass bottle powder) after a curing period of 28 days. The highest qu value was recorded in variation D (20% steel slag, 20% fly ash, and 10% glass bottle powder) after 28 days of curing, measuring 4.587 kg/cm2.
Pemberdayaan Masyarakat melalui Pelatihan Pembuatan Paving Block dari Limbah Fly Ash di Desa Lontar Kabupaten Tangerang Fathonah, Woelandari; Mina, Enden; Kusuma, Rama Indera; Darwis, Zulmahdi; Soelarso, Soelarso; Baehaki, Baehaki; Nurjanah, Ina Asha; Rahma, Midia; Radityagifari, Muhamad
Civil Engineering for Community Development (CECD) Vol 3, No 2 (2024): Edisi Oktober 2024
Publisher : Department of Civil Engineering Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/cecd.v3i2.29114

Abstract

Limbah fly ash dari Pembangkit Listrik Tenaga Uap (PLTU) Lontar, Serang, Banten, merupakan sisa pembakaran batu bara yang berpotensi mencemari lingkungan jika tidak dikelola dengan baik. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memanfaatkan limbah tersebut melalui pelatihan pembuatan paving block bagi warga Desa Lontar. Metode yang digunakan dalam pelatihan meliputi pemberian teori dan praktik langsung mengenai persiapan bahan baku, pencampuran material, teknik pencetakan, serta pengeringan paving block. Pelatihan juga menekankan pentingnya keselamatan kerja dan pengelolaan lingkungan selama proses produksi. Hasil dari kegiatan ini menunjukkan peningkatan keterampilan warga dalam memanfaatkan fly ash menjadi paving block yang bernilai ekonomis. Beberapa peserta berencana mengembangkan produksi ini secara mandiri, baik untuk memenuhi kebutuhan desa maupun untuk dijual ke pasar yang lebih luas. Kegiatan ini diharapkan dapat meningkatkan kesejahteraan ekonomi masyarakat sekaligus mengurangi dampak negatif limbah industri terhadap lingkungan.
The Effect of Fly Ash-Based Geopolymer Proportion on the Specific Gravity of Mixed Soil Fathonah, Woelandari; Kusuma, Rama Indera; Mina, Enden; Baehaki, Baehaki; Rizka, Bella
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.28256

Abstract

Road construction planning must consider the characteristics and strength of the soil. This study aims to determine the classification of soil and the effect of fly ash-based geopolymer as an added material on the specific gravity of soil. Specific gravity testing was carried out using a pycnometer to obtain the specific gravity of the soil. The test object used is a soil sample added with geopolymer with fly ash as raw material and an alkaline activator (Na2SiO3and NaOH). The NaOH concentration is 10 M with a solution ratio of 2.0 (Na2SiO3 to NaOH), fly ash content of 20%, and variations in S / L (fly ash to activator) levels of 1/2 and 1/2.5. Based on the research that has been done, the results show that the soil used in the study is included in the organic clay soil with a specific gravity value of 2.49. The effect of fly ash-based geopolymer in this study increases the specific gravity value, with a specific gravity of 2.60 for variation B (80% soil, 20% FA, S/L 1/2) so that the soil falls into the organic clay category and 2.69 for variation C (80% soil, 20% FA, S/L 1/2.5) so that the soil falls into the non-organic clay category.
Co-Authors Abdurohim, Abdurohim Baehaki, Baehaki Darwis, Zulmahdi Fathonah, Woelandari Fathonah, Woelandari Handayani, Putri Nurmala Mina, Enden Negoro, Giant Muhammad Satrio Nurjanah, Ina Asha Radityagifari, Muhamad Rafabi, Muhammad Iqbal Beckham Rahma, Midia Rizka, Bella Soelarso, Soelarso