Harisankar Menon: Sustainably Sourced Biomass Based Bio-binder alternatives for Bitumen in NZ Transport Infrastructure

<p dir="ltr">New Zealand's complete reliance on imported bitumen following the Marsden Point Refinery closure presents significant economic and environmental challenges. This study investigates bio-binders as a sustainable alternative for New Zealand's transport infrastructure through comprehensive economic and environmental modeling. Using lifecycle assessment methodologies adapted to ISO 14040/14044 standards and MEPDG pavement design models, the research evaluates bio-binder performance under New Zealand's diverse climate conditions. The analysis encompasses the full asphalt lifecycle from raw material extraction through end-of-life, incorporating carbon footprint quantification, cost-benefit assessment, and shadow pricing of emission reductions. Results demonstrate significant greenhouse gas reduction potential and carbon sequestration benefits, with long-term cost savings achievable through emission credits and local sourcing. When optimized correctly, bio-binders exhibit favorable resistance to rutting and cracking. </p>