Engineers turn coconut shells into road material; 12.5% biochar makes asphalt stronger and more heat-resistant |
What usually ends up as agricultural waste could have another use beneath our wheels. Engineers have investigated coconut shell biochar as a material for modifying asphalt, finding that a specific proportion could make the road-building material stiffer, stronger and more stable at high temperatures.The study, published in Next Materials in 2026, examined coconut shell biochar…