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All Journal Borneo Engineering: Jurnal Teknik Sipil Jurnal Infrastruktur
Nur Okviyani
Program Studi Teknik Sipil, Fakultas Teknik, Universitas Sulawesi Barat
Civil Engineering, Building, Construction & Architecture Transportation

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Kinerja Durabilitas Mortar Ramah Lingkungan Berbasis Limbah Ultrafine Ampas Teh Ali Fauzi Mahmuda; Nur Okviyani; Apriansyah Apriansyah
Borneo Engineering: Jurnal Teknik Sipil Vol. 9 No. 3 (2025): Volume 9 Nomor 3 Tahun 2025
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v9i3.454

Abstract

Penelitian ini mengevaluasi pengaruh substitusi ultrafine ampas teh terhadap durabilitas mortar sebagai upaya reduksi jejak semen. Empat campuran disiapkan (0; 5; 7,5; 10% terhadap massa semen). Evaluasi dilakukan melalui uji daya serap air pada umur 28 dan 91 hari, half-cell potential pada 7, 28, dan 91 hari, serta kedalaman penetrasi ion pada 28 hari. Pada 91 hari, daya serap menunjukkan: kontrol 11,22%; 5% 11,03%; 7,5% 16,16%; 10% 17,14. Nilai HCP 91 hari menunjukkan pergeseran lebih positif: kontrol −12,5 mV (risiko rendah), 7,5% −52,7 mV dan 10% −64,1 mV (keduanya risiko rendah), sedangkan 5% ≈ −117,9 mV (sedang). Pada 28 hari, kedalaman penetrasi klorida berturut-turut: kontrol 39,349 mm; 5% 41,941 mm; 7,5% 45,840 mm; 10% 47,064 mm. Temuan ini mengindikasikan adanya batas optimum: 5% memberikan kinerja transport terbaik di antara campuran ampas teh (serapan dan klorida lebih rendah), sedangkan indikator elektrokimia lebih menguntungkan pada 7,5–10%. Secara praktis, rentang 5–7,5% dapat dipilih sesuai prioritas desain (pengendalian ingress klorida vs. penurunan peluang korosi), dengan pengendalian w/b dan curing yang memadai. Hasil mendukung kelayakan ampas teh ultrahalus sebagai material tambah berbasis limbah untuk mortar berketahanan tinggi.
ASSESSMENT OF PEDESTRIAN PERCEPTION TOWARDS THE FUNCTION OF SIDEWALK SERVICES IN MAJENE REGENCY: Case Study: DR. Ratulangi, AP Pettarani and Gatot Subroto Street Banggae subdistrict Akbar Saudi; Nur Okviyani; Ayub Pabbarang
Jurnal Infrastruktur Vol. 10 No. 2 (2024): Jurnal Infrastruktur
Publisher : Jurnal Infrastruktur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/infrastruktur.v10i2.7415

Abstract

Walking is the simplest form of transportation and can be used by everyone. The decline in the desire to walk is associated with the reduced service functionality of sidewalk infrastructure. This study examines pedestrian perceptions regarding the service functionality of sidewalks on DR. Ratulangi, AP. Pettarani, and Gatot Subroto streets in Banggae Subdistrict, Majene Regency. The perception assessment study uses a qualitative and quantitative descriptive statistical approach, referring to the Ministry of Public Works and Housing Regulation No. 03-2014, which provides guidelines for planning, providing, and utilizing infrastructure and pedestrian network facilities in urban areas. The analysis results indicate that the use of sidewalks is mainly driven by considerations of time and safety while walking. Respondent perceptions show that the aspects of comfort, safety, and connectivity on the streets studied fall under the "fairly good" criteria. Based on the existing perceptions, respondents expressed a desire for improvements and enhancements in these variables, which are expected to increase both interest and the need for walking using sidewalk facilities.
Co-Authors Akbar Saudi Ali Fauzi Mahmuda Apriansyah Apriansyah Ayub Pabbarang