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: Mechanical Anchorage of Bars with Screw-Type Coupler and Perforated Plates in Precast Concrete Beam-Column Joint
Author(s): Y.-C. You, K.-D. Choi, K.-H Kim, and L.-H. lee
Publication: Special Publication
Appears on pages(s): 763-778
Keywords: a n c h o r a g e ; beam-column; bond stress; concrete (reinforced); embedment length; hooked bar; precast concrete -
Abstract:The purpose of this study is to determine the characteristics of the mechanical anchorage of reinforcing bars with screw-type coupler and perforated plate, so called MAB-COP (Mechanical Anchorage of Bars with screw-type Coupler and Perforated plate) in precast concrete beam-column joint. The newly proposed mechanical anchorage; MAB-COP is a kind of headed reinforcement, but not screw-threaded on the reinforcement. The bottom bars of the precast beam are anchored by MAB-COP in beam-column joint. A series of test specimens was prepared to consider the effects of the variables, such as the anchorage length of the reinforcing bar (14db, 12db, 9db), and anchoring method. Pullout tests conforming to the ASTM were carried out to assess the effects of several variables on anchoring strength of bars. Based on the test results, it is concluded that the behavior of the specimen anchored by MAB-COP with the anchorage length of 12db, was as good as, or better than that of the specimen anchored with 90-degree standard hook.
Click here to become an online Journal subscriber