A Review of Biomass-Derived Biochar and Its Potential in Asphalt Pavement Engineering

– Enhances rheological properties (e.g., increased stiffness, elasticity, deformation resistance)

– Improves aging resistance and temperature sensitivity

– Reduces VOC emissions compared to conventional petroleum-based binders

– May have negative effects on low-temperature performance at high biochar contents

– Potential variability in biochar properties depending on feedstock and production conditions

– Increases rutting resistance and resilient modulus

– Enhances moisture resistance, particularly at lower biochar contents

– Improves cracking resistance at optimal biochar content

– Reduces VOC and GHG emissions compared to conventional mixtures

– May reduce moisture susceptibility at high biochar contents

– Cracking resistance may decrease at high biochar contents

– Potential variability in biochar properties depending on feedstock and production conditions

– High surface area and porosity for adsorbing pollutants

– Renewable and cost-effective compared to other filter materials

– Contributes to carbon sequestration and emission reduction

– Long-term performance and durability under field conditions need further investigation

– Potential clogging and reduction in permeability over time