Title:
Industrial Application of In-Situ Carbonate Nanoparticle Seeding
Author(s):
Sean Monkman
Publication:
Web Session
Volume:
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/25/2020
Abstract:
A beneficial use of carbon dioxide in ready mixed concrete production has been developed and installed as a retrofit technology with industrial users. An optimum dose of CO2 is added to ready mixed concrete during mixing and batching; the CO2 mineralizes to form an in-situ nanoscale carbonate reaction product. The carbon conversion leads to finely distributed nanoparticles while avoiding dispersion issues commonly associated with ex-situ nanomaterial additions. The calcite development can improve the performance of the concrete. Increased compressive strength and cement efficiency provides a lever to adjust the mix designs. The use of carbon dioxide along with a lower cement loading reduces the carbon footprint of concrete.