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
Chat with Us Online Now
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: Computerized Tomography Analysis of Reinforced Concrete
Author(s): Harry E. Martz, Daniel J. Scheberk, G. Patrick Roberson, Paulo J. M. Monteiro
Publication: Materials Journal
Appears on pages(s): 259-264
Keywords: gamma rays; nondestructive tests; reinforced concrete; Materials Research
Abstract:X-ray computerized tomography (CT) has the potential of being a powerful, nondestructive method in assessing the degree of distress existing in reinforced concrete members. Paper presents a feasibility study of using CT to inspect reinforced concrete specimens. One of the main objectives was to verify the CT resolution in determining the size and location of voids and reinforcing bars. To assess the efficiency of CT in determining large voids, a concrete cylinder was cast with a conical hole centered along its longitudinal axis. The hole was posteriorly filled with a material of similar density but higher atomic number and the specimen was reanalyzed to determine CT's capacity in distinguishing changes in material composition. To evaluate the efficiency of CT in establishing the location of reinforcing bars, a concrete cylinder with a reinforcing bar embedded in its center and a cube with reinforcing bars distributed along its diagonal were used. The results indicate that CT was able to resolve the many different phases in reinforced concrete (reinforced bars, concrete, and voids) with great accuracy.
Click here to become an online Journal subscriber