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All Journal Media Ilmiah Teknik Sipil Jurnal Hutan Tropika Jurnal Teknik Silitek
Diharyo
Program Studi Teknik Lingkungan Universitas Muhammadiyah Palangkaraya
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture

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Investigasi Kualitas Tanah pada Pembangunan Kelapa Sawit PT. Tunas Harapan Baru: Soil Quality Investigation for Palm Oil Plantation Development at PT. Tunas Harapan Baru Diharyo, Diharyo; Santoso, Achmad Imam; Lesmana, Rudy Yoga
HUTAN TROPIKA Vol 19 No 2 (2024): Volume 19 Nomor 2 Tahun 2024
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v19i2.15854

Abstract

This study aims to evaluate the soil conditions of the land used for palm oil plantation development at PT. Tunas Harapan Baru. The evaluation was conducted by analyzing the physical and chemical properties of the soil, including texture, pH, organic matter content, and key nutrients. Data were obtained from laboratory tests on several soil samples from the location. The results showed that the soil conditions are suitable for palm oil plantation development, although some parameters require attention in sustainable land management. This article also discusses the environmental impact of land use for plantations on local soil conditions and provides recommendations for improving soil quality.
Analisis Bottom Ash Limbah Batu Bara PLTU Pulang Pisau Sebagai Agregat Halus Pada Campuran Beton: Analysis Of Bottom Ash From Pulang Pisau Coal Plant Waste As Fine Aggregate For Concrete Mixture Diharyo Diharyo; Norseta Ajie Saputra; Ignatius Delon; Naswa Nabila; Priska Priska; Sabila Ika Cahyani; Meliyana Anita; Octafiana Indah Rohani; Prenki Prenki
Media Ilmiah Teknik Sipil Vol. 14 No. 1 (2026): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v14i1.11991

Abstract

Bottom ash is a solid waste product of coal combustion at coal-fired power plants (PLTU), the volume of which continues to increase in line with growing energy demand. One potential use of bottom ash is as a substitute for fine aggregate in concrete mixes, thereby reducing the use of natural sand and minimizing the environmental impact of waste disposal. This study aimed to analyze the physical characteristics of bottom ash from the Pulang Pisau PLTU and evaluate its compliance with SNI 1969-2008 and SNI 1970-2008 testing requirements. The research phases included bottom ash sampling, physical characteristic testing (gradation analysis, specific gravity, water absorption value, and silt content), and subsequent evaluation against standard characteristics in accordance with SNI 1969-2008 and SNI 1970-2008. The results showed that the bottom ash from the Pulang Pisau PLTU had a fine, irregular gradation, a specific gravity lower than natural sand, and high porosity, potentially affecting the water absorption rate of the concrete. Overall, the bottom ash from the Pulang Pisau PLTU (Coal-fired Power Plant) is deemed suitable for use as an alternative to fine aggregate in concrete mixes. This utilization not only supports the reduction of natural aggregate use but also provides a more sustainable solution for industrial waste management.
ANALISIS DAYA DUKUNG TANAH PONDASI TIANG PANCANG BERDASARKAN UJI SONDIR Diharyo; Rudy Yogi Lesmana; Achmad Imam Santoso
Jurnal Teknik SILITEK Vol. 4 No. 02 (2024)
Publisher : Fakultas Teknik Universitas Pasifik Morotai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51135/gfg8n192

Abstract

Daya dukung tanah merupakan fungsi dari berat satuan tanah, kekuatan geser tanah, dan dimensi pondasi. Untuk menentukan nilai daya dukung tanah, perlu dilakukan penyelidikan tanah untuk mengetahui lapisan tanah yang memenuhi syarat daya dukung. Pengujian di lapangan dengan melakukan pengujian sondir juga dapat dilakukan untuk mengetahui daya dukung tanah. Penelitian ini bertujuan untuk mendapatkan gambaran yang jelas mengenai daya dukung tanah sebagai dasar perhitungan pondasi, daya dukung tanah adalah kemampuan tanah untuk menahan beban bangunan tanpa mengalami penurunan berlebihan. Pengujian lapangan dilakukan dengan dua metode utama, yaitu Test Boring dan Standard Penetration Test (SPT) serta uji laboratorium untuk menganalisis sifat fisik dan mekanis tanah. Dari hasil pengujian pada kedalaman 15 - 22 meter didapat kepadatan tanah keras/Hard dengan jenis tanah lempung kelanauan kepasiran, Pondasi yang digunakan pondasi dalam (Deep Foundations) yaitu pondasi tiang pancang atau (Bore Pile) dengan ukuran 40 cm x 40 cm atau pondasi Bore Pile dengan ukuran dia. 50 cm.
Co-Authors Achmad Imam Santoso Ignatius Delon Meliyana Anita Naswa Nabila Norseta Ajie Saputra Octafiana Indah Rohani Prenki Prenki Priska Priska Rudy Yoga Lesmana Rudy Yogi Lesmana Sabila Ika Cahyani