Hopkins et al. (2024): Carbon capture potential and environmental impact of concrete weathering in soil
Brittany Multer Hopkins, Rattan Lal, W. Berry Lyons, Susan A. Welch IN: Science of The Total Environment, https://doi.org/10.1016/j.scitotenv.2024.177692
The objective of this research was to conduct a laboratory experiment and evaluate the environmental impacts and carbon capture potential of concrete as an enhanced weathering material in soil. A column study was conducted with four treatments comprised of: 1) 100 % soil (S treatment), 2) 90 % soil and 10 % concrete by weight of 0.25–0.71 mm diameter fragments (S + Cfine treatment), 3) 90 % soil and 10 % concrete by weight of 8–25 mm diameter fragments (S + Ccoarse treatment), and 4) 100 % concrete composed of 8–25 mm diameter fragments (C treatment). Deionized water was added to the columns for 16 weeks.