Experimental and statistical investigation of the compressive strength anisotropy in structural concrete

Soren Gustenhoff Hansen*, Jorgen Trankjaer Lauridsen, Linh Cao Hoang

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

    210 Downloads (Orbit)

    Abstract

    This paper offers a new and closer look into the strength anisotropy of concrete by presenting the so far largest experimental programme (290 tests) and by presenting an advanced statistical analysis of the results. The experimental investigation sheds light on the influence of several important design parameters and conditions on the anisotropy. This includes the influence of reinforcement, w/c-ratio, curing time, load history and structural geometry. For this purpose, cores were drilled out at different angles from beam- and slab specimens for compressive testing. The main findings include: a) the reference cylinder strength (i.e. w/c-ratio) does not have a significant influence on the anisotropy when the anisotropy is quantified as an absolute difference between the strength of cores drilled in the two directions; b) the anisotropy in structural members without load history is <5 MPa; c) the anisotropy amounts to 5-10 MPa for members with load history.
    Original languageEnglish
    JournalCement and Concrete Research
    Volume107
    Pages (from-to)304-316
    Number of pages13
    ISSN0008-8846
    DOIs
    Publication statusPublished - 2018

    Keywords

    • Anisotropy
    • Concrete compressive strength
    • Drilled cores
    • Statistical analysis
    • Assessment of load carrying capacity
    • Existing structures

    Fingerprint

    Dive into the research topics of 'Experimental and statistical investigation of the compressive strength anisotropy in structural concrete'. Together they form a unique fingerprint.

    Cite this