Abstract
In present experimental study, an innovative technique, based on change in electrical resistance has been employed for structural health monitoring of concrete structures. To use this technique, smart structural concrete has been manufactured with different dosages of electrically conductive micro carbon fibers. Smart concrete cylindrical specimens 45 in number were manufactured with dimensions of 150 mm diameter and 300 mm length with different proportion of micro carbon fibers ranging from 0% to 2% by mass of cement. Mechanical and electrical tests were conducted on smart concrete specimens to find out optimum dosage of carbon fibers and to study strain and crack detection properties. Obtained experimental results from this study showed that percolation threshold of carbon fibers is around 1.5%. It was also observed that electrical resistance based technique can be successfully applied for structural health monitoring of smart concrete.
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