Innovations in Sustainable Road Engineering: Integrating Bio-based Reinforcements and Advanced Performance Criteria for Enhanced Pavement Durability

The global construction sector is currently responsible for approximately ۳۹% of energy-related carbon dioxide emissions, necessitating a rapid transition toward sustainable "circular economy" practices. This paper explores the integration of industrial hemp as a sustainable reinforcement material in asphalt mixtures and the development of performance-based criteria for bitumen resistance to low-temperature cracking. Drawing on data from ۲۶ road sections, it establishes that bitumen stress relaxation modulus (𝐺(۶۰)) and its slope (𝑚 𝑟 (۶۰)) are critical indicators of pavement longevity. Furthermore, the holistic sustainability of hemp-based materials is evaluated, highlighting their potential as carbon-negative alternatives in highway infrastructure.

کلیدواژه ها:

Low temperature cracking ، Bitumen ، Stress relaxation modulus and its slope ، Performance-based criteria ، Reclaimed Asphalt Pavement - RAP ، Holistic sustainability ، Carbon sequestration