Influence of concrete composition on anchorage bond behavior of prestressing reinforcement

J.R. Marti-Vargas, E. Garcia-Taengua, P Serna

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    An experimental research addressing the effects of concrete composition and strength on anchorage bond behavior of prestressing reinforcement is presented to clarify the effect of material properties that have appeared contradictory in previous literature. Bond stresses and anchorage lengths have been obtained in twelve concrete mixes made up of different cement contents (C) – 350 to 500 kg/m3 – and water/cement (w/c) ratios – 0.3 to 0.5 – with compressive strength at 24 h ranging from 24 to 55 MPa. A testing technique based on measuring the prestressing force in specimens with different embedment lengths has been used. The results show that anchorage length increases when w/c increases, more significantly when C is higher; the effect of C reveals different trends based on w/c. The obtained anchorage bond stresses are greater for higher concrete compressive strength, and their average ratio of 1.45 with respect to transmission bond stresses implies a potential bond capacity.
    Original languageEnglish
    Pages (from-to)1156-1164
    Number of pages9
    JournalConstruction and Building Materials
    Volume48
    Early online date26 Aug 2013
    DOIs
    Publication statusPublished - 01 Nov 2013

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction
    • Materials Science(all)

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