In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
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: Carbonation: A Probabilistic Approach to Derive Provisions for Prescriptive Requirements in Codes and Standards
Author(s): M. Maage
Publication: Special Publication
Appears on pages(s): 701-720
Keywords: carbonation; concrete; prescriptive requirements; probabilistic approach; reinforcement corrosion; standardization
Abstract:In most existing standards and guidelines, durability of reinforced concrete structures is covered by prescriptive requirements. For corrosion initiated by carbonation, this may include requirements on w/cm, type and content of cement, compressive strength, concrete cover etc. Future requirements will probably be performance based, defined according to a probabilistic approach. However, today we don’t have the appropriate information on the correlation between carbonation rate and factors like w/cm, type and content of cement and environmental situation, especially air humidity and CO2 concentration. Therefore, requirements in standards are still prescriptive. However, the pre- scriptive specifications within codes and standards may be based on testing of existing structures and using a probabilistic approach when analysing the results. A probabilistic approach to the process of defining prescriptive requirements for concrete exposed to carbonation, is presented. The approach is based on the philosophy given in the European standard EN 1990 (1) "Basic of Structural Design," which means that the "failure" reliability Z is calculated as the difference between a resistance against "failure" R (e.g., concrete cover) and an environmental load or action F (e.g., time dependent carbonation depth). Both resistance and load are expressed in a probabilistic way. The new European standard EN 206-1 (2) is used as example, but the presented principle may be used in other situations.
Click here to become an online Journal subscriber