Cement paste containing short carbon fibers was found to be an effective strain-sensing coating. The coating (with fibers) was on either the tension side or the compression side of a cement specimen (without fiber) under flexure. The resistance was measured with surface electrical contacts on either side. The resistance increased reversibly on the tension side upon loading and decreased reversibly on the compression side upon loading. The behavior was similar whether the strain-sensing coating contained silica fume or latex. © 2001 Elsevier Science Ltd.
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