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All Journal Jurnal Pengabdian Kepada Masyarakat (JPKM) Journal of Technology and Engineering Science and Applied Journal
Rizhard Anselmus Ndolu
Department Of Mining Engineering, Faculty Of Science And Engineering, Universitas Nusa Cendana, Indonesia
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STUDI EKSPERIMEN PENGARUH SUBSTITUSI ABU VULKANIK GUNUNG LEWOTOBI TERHADAP KARAKTERISTIK BETON NORMAL Rizhard Anselmus Ndolu; Noni Banunaek; Frengky S. Banunek
Science and Applied Journal (SIAP) Vol. 2 No. 1 (2025): Sciences and Applied Journal (SIAP)
Publisher : Penelitian dan Pengembangan Ilmu

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Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh penggunaan abu vulkanik Gunung Lewotobi sebagai bahan substitusi sebagian agregat halus terhadap kuat tekan, berat jenis, deformasi, dan indeks ketahanan gempa beton normal. Abu vulkanik yang kaya akan senyawa silika (SiO₂) dan alumina (Al₂O₃) memiliki potensi sebagai material pozzolan alami yang dapat meningkatkan sifat mekanik dan ketahanan dinamis beton. Metode penelitian dilakukan secara eksperimental di laboratorium dengan variasi substitusi abu vulkanik sebesar 0%, 10%, 15%, 20%, dan 25% dari berat total pasir. Pengujian meliputi kuat tekan beton, berat jenis, deformasi maksimum, serta perhitungan Indeks Ketahanan Gempa (IKG). Hasil analisis regresi kuadratik menunjukkan bahwa kadar abu vulkanik berpengaruh signifikan terhadap kuat tekan (R² = 0,575) dan berat jenis beton (R² = 0,543). Kuat tekan optimum diperoleh sebesar 23,231 MPa pada kadar abu vulkanik 8,36%, sedangkan berat jenis optimum sebesar 2250,432 kg/m³ pada kadar 11,889%, keduanya termasuk dalam kategori beton normal menurut SNI 03-2847-2002. Nilai deformasi minimum sebesar 1,80 mm dan Indeks Ketahanan Gempa tertinggi (IKG = 1,00) dicapai pada kadar abu vulkanik 10%. Temuan ini membuktikan bahwa penggunaan abu vulkanik Gunung Lewotobi sebesar ±10% menghasilkan beton yang lebih padat, kuat, dan tahan gempa, sekaligus menjadi solusi ramah lingkungan dalam pemanfaatan limbah vulkanik di wilayah Nusa Tenggara Timur.
ETIKA PUBLIK DALAM TRANSISI ENERGI BERSIH: DILEMA MORAL PENGEMBANGAN PANAS BUMI DI PULAU FLORES Rizhard Anselmus Ndolu; Henda Taopan; Noni Banunaek
Journal of Technology and Engineering Vol 4 No 1 (2026): Journal of Technology and Engineering
Publisher : Yayasan Banu Haji Samsudin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59613/journaloftechnologyandengineering.v4i1.317

Abstract

Indonesia’s transition toward clean energy faces complex ethical dilemmas, particularly in the context of geothermal energy development on Flores Island. Through the Flores Geothermal Island policy, the government seeks to position Flores as a national laboratory for clean energy. However, behind the narrative of a low-carbon energy transition, social and moral tensions have emerged among the state, corporations, and Indigenous communities. This study employs a descriptive qualitative approach based on document analysis and ethical interpretivism to examine the relationship between social legitimacy, ecological justice, and public ethics in geothermal energy governance. The findings indicate the dominance of an economic utilitarian paradigm in national energy policy (40%), with a primary emphasis on efficiency and investment, while the values of ecological justice (30%), public ethics and participation (20%), and local spirituality (10%) remain marginalized. This imbalance reflects a deficit of public ethics in the clean energy transition process on Flores Island. The study highlights the need for a transformation of public ethics in energy policy, shifting from a technocratic orientation toward a paradigm grounded in social, ecological, and spiritual justice. Accordingly, clean energy should be understood not merely as a technological project but also as a moral project that respects both humanity and nature.
The Impact of Climate Change Community Empowerment in Water Resource Monitoring and the Conservation of the Baumata Karst Area as an Effort to Sustain Spring Water Resources in Kupang Regency Noni Banunaek; Herry Z Kotta; Woro Sundari; Robertho Kadji; Irene Augusta Boymau; Matilda Metboki; Aisyah Ahmad; Andreas Sinuhaji; Ika Krisnasiwi; Yusuf Rumbino; Rizhard Anselmus Ndolu
Jurnal Pengabdian Kepada Masyarakat Vol 6 No 1 (2026): Juni 2026
Publisher : Universitas Nusa Cendana

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Abstract

Baumata Village, located in Taebenu District, Kupang Regency, East Nusa Tenggara Province, is a karst area that plays a crucial ecological role as a groundwater recharge zone and a major spring water source utilized by local communities and the regional water utility company (PDAM). The Baumata forest area contributes significantly to maintaining hydrological balance; however, increasing human activities may threaten environmental quality and water sustainability. Therefore, strengthening community capacity in forest conservation and participatory water resource monitoring is essential. This community service program was initiated by the Mining Engineering Study Program to improve public awareness regarding the ecological functions of karst ecosystems and forest conservation while providing technical training on spring discharge measurement and rainfall monitoring using ombrometers. The implementation methods included community outreach, technical training, practical demonstrations, installation of rainfall gauges, and mentoring activities. The results indicated a significant improvement in community understanding of the relationship between forest cover, rainfall patterns, and water availability. Community members were able to independently operate discharge measurement instruments and rainfall gauges and understood the importance of regular hydrological data recording. The program successfully fostered collective awareness and active participation in conserving the Baumata forest area as a critical component of the karst hydrological system. This initiative may serve as a sustainable community-based water resource management model for karst regions in Kupang Regency. Keywords: karst area, spring water, forest conservation, water discharge, community empowerment
PUBLIC ETHICS PUBLIC ETHICS IN THE CLEAN ENERGY TRANSITION: THE MORAL DILEMMA OF GEOTHERMAL DEVELOPMENT IN FLORES ISLAND: PUBLIC ETHICS IN THE CLEAN ENERGY TRANSITION: THE MORAL DILEMMA OF GEOTHERMAL DEVELOPMENT IN FLORES ISLAND Rizhard Anselmus Ndolu; Henda Taopan; Noni Banunaek
Journal of Technology and Engineering Vol 3 No 2 (2025): Journal of Technology and Engineering
Publisher : Yayasan Banu Haji Samsudin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59613/journaloftechnologyandengineering.v3i2.318

Abstract

The transition toward clean energy in Indonesia presents a complex ethical dilemma, particularly in the context of geothermal energy development on Flores Island. Through the Flores Geothermal Island policy, the government aims to establish Flores as a national laboratory for clean energy. However, behind the narrative of a low-carbon transition lies a deep moral and social tension between the state, corporations, and Indigenous communities. This study employs a qualitative descriptive approach based on document analysis and ethical interpretivism to examine the interrelations among social legitimacy, ecological justice, and public ethics in geothermal energy governance. The analysis reveals the dominance of an economic utilitarian paradigm in national energy policy (40%), emphasizing efficiency and investment, while the values of ecological justice (30%), public ethics and participation (20%), and local spirituality (10%) remain marginalized. This imbalance indicates a deficit of public ethics in the clean energy transition process in Flores. The findings highlight the urgent need to transform energy policy ethics from a technocratic orientation toward a paradigm rooted in social, ecological, and spiritual justice. Therefore, clean energy should not be viewed merely as a technological project but as a moral project that honors both humanity and nature.
Co-Authors Aisyah Ahmad Andreas Sinuhaji Frengky S. Banunek Henda Taopan Henda Taopan Herry Z Kotta Ika Krisnasiwi Irene Augusta Boymau Matilda Metboki Noni Banunaek Noni Banunaek Noni Banunaek Noni Banunaek Robertho Kadji Yusuf Rumbino