Title:
CO2 Uptake and Reactivity of Supplementary Cementitious Materials
Author(s):
Suraneni
Publication:
Web Session
Volume:
ws_F24_Suraneni.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
11/3/2024
Abstract:
Abstract: Several supplementary cementitious materials (SCMs) with a range of calcium contents were exposed to CO2 to quantify their CO2 uptake. The uptake was studied at different moisture contents, temperature, and chamber RH. Thermogravimetric analysis (TGA) run before and after the CO2 chamber exposure was used to quantify uptake by original mass of material. The modified R3 test run before and after exposure was used to quantify reactivity. Some effect of the environmental conditions on the CO2 uptake was found but the order of the uptake did not change significantly. Steel slags and recycled cement materials showed the highest uptake, 10 – 25%. A significant change of the reactivity post-uptake was not noticed for most materials. Post uptake morphology was studied using advanced characterization techniques and linked to uptake and reactivity.