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All Journal Journal of Infrastructure and Facility Asset Management
Maulana, Mahendra Andiek
Civil Engineering Department, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Library & Information Science Mathematics Transportation

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Correlation of Initial Soil Density and Maximum Soil Density Under Drying-Wetting Cycles and Their Soil Erodibility Evriana, Tia; Satrya, Trihanyndio Rendy; Maulana, Mahendra Andiek; Winurseto, Wahyu Supriyo
Journal of Infrastructure & Facility Asset Management Vol 6 (2024): Special Issue 2 : Journal of Infrastructure & Facility Asset Management
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v6i0.19993

Abstract

The Serang - Panimbang Toll Road plan area of Banten province in regional stratigraphy from the starting station to the end consists of sedimentary rock sediments of the Bojongmanik Formation in the form of sandstone intersections with clayey limestone inserts that have been precipitated by the products of Karang volcano consisting of breccia and lava. This volcanic material exhibits a coarse soil texture, high water absorption capacity, and susceptibility to erosion. Soil erosion levels can be determined by measuring soil erodibility. Erosion often occurs in Indonesia because Indonesia has a tropical climate which has two seasons, the rainy and dry seasons. This climatic pattern contributes to the soil vulnerability to erosion, impacting its density. Therefore, it is important to know the effect of drying-wetting cycle on erodibility along the slope of Serang-Panimbang Toll Road. Soil samples will be modeled under two density variations: initial density and maximum density. Drying-wetting tests will determine the physical, mechanical, suction, and erodibility properties of soil. The results showed that there was an increase in the degree of saturation of 8.31% for the initial density soil and 17.12% for the maximum density soil.  Unconfined compressive strength of the soil with initial density and maximum density also decreased in consistency which decreased from very stiff and stiff to very soft. However, erodibility values for both density conditions remained constant at 0.19 despite the drying-wetting cycles and is classified as low.
Excavation Slopes Stability Analysis with Cracked Soil in the Construction of the Serang – Panimbang Toll Road (STA 54+625) Under Maximum Rainfall Condition Purnamayoga, Wahyu; Saputra, Trihanyndio Rendy; Maulana, Mahendra Andiek; Winurseto, Wahyu Supriyo
Journal of Infrastructure & Facility Asset Management Vol 6 (2024): Special Issue 2 : Journal of Infrastructure & Facility Asset Management
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v6i0.19992

Abstract

Construction of the Serang-Panimbang toll road requires deep excavation in several places finishing grade which then forms a roadside slope. Slope stability analysis is very critical in slope design so that infrastructure assets can be managed and maintained. The surrounding infrastructure may sustain damage if the slope is unstable. Rainfall is one of the most important triggers for landslide occurrence. In general, the effects of precipitation infiltration on slopes can cause changes in soil suction and positive pore water pressure, increase soil unit weight, and decrease soil shear strength. If cracked soil is found, the process of rain infiltration will be accelerated. It starts with small cracks and then turns into deep cracks, indicating the possibility of landslides, and the longer the landslide surface becomes, the more the slope will slide. This research discusses the effects of cracked soil and precipitation on slope stability. A slope stability analysis was performed using the Finite Element Method (FEM) and the cracked soil was modelled as a thin weak layer. The results showed that the safety factor decreased from 1,891 in the initial condition to 1,471 (before rain) and 1,441 (after rain) in the worst conditions.
Co-Authors Evriana, Tia Purnamayoga, Wahyu Saputra, Trihanyndio Rendy Satrya, Trihanyndio Rendy Winurseto, Wahyu Supriyo Winurseto, Wahyu Supriyo