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Pengaruh Substitusi Cangkang Kerang Darah dan Fly Ash Terhadap Campuran Perkerasan Aspal maulida, siti mira; Suhendra, Tobi; Darma, Yusria; M Saleh, Sofyan; Dasopang, Ahyin Bilhuda; Mauladea, Faiza; Humayra, S
Jurnal Perencanaan dan Penelitian Teknik Sipil Vol 4 No 3 (2025): November
Publisher : Universitas Iskandar Muda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55616/prince.v4i3.1071

Abstract

Research on asphalt mixtures continues to progress through sustainable innovations, particularly in the utilization of waste materials as substitution components. The incorporation of such waste not only helps mitigate environmental but also contributes to improving the mechanical performance of asphalt mixtures. One promising waste material is Blood Cockle Shell (BCS), a by-product of fishery activities that has not yet been fully utilized. In this study, BCS was used as a substitution for fine aggregates in asphalt concrete mixtures, while fly ash was utilized as a filler substitute at a constant proportion of 5%. The main objective of this research was to analyze the effect of CKD content variations of 0%, 10%, and 15% on the Marshall characteristics and durability. The experimental procedure involved conducting Marshall tests on 27 specimens, with the Optimum Asphalt Content (OAC) determined at 5.91%. The results showed that all BCS variations met the Bina Marga (2020) specifications. The best performance was achieved at 10% BCS content, demonstrating high stability, flow within the middle range, and a durability value of 94.07%, exceeding the minimum requirement of 90%. These results suggest that BCS combined with fly ash provides an environmentally sustainable alternative material for improving pavement quality.
Assessment of Service Quality of Sinabang Ferry Port Based on Sinabang - Calang Route Users’ Perception Alpina, Miranti; Darma, Yusria; Refika, Cut Dwi; Mubarak, Mubarak; Dasopang, Ahyin Bilhuda; Mauladea, Faiza; Koting, Suhana
Disaster in Civil Engineering and Architecture Vol. 3 No. 1: April 2026 (in press)
Publisher : Popular Scientist

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70028/dcea.v3i1.72

Abstract

Sinabang Ferry Port serves as a vital transportation hub connecting Simeulue Island with the mainland Sumatra, especially in serving remote and underdeveloped areas. As passenger traffic increases, evaluating service quality becomes crucial to support port management improvements and increase user satisfaction. This study aims to analyze the level of service at Sinabang Ferry Port based on user satisfaction and identify service attributes that need to be prioritized for quality improvement. The data were analyzed using the Importance Performance Analysis (IPA) method with five dimensions of service quality, namely tangibles, reliability, responsiveness, assurance, and empathy. The number of respondents was set at 156 people using the Slovin formula based on the average weekly number of passengers. The results showed that the level of user satisfaction with Sinabang Ferry Port services obtained an average level of suitability (LoS) score of 85,13%, indicating that user may dissatisfaction with port services and the need for improvements. The attributes that need to be prioritized (Quadrant I) include facilities for people with disabilities, pregnant women, and the elderly, information about terminal layout, departures and arrivals, and the availability of security equipment, such as CCTV. Furthermore, the tangibles, reliability, and assurance dimensions require significant attention to enhance service quality. These results provide essential insights for port authorities in formulating targeted and sustainable strategies to strengthen ferry service management and support regional accessibility.