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Experimental measurement of the anchorage length of interrupted prestressing reinforcement

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU145467" target="_blank" >RIV/00216305:26110/22:PU145467 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Experimental measurement of the anchorage length of interrupted prestressing reinforcement

  • Original language description

    This paper focuses on the current problems of breakage of prestressing reinforcement (mostly caused by corrosion) of prestressed precast bridge girders from 1960-1990 and its influence on the residual load-bearing capacity. Actual prestressed precast girders (I-73 structural type), which were developed in 1973 and which were in service from 1979 and 1980, were obtained for the purposes of experimental testing. Researchers from Brno University of Technology designed unique experiments on these girders to determine the actual anchor length of a fully grouted prestressing cable made of 4.5 mm patented wires. Semi-destructive probes were drilled along the length of the prestressing rein-forcement up to the depth of the prestressing reinforcement. Subsequently, optical instruments were inserted into the drilled probes to collect image data, as the transformation of the prestressing reinforcement cannot be determined in any other way in the case of girders of such age. Controlled breaking of the reinforceme

  • Czech name

  • Czech description

Classification

  • Type

    O - Miscellaneous

  • CEP classification

  • OECD FORD branch

    20102 - Construction engineering, Municipal and structural engineering

Result continuities

  • Project

    <a href="/en/project/CK01000042" target="_blank" >CK01000042: Specification of residual load-capacity of prestressed bridges</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2022

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů