Influence of surface crack width on bond strength of reinforced Concrete

Denglei Tang, T. K C Molyneaux, David W. Law, Rebecca Gravina

    Research output: Contribution to journalArticle

    Abstract

    This paper reports the results of an experimental program to investigate the changes in the bond characteristics of deformed mild steel reinforcing due to chloride-induced corrosion. The principal parameters investigated are the cover depth, bar diameter, degree of corrosion, and the surface crack width. The results show a strong relationship between the average surface crack width and the average bond strength; the degree of corrosion does not demonstrate such a clear relationship. The bars with a 1 C/f (cover/diameter) show an initial increase in bond strength at the first visible crack; no similar initial increase is observed for the bars with 3 C/f The bottom-cast bars display a higher bond strength with no corrosion, but a similar bond strength is observed for both top- and bottom-cast bars once cracking is observed. Copyright © 2011, American Concrete Institute. All rights reserved.

    Original languageEnglish
    Pages (from-to)29-37
    Number of pages9
    JournalACI Materials Journal
    Volume108
    Issue number1
    Publication statusPublished - Jan 2011

    Fingerprint

    Reinforced concrete
    Cracks
    Corrosion
    Carbon steel
    Concretes

    Keywords

    • Bond
    • Corrosion
    • Cover
    • Deformed reinforcing bar
    • Surface crack width

    Cite this

    Tang, D., Molyneaux, T. K. C., Law, D. W., & Gravina, R. (2011). Influence of surface crack width on bond strength of reinforced Concrete. ACI Materials Journal, 108(1), 29-37.
    Tang, Denglei ; Molyneaux, T. K C ; Law, David W. ; Gravina, Rebecca. / Influence of surface crack width on bond strength of reinforced Concrete. In: ACI Materials Journal. 2011 ; Vol. 108, No. 1. pp. 29-37.
    @article{160115ad78bd410a949f6239310680fd,
    title = "Influence of surface crack width on bond strength of reinforced Concrete",
    abstract = "This paper reports the results of an experimental program to investigate the changes in the bond characteristics of deformed mild steel reinforcing due to chloride-induced corrosion. The principal parameters investigated are the cover depth, bar diameter, degree of corrosion, and the surface crack width. The results show a strong relationship between the average surface crack width and the average bond strength; the degree of corrosion does not demonstrate such a clear relationship. The bars with a 1 C/f (cover/diameter) show an initial increase in bond strength at the first visible crack; no similar initial increase is observed for the bars with 3 C/f The bottom-cast bars display a higher bond strength with no corrosion, but a similar bond strength is observed for both top- and bottom-cast bars once cracking is observed. Copyright {\circledC} 2011, American Concrete Institute. All rights reserved.",
    keywords = "Bond, Corrosion, Cover, Deformed reinforcing bar, Surface crack width",
    author = "Denglei Tang and Molyneaux, {T. K C} and Law, {David W.} and Rebecca Gravina",
    year = "2011",
    month = "1",
    language = "English",
    volume = "108",
    pages = "29--37",
    journal = "ACI Materials Journal",
    issn = "0889-325X",
    publisher = "American Concrete Institute",
    number = "1",

    }

    Tang, D, Molyneaux, TKC, Law, DW & Gravina, R 2011, 'Influence of surface crack width on bond strength of reinforced Concrete', ACI Materials Journal, vol. 108, no. 1, pp. 29-37.

    Influence of surface crack width on bond strength of reinforced Concrete. / Tang, Denglei; Molyneaux, T. K C; Law, David W.; Gravina, Rebecca.

    In: ACI Materials Journal, Vol. 108, No. 1, 01.2011, p. 29-37.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Influence of surface crack width on bond strength of reinforced Concrete

    AU - Tang, Denglei

    AU - Molyneaux, T. K C

    AU - Law, David W.

    AU - Gravina, Rebecca

    PY - 2011/1

    Y1 - 2011/1

    N2 - This paper reports the results of an experimental program to investigate the changes in the bond characteristics of deformed mild steel reinforcing due to chloride-induced corrosion. The principal parameters investigated are the cover depth, bar diameter, degree of corrosion, and the surface crack width. The results show a strong relationship between the average surface crack width and the average bond strength; the degree of corrosion does not demonstrate such a clear relationship. The bars with a 1 C/f (cover/diameter) show an initial increase in bond strength at the first visible crack; no similar initial increase is observed for the bars with 3 C/f The bottom-cast bars display a higher bond strength with no corrosion, but a similar bond strength is observed for both top- and bottom-cast bars once cracking is observed. Copyright © 2011, American Concrete Institute. All rights reserved.

    AB - This paper reports the results of an experimental program to investigate the changes in the bond characteristics of deformed mild steel reinforcing due to chloride-induced corrosion. The principal parameters investigated are the cover depth, bar diameter, degree of corrosion, and the surface crack width. The results show a strong relationship between the average surface crack width and the average bond strength; the degree of corrosion does not demonstrate such a clear relationship. The bars with a 1 C/f (cover/diameter) show an initial increase in bond strength at the first visible crack; no similar initial increase is observed for the bars with 3 C/f The bottom-cast bars display a higher bond strength with no corrosion, but a similar bond strength is observed for both top- and bottom-cast bars once cracking is observed. Copyright © 2011, American Concrete Institute. All rights reserved.

    KW - Bond

    KW - Corrosion

    KW - Cover

    KW - Deformed reinforcing bar

    KW - Surface crack width

    UR - http://www.scopus.com/inward/record.url?scp=79951736146&partnerID=8YFLogxK

    M3 - Article

    VL - 108

    SP - 29

    EP - 37

    JO - ACI Materials Journal

    JF - ACI Materials Journal

    SN - 0889-325X

    IS - 1

    ER -

    Tang D, Molyneaux TKC, Law DW, Gravina R. Influence of surface crack width on bond strength of reinforced Concrete. ACI Materials Journal. 2011 Jan;108(1):29-37.