Biochar as construction materials for achieving carbon neutrality

Abstract Biochar is a waste-derived material that can sequester carbon at large scale. The development of low-carbon and sustainable biochar-enhanced construction materials has attracted extensive interest. Biochar, having porous nature highly functionalised surface, provide nucleation sites for chemical reactions exhibit compatibility with cement, asphalt, polymer materials. This study critically reviewed the state-of-the-art materials, including biochar-cement composites, biochar-asphalt biochar-plastic etc. efficacies mechanisms biochar as were articulated to improve their functional properties. critical review highlighted roles in cement hydration, surface groups engineered promoting reactions, value-added merits (such humidity regulation, thermal insulation, noise reduction, air/water purification, electromagnetic shielding, self-sensing). major properties are correlated features functionalities Further advances our understanding biochar’s various composites foster next-generation design carbon–neutral Graphical