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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar Sultra Civil Engineering Journal (SCiEJ)
Pratiwi, Nadya Ayu
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Civil Engineering, Building, Construction & Architecture Transportation Other

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Testing the Compressive Strength of Concrete with the Addition of Coconut Shell Waste Pratiwi, Nadya Ayu; Lakawa, Irwan; Sulaiman, Sulaiman; Hujiyanto, Hujiyanto
Sultra Civil Engineering Journal (SCiEJ) Vol 3 No 2 (2022): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.395 KB) | DOI: 10.54297/sciej.v3i2.350

Abstract

The purpose of this study was to (1) analyze the characteristics of fresh concrete with the addition of coconut shell waste (2) to analyze the compressive strength of concrete with the addition of coconut shell. The research location for making concrete was carried out at the Laboratory of the construction of the water resources and community development department of the Southeast Sulawesi provincial government. There were 24 specimens printed in the form of a cylinder with dimensions of 30cm x 15cm with the composition of adding 0%, 5%, 10%, and 15% coconut shell waste. Which was then tested for compressive strength at the age of 7, 14, and 28 days. Based on the compressive strength test with a quality plan of f'c 20 MPa, on the 28 day test with the addition of 0% is 23.71 MPa, the addition of 5% is 20.59 MPa, the addition of 10% is 19.97 MPa, and an additional 15% is 13.53 MPa. Coconut shell as a substitute for coarse aggregate for quality f'c 20 MPa can only be used under 10% of the amount of coarse aggregate.
OPTIMASI EFISIENSI JALUR TRANSPORTASI KAMPUS MENGGUNAKAN PENDEKATAN TEORI GRAF Fitri, Legita Aulia Syah; Pratiwi, Nadya Ayu; Zaharah, Siti; Pramudia, Jihan; Wati, Dwi Yasinta; Fadhila, Sesaria; Darwanto
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 03 (2026): Volume 11 Nomer 03, September 2026 Publication
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i03.64214

Abstract

The Universitas Muhammadiyah Kotabumi campus is located on Jalan Sindang Sari, an area that serves as a hub for both local economic activity and higher education. However, high traffic volume causes congestion issues for students commuting to the campus. This study employs graph theory to determine the most efficient route—in terms of travel distance—from Jalan Raya Kembang Gading (Dusun Rejosari, RT 001/RW 002, Abung Selatan District, North Lampung Regency, Lampung Province) to the Universitas Muhammadiyah Kotabumi campus (Jalan Hasan Kepala Ratu 1052, Sindangsari, Kotabumi, North Lampung). Dijkstra's algorithm is the specific method utilized for this research. The analysis demonstrates the utility of graph theory in identifying alternative routes, traffic congestion points, and capacity upgrade requirements, thereby providing a foundation for efficient and sustainable urban transportation planning decisions.
Co-Authors Darwanto Fadhila, Sesaria Fitri, Legita Aulia Syah Hujiyanto, Hujiyanto Lakawa, Irwan Pramudia, Jihan Sulaiman Sulaiman Wati, Dwi Yasinta Zaharah, Siti