Use of a multi-electrode sensor to monitor early age properties of concrete

S. Srinivasan, N. Holmes, S. Nanukuttan, P. A. M. Basheer, Gerard Starrs, Malcolm Chrisp, William John McCarter

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    This paper describes the use of electrical property measurements to study physical and chemical changes occurring within cover-zone concrete during the early stages of hydration (up to 28-days). Concrete samples with different mix proportions have been embedded with sensors which are capable of measuring spatial and temporal changes in electrical resistance and temperature of the concrete. The results obtained from different concrete mixtures indicate that the water-binder ratio and both the dosage and type of mineral admixture influence the measured electrical conductivity and temperature within the cover-zone. Results can be interpreted in terms of setting, hardening and strength development. Furthermore, the changes observed in the electrical conductivity could also be used to evaluate drying effects and the convective zone.
    Original languageEnglish
    Title of host publicationProceedings of the ICDS12-INTERNATIONAL CONFERENCE DURABLE STRUCTURES: From construction to rehabilitation
    Place of PublicationLNEC, LIsbon, Portugal
    Number of pages12
    Publication statusPublished - 31 May 2012

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