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All Journal Jurnal Manajemen Teknologi dan Teknik Sipil (JURMATEKS) Jurnal Pendidikan Indonesia (Japendi) Jurnal Jalan Jembatan
Asih Aryani Soemitro, Ria
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Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Transportation

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ANALISIS LAPISAN BAWAH PERMUKAAN MENGGUNAKAN METODE GROUND PENETRATING RADAR PADA SUBGRADE YANG DIINJEKSI AIR SEMEN Situngkir, Edwin Mehator; Rendy Satria, Trihanyndio; Asih Aryani Soemitro, Ria; Ferdian, Vidi
Jurnal Jalan Jembatan Vol 40 No 2 (2023)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58499/jatan.v40i2.1190

Abstract

Early road damage was caused, among other things, by high daily traffic (ADT), vehicles with excessive dimensions and load (ODOL) passing through, and problematic and soft ground conditions. Subgrade repairs can be carried out to overcome damage by applying the water-cement grouting method. To analyze the state of the subsurface layer after cement water was injected, a field test was carried out using Ground Penetrating Radar (GPR) data acquisition. The results of GPR data analysis on Sta 34+700 and Sta 37+850 on the Tuban–Babat–Lamongan–Gresik national road have shown that on the radargram, the grouting materials rise due to back pressure. The materials cannot penetrate the subgrade layer so that the grouting material spreads over the aggregate layer and comes out through the grouting holes at other points on the asphalt surface. In the radargram, the reflector can be seen as a small, sharp and uniform horizon along the trace to the bottom layer so that there is no change in the condition of the subgrade layer after water cement grouting. From this research, soil improvement using cement water injection in cohesive soil types does not significantly increase soil density because the injected cement water does not enter the soil micropores. Key words: grouting water cement, subsurface layer, subgrade, ground penetrating radar, radargram, reflector
Analisis Pengaruh Infiltrasi Hujan Terhadap Stabilitas Lereng STA 62+450 S/D  62+825 Pada Proyek Jalan Tol Seksi Sp. Indralaya – Prabumulih Dengan Software Geo Studio Oktaliyani, Tiara; Asih Aryani Soemitro, Ria; Rendy Satrya, Trihanyndio
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 7 No. 2 (2024): DECEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v7i2.6561

Abstract

The construction of the Indralaya-Muara Enim Interchange Toll Road, especially the Indralaya-Prabumulih Interchange Section, was hampered by landslides after excavation was carried out between STA 62+450 to 62+825. The combination of steep slopes and rain infiltration weakened the soil structure, increasing the risk of landslidesThis research aims to analyze the effect of rainwater infiltration on slope stability on the Sp Section Toll Road Project. Indralaya–Prabumulih. The research methodology used was to analyze landslide slope areas using the Slope/W and Seep/W programs from Geo Studio. This study evaluated different excavation heights and an initial excavation slope of 1:3. The focus is on calculating the safety factor (SF) at varying rain durations (1 hour, 3 hours, and 5 hours), with SF values ​​below 1.5 indicating instability. The Safety Factor (SF) value of the existing soil before excavation was 1.58, but after 1 hour of rain, the SF decreased to 1.33 (15.66% decrease). After 3 hours, SF dropped to 1.13 (28.34% decrease), and reached 1.10 (30.24% decrease) after 5 hours. Strengthening slopes using the Hydroseeding method increases SF to 1.83, while the use of Retaining Wall increases SF more significantly to 2.54. This research reveals the impact of rain infiltration on soil stability and proves the effectiveness of slope strengthening methods. These results are an important basis for planning effective landslide mitigation on toll road excavations.
Pengaruh Stabilisasi Tanah Menggunakan Abu Terbang Dan Kapur Terhadap Perubahan Karakteristik Fisik, Mekanik, dan Nilai CBR Serta Kadar Karbon dalam Tanah Evan Yesa, Ignatius; Rendy Satrya, Trihanyndio; Asih Aryani Soemitro, Ria
Jurnal Pendidikan Indonesia Vol. 5 No. 12 (2024): Jurnal Pendidikan Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/japendi.v5i12.7227

Abstract

Lapisan tanah dasar (subgrade) pada struktur perkerasan jalan merupakan lapisan yang paling krusial. Subgrade tidak hanya menopang beban jalan raya, namun juga beban akibat lapisan perkerasan di atasnya. Forshyte pada tahun 2014 mencoba memprediksi potensi pemanasan global menggunakan metode Life Cycle Assessment (LCA). Berdasarkan penelitian yang telah dilakukan, maka dapat diambil Kesimpulan Nilai kepadatan optimum untuk tanah yang distabilisasi dengan kapur sebesar 3%, 6%, dan 9% secarat berurutan adalah 1,177 gr/cm3, 1,363 gr/cm3, 1,321 gr/cm3. Selanjutnya kepadatan kering optimum tanah yang distabilisasi dengan kapur sebesar 9% dan abu terbang dengan variasi kadar 5%, 10%, 15%, 20%, dan 25% secara berurutan adalah 1,403 gr/cm3, 1,429 gr/cm3, 1,502 gr/cm3, 1,548 gr/cm3, dan 1,600 gr/cm3, Berdasarkan hasil serangkaian yang telah dilakukan, kadar zat aditif yang paling efektif dalam stabilisasi tanah yang digunakan adalah kapur sebesar 9% dan abu terbang sebesar 25%. Namun, dari hasil pengujian emisi karbon diketahui bahwa campuran tersebut menyebabkan emisi karbon dengan level mematikan, sehingga sebaiknya digunakan campuran kapur sebesar 9% dan abu terbang sebesar 25%.
Co-Authors Evan Yesa, Ignatius Ferdian, Vidi Oktaliyani, Tiara Rendy Satria, Trihanyndio Rendy Satrya, Trihanyndio Situngkir, Edwin Mehator