Micro-Environmental monitoring of temperature and moisture changes in building stone

Muhammed Basheer, Sudarsan Srinivasan, Bernard Smith, Miguel Gomez-Heras

    Research output: Contribution to conferencePaper

    Abstract

    The monitoring of temperature and moisture changes in response to different micro-environment of building stones is essential to understand the material behaviour and the degradation mechanisms. From a practical point of view, having a continuous and detailed understanding of micro-environmental changes in building stones helps to assist in their maintenance and repair strategies. Temperature within the stone is usually monitored by means of thermistors, whereas wide ranges of techniques are available for monitoring the moisture. In the case of concrete an electrical resistance method has previously been used as an inexpensive tool for monitoring moisture changes. This paper describes the adaptation of this technique and describes its further development for monitoring moisture movement in building stones.
    In this study a block of limestone was subjected to intermittent infrared radiation with programmed cycles of ambient temperature, rainfall and wind conditions in an automated climatic chamber. The temperature and moisture changes at different depths within the stone were monitored by means of bead thermistors and electrical resistance sensors. This experiment has helped to understand the thermal conductivity and moisture transport from surface into deeper parts of the stone at different simulated extreme climatic conditions. Results indicated that variations in external ambient conditions could substantially affect the moisture transport and temperature profile within the micro-environment of building stones and hence they could have a significant impact on stone decay.
    Original languageEnglish
    Pages1-15
    Number of pages15
    Publication statusPublished - Jun 2008
    EventStructural Faults and repair 2008 - Edinburgh, United Kingdom
    Duration: 10 Jun 200812 Jun 2008

    Conference

    ConferenceStructural Faults and repair 2008
    CountryUnited Kingdom
    CityEdinburgh
    Period10/06/200812/06/2008

    Bibliographical note

    Published in CD as file K-SRIN-v2

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