Abstract
Summary A description is given of methods and experience of using bonded-wire electrical-resistance strain gauges on concrete, mainly in short-term static loading tests. Precautions required to obtain reliable strain data and the accuracy of surface strain measurement are discussed on the basis of tests and experience, and the merits of mounting the gauges on brass foil are considered. Some information is also included on the questions of a suitable gauge length and the long-term instability of the gauges on concrete.
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