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All Journal Pena Teknik : Jurnal Ilmiah Ilmu-ilmu Teknik Jurnal UNITEK
Sukman Sukman
Universitas Nahdlatul Ulama Sulawesi Tenggara
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Use of Nickel Slag Waste as Coarse Aggregate in Concrete Andi Ahdan Amir; Sukman Sukman; Mahmud Mahmud; Hasrudin Hasrudin
PENA TEKNIK: Jurnal Ilmiah Ilmu-Ilmu Teknik VOLUME 7 NUMBER 2 SEPTEMBER 2022
Publisher : Faculty of Engineering, Andi Djemma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51557/pt_jiit.v7i2.1270

Abstract

Indonesia is the largest nickel producer in the world. but from another aspect, the problem of ex-mining pits, combustion ash waste, nickel slag and others are environmental issues in the nickel mining industry (nikel.co.id, 2020). Currently, the Ministry of Industry through the research and development unit is trying to raise the potential of nickel slag or slag so that it can be used as industrial raw material that is in line with environmental management in the context of a sustainable economic program (antaranews.com, 2020). Based of this study was conducted on the use of nickel slag as a substitute for coarse aggregate in concrete. This research is an experimental study with the objectives of analyzing the physical and mechanical characteristics of nickel slag, analyzing the compressive strength of concrete using nickel slag as a substitute for coarse aggregate, and analyzing the optimal percentage of nickel slag used as a substitute for coarse aggregate. The results of this study indicate that the use of nickel slag as a substitute for coarse aggregate for 20 MPa concrete, and unable to achieve the planned average compressive strength of 20 MPa plus a margin of 12 MPa, resulted in a decrease in compressive strength and did not provide quality improvement. concrete. The application of nickel slag as a substitute for coarse aggregate in structural concrete with a design compressive strength ≥ 20 MPa is not recommended.
Evaluasi Saluran Drainase di Lingkungan Desa Tumbudadio Kecamatan Tirawuta Kabupaten Kolaka Timur Sukman Sukman; Andi Ahdan Amir; Mahmud Mahmud; Hasrudin Hasrudin
JURNAL UNITEK Vol. 15 No. 2 (2022): Juli - Desember
Publisher : Sekolah Tinggi Teknologi Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52072/unitek.v15i2.450

Abstract

Evaluasi Saluran Drainase Di Lingkungan Desa Tumbudadio adalah salah satu Desa Di Kecamatan Tirawuta Kabupaten Kolaka Timur yang tak luput dari masalah banjir yang banyak menyebabkan banyak kerusakan. Permasalahan yang terjadi pada desa tersebut yaitu setiap tahunnya selalu tergenang air khususnya pada musim penghujan. Untuk perencanaan pengendalian banjir, pengamanan sungai, dan berbagai bangunan air perlu dilakukan analisis hidrologi untuk mendapatkan besaran banjir rencana. Penulisan tugas akhir ini bertujuan untuk memperoleh besaran banjir rencana dan juga memperoleh kapasitas saluran drainase. Dalam penelitian ini menggunakan metode distribusi normal, log normal, log person III, dan gumbel. Hasil evaluasi debit saluran dengan debit rencana saluran drainase periode ulang 5 tahun diperoleh untuk saluran drainase dengan Qp rencana 1,30 m3/det dan Qmax saluran drainase adalah 0,105 m3.det, sehingga drainase tersebut tidak dapat lagi menampung air hujan dengan baik sehingga dapat menimbulkan banjir di kawasan tersebut.
Co-Authors Amir, Andi Ahdan Hasrudin Hasrudin Mahmud Mahmud