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All Journal Journal of Degraded and Mining Lands Management Jurnal Perencanaan Wilayah DINAMIKA Jurnal Ilmiah Teknik Mesin Metropilar Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Media Konstruksi : Jurnal Ilmiah Teknik Sipil SemanTIK : Teknik Informasi Al-Ard: Jurnal Teknik Lingkungan Stabilita : Jurnal Ilmiah Teknik Sipil Fakultas Teknik Universitas Halu Oleo Kendari Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT) Jurnal Pengabdian Multidisiplin Jurnal Pengabdian Nusantara (JPN) Indonesian Geotechnical Journal Jurnal Pengabdian Masyarakat dan Riset Pendidikan Jurnal Manajemen Rekayasa (Journal of Engineering Management) Media Konstruksi : Jurnal Ilmiah Teknik Sipil Journal of Moeslim Research Technik Scientechno: Journal of Science and Technology
Edward Ngii
Department Of Civil Engineering, Halu Oleo University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Case Study of the Use of Recycled Concrete in Highway Projects Ilham Ilham; Edward Ngii; La One
Journal of Moeslim Research Technik Vol. 1 No. 5 (2024)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/technik.v1i5.1558

Abstract

The increasing demand for sustainable construction practices has led to the exploration of recycled materials, particularly in road projects. Recycled concrete not only reduces waste but also offers potential environmental and economic benefits. Understanding its effectiveness in real-world applications is essential for promoting its wider use. This study aims to evaluate the performance of recycled concrete in highway construction projects, assessing its structural integrity, cost-effectiveness, and environmental impact. It seeks to provide insights into the feasibility of using recycled materials in road infrastructure. A case study approach was employed, analyzing three highway projects that utilized recycled concrete. Data were collected through site inspections, material testing, and interviews with project managers. Key performance indicators, such as compressive strength, durability, and cost savings, were evaluated. The findings indicate that recycled concrete performed comparably to traditional concrete in terms of compressive strength and durability. Cost analysis revealed significant savings, with recycled concrete reducing material costs by an average of 15%. Environmental assessments highlighted notable reductions in carbon emissions and landfill waste. The research concludes that recycled concrete is a viable option for highway construction, offering both economic and environmental advantages. The positive outcomes from the case studies support the broader adoption of recycled materials in infrastructure projects. Future studies should focus on long-term performance and the development of guidelines for integrating recycled concrete in various construction applications.
DEVELOPMENT OF LOW-CARBON GEOPOLYMER CONCRETE USING FLY ASH AND INDUSTRIAL SLAG AS SUSTAINABLE MATERIAL ENGINEERING Edward Ngii; Dulguun Amarsaikhan; Fatima Al-Said; Khaled Al-Sharqi
Scientechno: Journal of Science and Technology Vol. 4 No. 2 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/scientechno.v4i2.2954

Abstract

The construction industry is a major contributor to global carbon emissions, with traditional Portland cement production accounting for approximately 8% of total CO? output. The development of low-carbon alternatives is essential to achieving sustainability goals and reducing the environmental footprint of infrastructure. This research focuses on developing geopolymer concrete using fly ash and industrial slag as sustainable raw materials, offering a viable substitute for ordinary Portland cement. The objective of the study is to evaluate the mechanical performance, durability, and carbon footprint reduction potential of geopolymer concrete mixtures under varied proportions of fly ash and slag. A quantitative experimental method was employed, involving the synthesis of multiple mix designs with differing binder ratios, followed by compressive strength testing, microstructural analysis, and lifecycle assessment (LCA). The results indicate that the optimal blend of 60% fly ash and 40% slag achieved a 42% reduction in carbon emissions compared to conventional concrete while maintaining a compressive strength exceeding 45 MPa after 28 days of curing. The inclusion of slag significantly enhanced early strength development and chemical stability due to calcium enrichment, while the use of fly ash contributed to long-term durability. The study concludes that fly ash–slag–based geopolymer concrete represents a promising low-carbon alternative, combining industrial waste valorization with superior structural performance. Future applications could advance sustainable material engineering practices in both civil and environmental infrastructure sectors.
Co-Authors Abdul Kadir Abdul Kadir Abdul Kadir Abdul Rahim Sya’ban Achmad Nur Aliansyah Adi Kumala Adris Ade Putra Adzikin, Muhammad Thahir Agustan Agustan Agustan Agustan Agustan Agustan Agustan Agustan, Agustan Ahmad Syarif Sukri Ahmad, Siti Nurjanah Ahmad, Sitti Nurjannah Akbar Haryadi Aksar, Prinob Aksar, Prinop Aliansyah, Achmad Nur Anafi Minmahddun Azikin, Thahir Baso Mursidi, Baso Basrami Dwi Putra Chaerul Adam Darwin Darwin Dimas Manggala Putra Dulguun Amarsaikhan Erik Astrawan Fatima Al-Said Fauziah Kudus Fikri Aris Munandar Fitriah S Fitriah S Fitriah.S Fitriah.S Golok Jaya, La Ode Muhammad Harmunadin Harmunadin Hasmiati Hasmiati Hujiyanto, Hujiyanto Husain, Fajerullah Akbar Ihram Fajar Ilham Ilham Isnawati Isnawati Jasmardin, Jasmardin Kaimuddin, Januar Saleh Khaled Al-Sharqi La Hamimu La Ode Hasan Jamilu La Ode Muhamad Magribi La Ode Muhamad Magribi, La Ode Muhamad La Ode Muhamad Nurrakhmad Arsyad La One La Welendo Lalang, Lalang Latif Budi Suparma Latif Budi Suparma Lawalendo Lawalendo LM. Fid Aksara Magribi, La Ode Muh. Masdiana Masdiana Muammar Makmur Muammar Makmur Muammar Makmur, Muammar Muh. Sholeh Muh. Syarif Munansar Munansar Nasrul Nasrul Nini Hasriyani Aswad Nuhun, Ridwan Syah Nur Fajriah Muchlis Nurdin, Sri Asnita Putra, Basrami Dwi Rachman, Ranno Marlany Rahmat Rahmat Ridwansyah Nuhun Rini Sriyani Rini Sriyani Rini Sriyani Riska Riska Romy Talanipa Rudi Balaka Simatupang, Minson Siti Nurjanah Ahmad Sitti Nurjannah Ahmad Sitti Nurjannah Ahmad Slamet Slamet Slamet Sudarsono Sudarsono Sulfriadin, Sulfriadin Sulha Sulha Sulha Surya Syawaluddin Tahir Azikin Takdir, Riyan Abdillah Thahir Azikin Triantini. S. Putri Try Sugiyarto Soeparyanto Uniadi Mangidi Vieta Oktaviana Arkos Syahputri Ressang Wa Ode Sitti Warsita Mahapati Wunantari, Wa Ode Arie