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Pengaruh Penambahan Trass Dan Abu Kayu Bakar Terhadap Pengujian CBR Dan Permeabilitas Tanah Lempung Andi Azhari Alfarizi; Arman Setiawan; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5095

Abstract

Development in Indonesia continues to develop along with advances in technology, many types of soil have been discovered to improve the quality of clay soil, which is often done through various stabilization techniques. One method that has attracted attention is the addition of Trass and Firewood Ash. Trass, which is a volcanic-based additive, has pozzolanic properties which can improve its carrying capacity, firewood ash as a by-product of wood burning waste. The aim of this research is to find out how much influence the addition of trass and firewood ash has on clay soil. In this research, CBR and Permeability testing was carried out with substitution of 10% trass at variations of 10%, 15% and 20%. And add firewood ash as much as 5%, 10%, 15% and 20%. The CBR and Permeability values have increased successively. The CBR value of the original soil was 13.03%, the soil with a mixture of 5% firewood ash and 10% firewood ash had CBR values of 21.85 and 22.16, while the CBR value with a mixture of trass and firewood ash was 32.96%, 42.67 % and 53.32%. Meanwhile, the permeability value for the original soil is 0.0039%, for soil with variations of 5% firewood ash and 10% firewood ash the permeability value is 0.0048cm/m3 and 0.0057cm/m3, while the permeability value with a mixture of trass and firewood ash is 0 .0066cm/m3, 0.0078cm/m3 and 0.0086cm/m3
Alternatif Perancangan Pondasi Tiang Pancang Sebagai Pengganti Pondasi Tiang Bor Pada Konstruksi Pile Slab Windi Ismail; Arman Setiawan; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5221

Abstract

Pile foundations are widely used in construction, particularly for structures on low-bearing capacity soils or heavy buildings. Driven and bored piles are the most common types. This study explores driven piles as an alternative to bored piles, focusing on foundation strength through bearing capacity comparison. The selected driven pile is a prestressed precast concrete pile, 1 meter in diameter and 14 meters deep. The method involves calculating bearing capacity using the Meyerhoff equation based on N-SPT data, along with analyzing pile reactions and displacement at the supports through displacement analysis. The calculation results show that the carrying capacity of piles with a diameter of 1 m and a depth of 14 m reaches 2861 kN, larger than a drilled pile with a diameter of 0.8 m and a depth of 21 m with a carrying capacity of 1895.1 kN. Based on these results, prestressed spun pile concrete piles were selected with a concrete quality of fc' 50 MPa, a diameter of 1 m, and a total length of 21 m. The selection of this alternative based on the results of the analysis is still within the safe limit so that the foundation is safe to use.
Co-Authors Abduh, M. Natsir Adum, Adum Al Anzari, Dedi Arham Alfarizi, Andi Azhari Alloto'dang, Hizkia Rial Andi Azhari Alfarizi Andi Rumpang Yusuf Anugrah Arif, Muh Panca Zainuddin Asrar Asrar Badrun, Burhanuddin Damayanti, Alilah Saskia Danusaputra, Maraya Eka Yuniarto Erniati Bachtiar Erny Farida Isroani Faris Jumawan, Faris Fatmawati Rachim Febryansah, Febryansah Fitriani, Lisna Annisa Fudlailah, Pratiwi Gunawan, Andi Candra Haris, Zainal Abidin Herlambang, Andy Hijriah, Hijriah Ical Mahenra S Ismail, Windi Jamil Gunawi Jayanti, Nadya Eka Joni, Yafettt Juniarti, Ana Kristina, Desi Kurniawan Lido Lebang, Fauzy Lembang, Michael Tangke Lido, Kurniawan Mahenra S, Ical Mappa, Muh Hijrawansa Mayumi, Emilia Meldawati Artayani Michael Tangke Lembang Muhammad Hunsan Muhammad Ihsan Musahir, Fajar Mustaan, Mustaan Natasia, Icha Nganro, Zasqia Ainun Madjidah Nur, Muhammad Alfian Nurdin, Abdul Rahim Prasetya, Megananda David Puspitasari, Hilda Putu Artawan, I Rahman, Laode Abdul Rahman, Muhammad Junaedy Randan, Yurike Renaldi, Renaldi Z Ridwan Ridwan Ridwan, Ridwan Rino Dwi Laksono Rita Hardianti Aris Ritnawati Makbul Rizaldo Bagus Dinata Ronaldi, Ronaldi Samaa, Rifka Kendek Samma, Yandri Liling Sariman , Syahrul Sariman, Syahrul Setiawan, Asri Mulya Sikanna, Ferdi Sri Gusty Surya, Andika Syahrul Sariman Syahrul Sariman Syahrul, Syahlendra Syariman, Syahrul Thamrin Abduh Wicaksono, Muh. Ramdhan Ainun Windi Ismail Yandri Liling Samma Yudha Alam , Gigih Yunianti, Nur Hadijah Yunus, Ahmad Yauri