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All Journal Geosfera: Jurnal Penelitian Geografi Journal of The Civil Engineering Student
Nirmansyah, Nirmansyah
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Environmental Science Social Sciences Transportation

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Kuat Tekan dan Absorbsi Beton Mutu Tinggi Menggunakan Tanah Diatomae Sebagai Substitusi Semen dengan Penambahan Serat Polypropylene dan Serat Kaca Nirmansyah, Nirmansyah; Muttaqin, Muttaqin; Mahlil, Mahlil
Journal of The Civil Engineering Student Vol 5, No 2 (2023): Volume 5 Nomor 2 Juni 2023
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/journalces.v5i2.19464

Abstract

Beton berserat menjadi pilihan seiring berkembangnya teknologi dalam bidang konstruksi karena meningkatkan durabilitas beton terutama kuat tarik beton. Serat yang digunakan pada peneltian ini adalah serat polypropylene dan serat kaca dengan variasi penambahan 0,0%, 0,2%, 0,4%, 0,6% dan 0,8%. Bahan tambah sebagai substitusi semen digunakan tanah diatomae yang telah dikalsinasi selama  5 jam pada suhu 600⁰C dengan kadar silika mencapai 78,73%. Jumlah persentase penambahan tanah diatomae adalah 10% dari berat semen. Benda uji yang digunakan sebagai tinjauan kuat tekan adalah silinder dengan diameter 10 cm dan tinggi 20 cm. Setiap variasi benda uji digunakan 3 benda uji, sehingga total benda uji untuk pengujian kuat tekan sebanyak 60. Benda uji absorbsi kubus dengan ukuran 5 cm ×  5 cm ×  5 cm. Hasil pengujian kuat tekan menyatakan tanah diatomae dan penambahan serat menurunkan nilai kuat tekan beton. Nilai tertinggi kuat tekan beton mutu tinggi adalah 73,70 MPa dengan substitusi 0% tanah diatomae dan 0,0% penambahan serat. Hasil pengujian absorbsi disimpulkan serat mampu mengurangi kadar penyerapan beton mutu tinggi.
Analisis Kesesuaian Lokasi Supermarket Terhadap Pasar Tradisional Di Kecamatan Cihideung Darajat, Zakiah; Kamal, Fadilla; Silvanissa, Lintang Kedjora; Nirmansyah, Nirmansyah; Ramadani, Dila Laila; Sutrisna, Pajar; Denina, Denina; Ghani, Handi Rajib; Marlyono, Setio Galih
Geosfera: Jurnal Penelitian Geografi Vol 4, No 2 (2025): Geosfera : Jurnal Penelitian Geografi
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/geojpg.v4i2.35688

Abstract

Cihideung Subdistrict is one of the centers of economic activity in Tasikmalaya City, which has shown rapid development in the field of trade. This area accommodates various forms of community economic activities, both traditional and modern. The rapid growth of contemporary retail has created new challenges in terms of economy and spatial planning, particularly in relation to the sustainability of conventional markets and the balance of urban space functions. This research methodology uses Geographic Information System (GIS)-based spatial analysis to evaluate the compliance of the distance between modern and traditional markets, in accordance with local regulations that stipulate a minimum distance of 1,000 meters. The analysis results show that four supermarkets in the study area are located within a 1,000-meter radius, thus violating the regulations established by the Mayor of Tasikmalaya Number 1 of 2015. This condition has a significant impact on the economy, society, environment, and urban spatial planning, including a decline in the income of traditional traders, changes in community consumption behavior, and an increase in vehicle volume that causes traffic congestion. However, in addition to these negative impacts, this situation also has positive effects, such as the creation of formal sector jobs and improved job skills for young people. Furthermore, bargaining activities in traditional markets tend to decrease
Co-Authors Aldri Frinaldi Darajat, Zakiah Denina, Denina Ghani, Handi Rajib Kamal, Fadilla Mahlil, Mahlil Marlyono, Setio Galih Ramadani, Dila Laila Silvanissa, Lintang Kedjora Sutrisna, Pajar