Article Per Year (5 Year)
p-Index From 2021 - 2026
0.659
P-Index
This Author published in this journals
All Journal Rekayasa Sipil APPLIED RESEARCH ON CIVIL ENGINEERING AND ENVIRONMENT (ARCEE) Jurnal Pengabdian Masyarakat Bhinneka
Nugraha Bintang Wirawan, Nugraha Bintang
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Materials Science & Nanotechnology Public Health Transportation

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
OPTIMIZING SUSTAINABLE GEOPOLYMER PRODUCTION: INTERGRATING REACTIVE ULTRAFINE FLY ASH (RUFA) AND RECYCLED FINE AGGREGATE (RFA) Setiawan, Preza; Wei, Ting Lin; Ummati, Alfinna Mahya; Wirawan, Nugraha Bintang
Applied Research on Civil Engineering and Environment (ARCEE) Vol. 6 No. 01 (2025): Material Technology and Digitalization
Publisher : POLITEKNIK NEGERI JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/arcee.v6i01.6638

Abstract

Construction waste presents considerable risks to human health, safety, and the environment, alongside escalating expenses related to waste management and carbon emissions. Cement manufacturing provides a substantial share of carbon emissions within the construction sector. Geopolymers present a sustainable substitute for conventional cement-based concrete, capable of reducing CO2 emissions and promoting a circular economy. This study investigates the incorporation of Reactive Ultrafine Fly Ash (RUFA) and Recycled Fine Aggregates (RFA) in the production of geopolymers to create sustainable construction materials. The study investigates the physical characteristics, setting time, fluidity, compressive strength, and microstructure of RUFA geopolymers with varying quantities of RFA. The results indicate that incorporating RFA improves compressive strength, with peak results at 40% RFA content. Furthermore, RFA decreases setting time to a specific limit, beyond which additional quantities have negligible effects. Fluidity is maximized in RFA mixtures at 30%, subsequently declining. Scanning electron microscopy analysis revealed microstructural enhancements and increased density in 40% of RFA samples. Statistical analysis indicates the substantial impact of RFA content and sample age on compressive strength. This research offers significant insights into developing sustainable construction materials and underscores the necessity of carefully selecting RFA content. Future research may investigate various combinations and parameters for wider applications in sustainable construction practices.
Curved Damper as Structural Retrofitting Element to Improve the Performance of Steel Truss Bridge Ummati, Alfinna Mahya; Wirawan, Nugraha Bintang; Halim, Hendra
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.1

Abstract

The curved damper can control the structure movement by a physical approach to reduce the lateral deformation under the earthquake, which previously proved to be a significant improvement when applied on a moment-resisting frame in a laboratory scale experiment. With the same idea, a curved damper is considered a passive control to reduce the excessive deformation for a single span of a steel truss bridge, which is analyzed by finite element modeling to evaluate the role of the curved damper in a complex structure. The study of curved dampers applied in this typical bridge showed that mid-span deformation can be mitigated by up to 62% under an earthquake. Hence, a structure with a curved damper is recommended for application in high seismic locations.
Pendampingan Teknis Pengelolaan Limbah Industri Batching Plant dan Asphalt Mixing Plant dalam Mendukung Penyediaan Material Konstruksi Beton Ribowo, Anggarani Budi; Susanti, Junita Eka; Kurniawan, Rahmat; Dwiyana, Putri Ayu; Saputra, Cahyo Agung; Prayogi, Galih Rio; Fitriana, Indri Rahmandhani; Hayati, Julita; Mardika, M Gilang Indra; Aprilia, Ayu Sinta; Khanza, Ayu Kamila; Michael, Michael; Yudi, Ahmad; Nadi, Muhammad Abi Berkah; Wirawan, Nugraha Bintang
Jurnal Pengabdian Masyarakat Bhinneka Vol. 4 No. 3 (2026): Bulan Februari
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v4i3.1232

Abstract

Industri Batching Plant dan Asphalt Mixing Plant (AMP) berperan strategis dalam penyediaan material konstruksi, namun aktivitas operasionalnya menghasilkan limbah padat dan cair yang berpotensi mencemari lingkungan apabila tidak dikelola secara optimal. Sebagai upaya mendukung pengelolaan limbah yang berkelanjutan, tim dosen dan mahasiswa Program Studi Teknik Sipil Institut Teknologi Sumatera (ITERA) melaksanakan kegiatan Pengabdian kepada Masyarakat di Provinsi Lampung dengan fokus pada pendampingan identifikasi, pengolahan, dan pemanfaatan limbah industri sebagai bahan baku alternatif beton non-struktural ramah lingkungan. Metode kegiatan meliputi observasi lapangan untuk mengidentifikasi jenis dan volume limbah, pengambilan sampel sludge beton, sisa agregat, serta debu produksi AMP, pengujian karakteristik fisik material di laboratorium, dan perancangan variasi campuran beton dengan substitusi sebagian agregat menggunakan material limbah yang telah melalui proses pengeringan dan pengayakan. Evaluasi dilakukan melalui pengujian kuat tekan beton pada beberapa variasi komposisi limbah. Hasil menunjukkan bahwa pada komposisi limbah 20%–30%, beton non-struktural mampu mencapai kuat tekan rata-rata 12,73 MPa dan masih memenuhi persyaratan teknis untuk aplikasi seperti paving block dan elemen pracetak ringan. Namun, pada komposisi 75%, kuat tekan menurun signifikan menjadi 5,85 MPa. Dengan ketersediaan limbah sekitar 1–2 ton per minggu, pemanfaatan optimal pada kisaran 20%–30% berpotensi mendukung produksi beton non-struktural berkelanjutan serta penerapan prinsip ekonomi sirkular di sektor konstruksi.
Co-Authors Alfinna Mahya Ummati, Alfinna Mahya Aprilia, Ayu Sinta Budi Ribowo, Anggarani Cahyo Agung Saputra Fitriana, Indri Rahmandhani Galih Rio Prayogi Halim, Hendra Julita Hayati Khanza, Ayu Kamila M Gilang Indra Mardika Michael Michael Nadi, Muhammad Abi Berkah Putri Ayu Dwiyana Rahmat Kurniawan Setiawan, Preza Wei, Ting Lin Yudi, Ahmad