Drying of concrete. Part I: A comparison of instruments for measuring the relative humidity in concrete structures

Kurt Kielsgaard Hansen, Søren Lolk Christensen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

    Abstract

    The paper describes and evaluates five different instruments for measuring the relative humidity (RH) in concrete structures. The instruments work according to different principles. The evaluation of the instruments includes tests for linearity, drift over time, hysteresis and repeatability, and it is performed by use of saturated salt solutions in the laboratory. Further, the five different instruments are placed in the same concrete, and the instruments readings are followed during drying of the concrete for 43 days. The laboratory tests and the measurements in the concrete show that most of the instruments work well.
    Original languageEnglish
    Title of host publicationPapers and Abstracts from the Third International Symposium on Humidity and Moisture
    Place of PublicationTedddington, UK
    PublisherNational Physical Laboratory, Teddington
    Publication date1998
    Pages279-287
    Publication statusPublished - 1998
    EventThird International Symposium on Humidity and Moisture - London
    Duration: 1 Jan 1998 → …

    Conference

    ConferenceThird International Symposium on Humidity and Moisture
    CityLondon
    Period01/01/1998 → …

    Cite this

    Hansen, K. K., & Christensen, S. L. (1998). Drying of concrete. Part I: A comparison of instruments for measuring the relative humidity in concrete structures. In Papers and Abstracts from the Third International Symposium on Humidity and Moisture (pp. 279-287). National Physical Laboratory, Teddington.