Concrete structures strengthening by iron-based shape memory alloys: an experimental demonstration
|
|
|||||||||||
Bibliographic Details
| Author(s): |
Moslem Shahverdi
(Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland)
Christoph Czaderski (Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland) Philipp Annen (Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland) Masoud Motavalli (Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland) |
||||
|---|---|---|---|---|---|
| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016 | ||||
| Published in: | IABSE Congress Stockholm, 2016 | ||||
|
|||||
| Page(s): | 1207-1214 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2016 | ||||
| DOI: | 10.2749/stockholm.2016.1194 | ||||
| Abstract: |
Shape memory alloys (SMAs) have the special property of returning to their initial shape if they are deformed and then heated. This effect is called shape memory effect. Iron-based SMAs (Fe-SMAs) show promising properties with regard to potential applications in civil engineering. The costs of Fe-SMAs can compete with other strengthening methods. In this paper an investigation is presented, where ribbed Fe-SMA bars were produced and used for strengthening and prestressing of real scale RC beams. RC beams strengthened by Fe-SMA or normal steel bars embedded in a shotcrete layer were experimentally examined to investigate their flexural behavior and to demonstrate the application of this strengthening method. The behavior of the beams at serviceability stage was significantly improved by the prestressed Fe-SMA bars. The results show that the application of Fe-SMA bars embedded in a newly applied shotcrete layer was successful. |
||||
| Keywords: |
RC Structures iron based shape memory alloy (Fe-SMA) ribbed Fe-SMA bars shotcrete strengthening prestressing
|
||||