亚开行-巴布亚新几内亚道路基础设施中的再生塑料废物（英）-2025.6_83页_3mb

Summary

This ADB Working Paper explores the potential of incorporating locally recycled plastics into road construction as a sustainable solution to Papua New Guinea’s waste management challenges and climate adaptation needs.

Key findings include:

• Waste Management Context: PNG generates significant plastic waste, much of which ends up in landfills, contributing to environmental degradation and missed recycling opportunities.
• Road Infrastructure Challenges: Roads in PNG, especially in Port Moresby, face durability issues due to climate change and inadequate maintenance. Integrating recycled plastics can enhance pavement performance, particularly in high-temperature conditions.
• Technical Feasibility: Methods like dry/mixed and wet techniques show promise, with plastics such as LDPE and PP performing well. Compatibility and processing standards require refinement.
• Environmental and Economic Benefits: Using recycled plastics diverts waste from landfills, reduces carbon emissions, and lowers long-term road maintenance costs. It also creates local job opportunities.
• Implementation Recommendations: A phased approach is recommended, starting with a Port Moresby pilot project to validate technical and performance outcomes. Policy reforms, stakeholder collaboration, and infrastructure investments (e.g., recycling facilities) are crucial for scaling up.

This initiative aligns with PNG’s climate resilience goals and supports broader sustainable development in the region.