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: Experiencies on the external prestressing in the railbridge for the Barcelona-Puigcerda railway over the transverse axis of Cataluña
Author(s): Ayats, J.; Aparicio Bengoechea, A.C.; Ramos, G.
Appears on pages(s): 151 - 160
Abstract:This communication describes the external prestressing system used in the railway bridge for the Barcelona-Puigcerdá railway; as well as the tests performed on the said prestressing system. The bridge overpasses the new road known as the transverse axis of Cataluña. The simply supported bridge, with 37,85 m span, incorporates both internal bonded prestressing tendons and external prestressing tendons; where the external prestressing tendons are replaceable. These tendons, injected with grout, are replaceable thanks to the double wall system arranged at the contact zones with concrete (anchorage zones and deviators), thus avoiding any bond between concrete and tendons. Further to the specific set of tests performed on the anchorage itself, in-situ static and dynamic tests were performed on the external prestressing tendons. The actual friction coefficient was recorded trough the static tests, whereas the dynamic test served to discard any vibration problem in the tendons.
ACI International Partner, ACHE Spain, International Partner Access.
View Resource »