SUSTAINABLE MANAGEMENT STRATEGIES OF DISASTER DEMOLITION WASTE RECYCLING: COMPUTATIONAL WASTE PREDICTION APPROACH
5th International Conference on Recycling and Reuse (R&R2024), İstanbul, Türkiye, 5 - 06 Temmuz 2024, cilt.1, sa.1, ss.151-152, (Özet Bildiri)
- Yayın Türü: Bildiri / Özet Bildiri
- Cilt numarası: 1
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.151-152
- İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet
Özet
Production amounts and contents of solid waste generally vary depending on factors such as the development levels of countries, their populations, construction activities (building construction, demolition activities and materials used in construction, etc.) and traditions. Construction and demolition waste (CDW), which has a large share, constitutes 36% of the amount of solid waste generated in European countries, 60% in the United States, and 30-40% in China. CDWs are also formed because of natural disasters such as floods, earthquakes and landslides, resulting in larger amounts of waste. Having a heterogeneous structure, CDWs are a mixture of different materials, including inert, non-inert, nonhazardous, and hazardous wastes, as well as heavy mineral fraction wastes (MFWs) such as bricks, tiles and concrete. 86% of CDWs consist of mineral fraction wastes, while the rest consists of bricks, concrete, etc., which vary depending on the type of construction. They may also include materials such as metal, glass, bitumen and organic materials. Moreover, one of the main challenges in CDW management is the lack of relevant policies such as green design, waste minimization, use of recyclable materials and producer-based responsibility systems. These challenges prevent the identification, separate collection, and recovery of high economic value materials in CDWs. Having legal regulations for CDWs in each country, especially encouraging sustainable practices and encouraging the recovery of valuable materials, are important steps for the management of CDWs. With the circular economy approach, it becomes important to reintroduce the materials contained in CDWs to the market. CDWs, which generally consist of inert materials, can be used as alternative raw materials in various production processes such as road paving, construction foundation filling, paving and paving stone production, and ready-mixed concrete production. Thus, for a circular economy, effective management, and a holistic approach to accurately identify and evaluate the potential of CDWs waste materials suitable for reuse, recycling or recovery are essential. It is very important to develop plans for the evaluation of materials contained in CDWs, especially in large quantities that may occur during natural disasters.
In this study, the volumetric and mass amounts of CDWs formed by emergency-heavily damagedcollapsed houses (USDCH), moderately damaged houses (MDH) and lightly damaged houses (LDH) due to earthquakes centered in Kahramanmaraş and Hatay were investigated. Calculations were made for 11provinces on February 6, 2023, using different scenarios in the literature. In addition, the amount of CDW that may arise due to the expected Istanbul Earthquake was also estimated in the study. This research is thought to have an important place in that it provides estimates of the CDW amounts that may occur in various scenarios both under normal conditions and during disasters and contributes to the circular economy through the sustainable management of these wastes.