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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Case Studies of CO2 Utilization in Concrete
Author(s): Sean Monkman and Mark MacDonald
Publication: Special Publication
Appears on pages(s): 33-44
Keywords: carbonation; carbon dioxide; concrete masonry unit; ready-mixed concrete; sustainability; upcycling
Abstract:While the cement industry is currently working on a number of initiatives to reduce CO2 associated with cement production (i.e. thermal and electrical efficiency, alternative fuels and clinker substitution) a significant CO2 mitigation is still desired and will require novel solutions. The reaction of carbon dioxide with hydrating cement is known to produce stable carbonate reaction products. These reactions can serve to effectively bind CO2 in the cement matrix during the fresh state while offering material benefits. Carbonation treatments have been integrated into industrial concrete production. Producers can sequester carbon dioxide in their products and more favorably position concrete in a competitive green building product marketplace. The case studies examine the application of carbon dioxide to concrete masonry production (strength, absorption and density) and ready-mix concrete production (workability, strength). The carbon dioxide integration has minimal impact on conventional process operations and works with existing production equipment. Estimates of the net environmental impact are made.
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