Anisotropic Concrete Compressive Strength

Søren Gustenhoff Hansen, Henrik Brøner Jørgensen, Linh Cao Hoang

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    When the load carrying capacity of existing concrete structures is (re-)assessed it is often based on compressive strength of cores drilled out from the structure. Existing studies show that the core compressive strength is anisotropic; i.e. it depends on whether the cores are drilled parallel or perpendicular to the casting direction. Engineers may therefore misjudge the load carrying capacity. Thus structures may be strengthened or rebuilt unnecessarily or left in service with high failure probability. This paper presents a literature review and an experimental study on the anisotropy and its correlation to the curing time. The experiments show no correlation between the anisotropy and the curing time and a small strength difference between the two drilling directions. The literature shows variations on which drilling direction that is strongest. Based on a Monto Carlo simulation of the expected variation it is argued that the variation of the anisotropy may be statistically coincidences.
    Original languageEnglish
    Title of host publicationProceedings of 39th IABSE Symposium - Engineering the Future
    Number of pages8
    Publication date2017
    Publication statusPublished - 2017
    Event39th IABSE Symposium: Engineering the Future - Vancouver, Canada
    Duration: 21 Sept 201723 Sept 2017
    Conference number: 39

    Conference

    Conference39th IABSE Symposium
    Number39
    Country/TerritoryCanada
    CityVancouver
    Period21/09/201723/09/2017

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