Suwartanti Nayono, Yuli Adiningsih
This study aims to analyze the main type of material waste, the source, and the reasons behind material waste generation in the production process of concrete blocks and tetrapods. This research employs a case study approach to assess the current waste management practices at the production site of concrete blocks and tetrapods for Bogowonto river estuary protection, Yogyakarta International Airport project. Key factors examined as waste sources include design and planning, procurement, material handling, worker practices, construction management, leftover material management, site conditions, and external conditions. Questionnaires, deep interviews, and field observation were conducted to obtain the data. Data was handled using a Likert scale to evaluate responses through questionnaires given to the respondents. Respondents were given set of questions or statements and must choose the option that best corresponds with their perception about the statements or questions. Principal results indicate that a significant portion of material waste is due to improper material handling and inadequate planning. By analyzing these contributing factors, the study proposes methods to minimize waste, including better planning with software, improved procurement strategies, better site management, and enhanced training for workers. Major conclusions highlight that implementing systematic waste management strategies can significantly reduce material wastage, leading to cost savings and environmental benefits. The findings offer practical insights for construction managers and policymakers to improve waste management in similar infrastructure projects. © 2025 Author(s).
Department of Civil Engineering, Faculty of Engineering, Universitas Negeri Yogyakarta, Yogyakarta, 55281, Indonesia; Department of Applied Civil Engineering, Faculty of Applied Science and Engineering, Universitas Negeri Yogyakarta, Yogyakarta, 55281, Indonesia
