Title:
Nanomodification of Cement Paste’s Microstructure and Pore Structure: Acceleration of Natural CO2 Capture of Hardened Cementitious Composites
Author(s):
Lopez-Arias
Publication:
Web Session
Volume:
ws_F24_Lopez-Arias.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
11/3/2024
Abstract:
\In this presentation, we demonstrate an effective way to enhance the CO2 capture and minerali-zation capacity of concrete by controlling the carbonation kinetics within the cementitious matrix using 1D and 2D carbon-based nanomaterials. When added in a cementitious system, carbon-based nanomaterials provide a unique platform for enhancing the interactions between CO2 and C-S-H due to the ultra-high surface area, essential for surface chemistry. Compared to the CNTs, graphene engineered concrete exhibits a 50% higher CO2 sequestration capacity, due to the 2x higher specific surface area of the 2D GNPs.