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All Journal Journal of the Civil Engineering Forum Spektra : Jurnal Ilmu-ilmu Sosial
Khuzamy, Muhammad
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Civil Engineering, Building, Construction & Architecture Social Sciences Other

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Hydrated Lime–Based Coating for Cool Pavement Technologies: Evaluation of Durability and Thermal Performance Khuzamy, Muhammad; Rahman, Taqia; Ahmed, Imtiaz; Zaidi, Syed Bilal Ahmed
Journal of the Civil Engineering Forum Vol. 12 No. 1 (January 2026)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.24124

Abstract

Heat-reflective pavement coatings are commonly employed for road cooling and to mitigate Urban Heat Island (UHI) effects by reflecting solar radiation and reducing surface temperatures. However, their cooling efficiency diminishes over time due to abrasion, soiling, UV exposure, and environmental aging, which degrade the reflective polymer layer. As a cost-effective alternative, hot-rolled hydrated lime (HL) applied to pavement surfaces has emerged, forming a light-coloured mineral layer that enhances reflectivity and potentially reduces pavement temperature. This study investigates hydrated lime (HL) as a mineral-based alternative, applied through hot-rolling to form a reflective surface layer that is compatible with conventional asphalt practices. Its performance was evaluated through laboratory thermal simulations (day–night cycling) and abrasion wear testing and compared with three commercial paint-based HRCs: epoxy resin–TiO₂ and acrylic emulsion–TiO₂. The results show that HL coatings achieved surface temperature reductions of up to 21.89 °C compared to uncoated asphalt, exceeding the best-performing paint-based sample (White-AE, 19.29 °C), suggesting that HL has strong potential as an effective reflective coating. This was achieved with a formulation of fine HL particles (No. 400 mesh) at a higher dosage (200 g/m²). In abrasion resistance tests, HL outperformed paint based HRCs, with lower mass losses (0.6–1.3 g vs. 0.8–1.5 g), which was attributed to stronger adhesion and particle embedment. In addition, post-abrasion tests revealed that HL samples retained better thermal stability, with smaller temperature increases (ΔT: 5.9–6.8 °C) than HRCs (ΔT: 6.3–7.2 °C). Based on these outcomes, HL applied at 200 g/m² using fine particles (No.400 mesh) is recommended as the optimal formulation for maximizing cooling performance and surface durability. Overall, these findings suggest that hot-rolled HL is a durable, low-cost, and effective alternative cooling strategy to popular HRCs for UHI mitigation.
NABI IDRIS AS: TELADAN ILMIAH DAN SPIRITUAL DALAM DAKWAH ISLAM Anim, Sarbini; Gunawan, Chandra; Hudri, Dudun Syaiful; Khuzamy, Muhammad; Huwaida, Hasna'
Spektra: Jurnal Ilmu-ilmu Sosial Vol 6 No 3 (2024): Jurnal Spektra: Jurnal Ilmu-Ilmu Sosial
Publisher : Fakultas Agama Islam Universitas Islam As Syafi'iyah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34005/spektra.v6i3.5283

Abstract

Nabi Idris AS dikenal sebagai salah satu nabi yang memiliki keistimewaan dalam hal ilmu pengetahuan, ketekunan, dan spiritualitas. Dalam literatur Islam, beliau disebut sebagai sosok yang pertama kali memperkenalkan tulisan, menjahit pakaian, serta meneliti pergerakan bintang. Artikel ini bertujuan untuk mengkaji keteladanan Nabi Idris AS dalam konteks dakwah, terutama terkait pentingnya ilmu dan amal dalam kehidupan seorang dai. Penelitian ini menggunakan pendekatan kualitatif melalui studi pustaka dengan analisis tafsir dan hadis. Hasil kajian menunjukkan bahwa metode dakwah Nabi Idris AS mengintegrasikan ilmu, amal, dan hikmah, sehingga dapat menjadi model dakwah ilmiah dan beradab di era modern.
Co-Authors Ahmed, Imtiaz Anim, Sarbini Gunawan, Chandra Hudri, Dudun Syaiful Huwaida, Hasna' Rahman, Taqia Zaidi, Syed Bilal Ahmed