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All Journal Sinergitas Multidisiplin Ilmu Pengetahuan dan Teknologi (SMIPT) Paulus Civil Engineering Journal
Apriyani, Ika
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Journal : Paulus Civil Engineering Journal

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Pengaruh Penambahan Semen dan Variasi Serat Kelapa Pada Tanah Terhadap Uji Kuat Geser Langsung Irviyanti; Wong, Irwan Lie Keng; Apriyani, Ika
Paulus Civil Engineering Journal Vol. 7 No. 2 (2025): Paulus Civil Engineering Journal V7N2 2025
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/25zx4b71

Abstract

Soil stabilization is an effort to strengthen the soil's bearing capacity and shear strength. The aim of this research was to find the physical properties of the soil and the results of stabilization with a mixture of 5% constant cement and a mixture of 5%, 10% and 15% coconut fiber (length ± -10 mm) with direct shear strength testing. Data from tests on the physical properties of the soil that have been carried out in the laboratory, the AASTHO classification shows that the soil belongs to group A-2-7, and the results of the USCS classification of the soil are classified as silty sandy soil (SM). The results of direct shear strength testing in the soil mechanics laboratory showed that the addition of cement and coconut fiber increased the value of cohesion (c), shear angle (Ø), and shear strength (τ). The highest increase was produced in variations of 5% constant cement and 15% coconut fiber, with increased cohesion of 0.166 kg/cm² (point 1) and 0.168 kg/cm² (point 2), shear angles of 32.15° (point 1) and 32.50° (point 2), and shear strength of 0.367 kg/cm² (point 1) 0.371 kg/cm² (point 2). It can be concluded that the addition of cement and coconut fiber can help stabilize the soil at the landslide point.
Pengaruh Penambahan Hebel (Bata Ringan) dan Batu Apung pada Tanah Terhadap Nilai Kompaksi Lola; Irwan; Apriyani, Ika
Paulus Civil Engineering Journal Vol. 7 No. 3 (2025): Paulus Civil Engineering Journal V7N3 2025
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/wjpv2x66

Abstract

Depending on its kind, content, and treatment, soil can have a variety of qualities. Stabilization is therefore required to increase the soil's bearing capacity. The use of supplemental materials like pumice and Hebel (lightweight brick) is one approach to boost the soil's bearing capacity. Hebel is a lightweight, permeable material that helps ease the burden on the soil. The study was conducted in two stages: 1) Evaluating the physical properties of the soil; 2) Compaction test As per the AASHTO classification, the soil falls within the clay soil category (A-7-6). The soil falls within the category of inorganic clay soil with a low to medium degree of flexibility according to the USCS classification. Because lightweight bricks and pumice have a high lime content, which increases the soil's bearing capacity, test results showing their addition to the soil using the standard proctor showed an increase of up to 15% from the original soil.
Co-Authors Alpius Bungin, Erni Rante Desiandhy , Anugrah Pratama Gelong , Yelrian Irviyanti Irwan Julianto, Anugrah Kamba, Charles Lestin, Almiga Kristha Liling, Alfindo Lola Mangontan, Robert Meti Oschar Padallingan Pang’ Raran, Josua Gilang Parrangan, Dedes Sriwinda, Erni Tandira'pak, Seri Tato, Alex Sandria Tondok, Johannes S Wong, Irwan Lie Keng