If your idea of “coffee for the road” is limited to drinking coffee while you are driving a car on a road, this research study can expand your mental horizon:
“Rheology and microstructure effects of waste spent coffee grounds in modifying asphalt binder,” Mingjun Xie, Linglin Xu, Kai Wu, Yutong Wen, Hongmi Jiang, and Zhengwu Jiang, Low-carbon Materials and Green Construction, vol. 1, no. 1, 2023, article 3.
The authors report:
Herein the biowaste by-product spent coffee grounds (SCGs) from coffee industry were incorporated into asphalt binders for performance enhancement. From the analysis of Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), dynamic shear rheometer (DSR), and Brookfield viscosity rheometer, it is confirmed that SCGs have potential prospects as bio-waste modifiers in the application of sustainable pavements.