Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal Potensi : Jurnal Sipil Politeknik Publikasi Riset Orientasi Teknik Sipil (Proteksi)
Kumala sari, Putu tantri
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 
Pengaruh Retak dan Pelapukan Tanah Terhadap Potensi Kelongsoran Saat Hujan Dengan Uji ERT, IP dan Pemodelan Numerik: The Effect of Cracks and Soil Weathering on Landslide Potential During Rain with ERT, IP and Numerical Modeling Tests Kumala sari, Putu tantri; Wardani, Mila Kusuma
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 6 No 2 (2024): Vol. 6 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/proteksi.v6n2.p228-233

Abstract

Landslides occurred in the hilly area of ​​Tulakan-Pacitan, East Java. The landslide location is right under the supplies electricity tower to the Java and Bali. The landslide occurred during the rainy season that the intensity reached 1000 mm/month and the maximum was 300 mm/day. Geotechnical observations and geophysical observations, Electrical Resistivity Tomography (ERT) and Induced Polarization (IP) have been carried out. Geotechnical testing stated that the soil conditions in the hilly area around the landslide tended to be good. The results of the ERT and IP tests showed that there were layers weathering and cracks in the landslide area. The weathered and cracked soil conditions were not captured in geotechnical tests. This study was conducted to determine the causes of landslides, in hilly areas with predominantly good soil but experiencing weathering and cracks. Numerical modeling based on limit equilibrium (LEM) and finite element (FEM) was carried out by modeling the presence of soil weathering and cracks. The results of this study indicate that the presence of soil cracks and weathering can reduce slope stability, especially during heavy rain. The number of cracks and the seepage parameter in weathered soil can also affect the stability of a slope, causing landslides.
The Impact of Cracked Soil and Weathering on Slope Stability Against Landslides in Hilly Regions with Heavy Rainfall Kumala sari, Putu tantri; Wardani, Mila K.
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.v26i2.6359

Abstract

Landslides are frequent events occurring in hilly regions of Pacitan-Indonesia, specifically beneath High Voltage Air Line (SUTT) tower. These events occur during the rainy season, with a monthly and daily intensity of 1,000 mm and 300 mm, respectively. Therefore, this study aims to identify the causes of landslides in hilly regions with good soil conditions influenced by weathering and cracks. The field observations of geotechnical and geophysical were carried out including Electrical Resistivity Tomography (ERT) and Induced Polarization (IP). The results of geotechnical testing showed that soil conditions were generally stiff, while ERT and IP tests indicated a layer with weathering and cracks. Numerical modeling was also performed using limit equilibrium and finite element methods to simulate the impact of soil weathering and cracks. The results showed that the presence of cracks and weathering in soil at landslide location could significantly reduce slope stability, particularly during heavy rainfall. Additionally, the number of cracks and seepage parameter values in weathered soil influenced slope stability, potentially leading to landslides.
The Influence of Buton Tailing and Expanded Polystyrene (EPS) on The Shear Strength of Sandy Soil Amalia, Dewi; Gulo, Elrich Gratiawan WD; Hendry, Hendry; Kumala sari, Putu tantri; Lhwaint, Abdallh
Potensi: Jurnal Sipil Politeknik Vol. 27 No. 1 (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.v27i1.6415

Abstract

Buton tailings, which are a by-product of Buton asphalt, have not been optimally utilized. In fact, research shows that Buton tailings have the potential as an additive to improve soil characteristics, especially sandy soil. This study aims to analyze the effect of the addition of Buton tailings and Expanded Polystyrene (EPS) on the shear strength of sandy soil. The sandy soil used came from Padalarang, Indonesia. Tests were conducted by adding Buton tailings at 0%, 2.5%, 5%, 7.5%, 10%, and 12.5% of the soil weight, and EPS at 0.15%, 0.3%, and 0.45%. The results showed that the addition of Buton tailings increased the cohesion and shear angle of sand soil. The most significant increase occurred with the addition of 5% Buton tailings and 0.15% EPS which increased the inner shear angle by 44% from the initial condition. Based on these results, it can be concluded that the combination of Buton tailings and EPS has the potential to increase the shear strength of sand soil.
Co-Authors Abdallh Lhwaint, Abdallh Chatarina Umbul Wahyuni Dewi Amalia Gulo, Elrich Gratiawan WD Wardani, Mila K. Wardani, Mila Kusuma