Abstract
Smart concrete beam is developed by embedding martensite SMA (shape memory alloy) wires and fibers with adhesives into the tensile zone of concrete beams. The self-repairing performance of smart concrete beams is investigated experimentally and the repairing mechanism of beams is analyzed. Experimental results show that the deflections of beams are decreased and concrete cracks are closed by the SMA wires contracting using electrically heating. The adhesives flow out from the broken-open fibers into the concrete cracks. The strength of the cracked section is improved by the adhesives. The repaired cracks remains closed and new cracks form during reloading for the smart self-repairing concrete beams.
| Original language | English |
|---|---|
| Pages (from-to) | 408-413 |
| Number of pages | 6 |
| Journal | Dalian Ligong Daxue Xuebao/Journal of Dalian University of Technology |
| Volume | 49 |
| Issue number | 3 |
| State | Published - May 2009 |
| Externally published | Yes |
Keywords
- Adhesive
- Repairing fiber
- Self-repairing
- Shape memory alloy
- Smart concrete beam
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