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: Study of Reinforced Concrete Beams Exposed to Marine Environment
Author(s): Edward F. O'Neil
Publication: Special Publication
Appears on pages(s): 113-132
Keywords: beams (supports); bond (concrete to reinforcement); chlorides; concrete durability; corrosion; cracking (fracturing); crack width and spacing; deterioration; exposure; flexural strength; freeze-thaw durability; marine atmospheres; reinforced concrete.
Abstract:A study was begun in 1950 to determine the effects of severe natural weathering to stressed, reinforced concrete beams of various compositions and degrees of stress. The objectives of the study were to obtain information on the long-term weathering of air-entrained and non-air-entrained concrete beams containing steels of different compositions, types of deformation, and different levels of stress. The beams were placed on the beach at the natural weathering exposure station on the south side of Treat Island, Cobscock Bay, Eastport, and Lubec in Maine. The beams were subjected to twice daily tidal cycles and, during the winter months, to cycles of freezing and thawing. The beams were inspected annually during the exposure period and evaluated by a team of inspectors rating the degree of deterioration. Maximum crack widths were measured each year from 1956 to 1975 when the exposure period was concluded. Thirteen of the 82 beams that were originally placed remained in 1975 and 11 were returned to the laboratory for testing. The results of the exposure study, the laboratory investigation, and other findings are discussed in this paper.
Click here to become an online Journal subscriber