CCS and Power Systems
Carbon Storage - Carbon Use and Reuse
Beneficial Use of Carbon Dioxide in Precast Concrete Production
Performer: McGill University - The Royal Institution for the Advancement of Learning
Project No: FE0004285
Researchers at McGill University are working to develop a CO2 curing process for the precast concrete industry that can utilize CO2 as a reactant to accelerate strength gain, reduce energy consumption, and improve the durability of precast concrete products. Carbon dioxide curing of concrete is considered a CO2 storage process. As gaseous CO2 is converted to thermodynamically stable calcium carbonate, the CO2 becomes embedded in calcium silicate hydrate. Concrete masonry blocks and fiber-cement panels are ideal candidate building products for carbon storage, as they are mass-produced, and require steam curing. In order to make the process economically feasible, self-concentrating absorption technology will be studied to produce low cost CO2 for concrete curing and to capture residual CO2 after the curing process. The compact design of the CO2 chamber and low cost carbon capture technology should result in a net process cost of less than $10 per ton of CO2 stored. The proposed research will examine the possibility of achieving a cost-effective, high-performance concrete manufacturing process through a prototype production using specially designed chambers, called CO2 claves, to replace steam kilns and implement forced-diffusion technology to maximize carbon uptake at minimal process costs.