Evaluation of Fe-Based Shape Memory Alloy (Fe-SMA) as Strengthening Material for Reinforced Concrete Structures
Source abstract
Abstract
This paper aims to evaluate potential of an Fe-based shape memory alloy (Fe-SMA) for strengthening civil structures. Mechanical properties of the Fe-SMA were investigated with a direct tensile test, which showed the stress-induced transformation, stress at fracture of the Fe-SMA, and modulus of elasticity. Heating temperature ranging from 110 ℃ to 220 ℃ and pre-straining level ranging from 2% to 8% of the Fe-SMA were considered as variables to provoke a shape memory effect (SME), which generates a recovery stress. The recovery stresses ranged from 207.59 MPa to 438.61 MPa, which plays a role in introducing a pre-stressing force to concrete members. Bonding behavior of the Fe-SMA embedded into a groove with a cement-based mortar filler was investigated to determine the required bonding length to fully develop the pre-stressing force of the Fe-SMA with a near-surface mounted (NSM) strengthening technique. All the tested specimens showed slippage failure and suggested a minimum bonding length of 600 mm. The pre-stressing force applied on the concrete can be calculated with the recovery stress of the Fe-SMA. Based on those test results, the Fe-SMA shows sufficient potential to be used as strengthening material for civil structures.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Shape Memory Alloy Transformations · Structural Load-Bearing Analysis · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, Chungbuk 28644, Korea
Funding
Korea Agency for Infrastructure Technology Advancement
References (33)
Show source-provided references
1. Plastic deformation and diffusionless phase changes in metals—The gold-cadmium beta phase10.1007/BF03398954 ↗
2. Effect of low-temperature phase changes on the mechanical properties of alloys near composition TiNi10.1063/1.1729603 ↗
3. Hodgson, D.E., Ming, W.H., and Biermann, R.J. (1990). Shape memory alloys. ASM International, Metals Handbook, ASM International. [10th ed.].10.31399/asm.hb.v02.a0001100 ↗
4. Relationship between shape memory material properties and applications
5. The fatigue behavior of shape-memory alloys10.1007/s11837-000-0083-3 ↗
6. Iron-based shape memory alloys for civil engineering structures: An overview10.1016/j.conbuildmat.2014.04.032 ↗
7. The mechanical properties of NiTi-based shape memory alloys10.1016/0001-6160(81)90165-6 ↗
8. Shape memory effect in γ⇄ϵ transformation in Fe-30Mn-1Si alloy single crystals10.1016/0001-6160(82)90011-6 ↗
9. Phase transformation behavior under uniaxial deformation of an Fe-Mn-Si-Cr-Ni-VC shape memory alloy10.1016/j.msea.2013.06.002 ↗
10. Feasibility of iron-based shape memory alloy strips for prestressed strengthening of concrete structures10.1016/j.conbuildmat.2014.01.069 ↗
11. Applications of shape memory alloys in civil engineering structures—Overview, limits and new ideas
12. Vibration mitigation by the reversible fcc/hcp martensitic transformation during cyclic tension–compression loading of an Fe-Mn-Si-based shape memory alloy10.1016/j.scriptamat.2006.02.013 ↗
13. Development of Fe-based shape memory alloys associated with face-centered cubic-hexagonal close-packed martensitic transformations: Part III. microstructures10.1007/BF02647328 ↗
14. Effects of alloying additions on Fe-Mn-Si shape memory alloys10.2355/isijinternational.30.674 ↗
15. Rong, L.J., Ping, D.H., Li, Y.Y., and Shi, C.X. (1995). Improvement of shape memory effect in Fe-Mn-Si alloy by Cr and Ni addition. Scr. Metal. Mater., 32.10.1016/0956-716X(95)00049-2 ↗
16. Effect of thermomechanical treatment on the two-way shape memory effect of NiTi alloy spring10.1016/S0167-577X(01)00539-0 ↗
17. Effect of amount of deformation on the martensitic transformation and shape memory effect in Fe-Mn-Si based shape memory steel
18. Self-Prestressing Using Iron-Based Shape Memory Alloy for Flexural Strengthening of Reinforced Concrete Beams10.14359/51689455 ↗
19. Remarkable improvement of shape memory effect in Fe-Mn-Si based shape memory alloys by producing NbC precipitates10.1016/S1359-6462(01)00978-2 ↗
20. Shape memory effect and crystallographic investigation in VN containing Fe-Mn-Si-Cr alloys10.2320/matertrans.45.930 ↗
21. A Novel Fe-Mn-Si Shape Memory Alloy with Improved Shape Recovery Properties by VC Precipitation10.1002/adem.200800312 ↗
22. Thermo-Mechanical Properties of an Fe-Mn-Si-Cr-Ni-VC Shape Memory Alloy with Low Transformation Temperature10.1002/adem.201100129 ↗
23. Martensitic transformation in Fe-Mn-Si based alloys10.1016/S0921-5093(99)00386-X ↗
24. Lagoudas, D.C. (2008). Shape Memory Alloys: Modeling and Engineering Applications, Springer Science & Business Media.
25. Training effect in Fe-Mn-Si shape-memory alloys10.1007/BF00363341 ↗
26. Smart prestressing with shape-memory alloy10.1061/(ASCE)0733-9399(1998)124:10(1121) ↗
27. Self-stressing fiber composites
28. Repair and strengthening of concrete structures through application of corrective posttensioning forces with shape memory alloys10.3141/1770-03 ↗
29. Behavior of concrete beam with embedded shape memory alloy wires10.1016/j.engstruct.2006.03.002 ↗
30. Feasibility of concrete prestressed by shape memory alloy short fibers10.1007/BF02479551 ↗
31. Stress recovery and cyclic behaviour of an Fe-Mn-Si shape memory alloy after multiple thermal activation10.1088/1361-665X/aaa2c9 ↗
32. Fatigue behavior of a Fe-Mn-Si shape memory alloy used for prestressed strengthening10.1016/j.matdes.2017.07.055 ↗
33. Evaluation of microcracks in thermal damaged concrete using nonlinear ultrasonic modulation technique10.4334/JKCI.2012.24.6.651 ↗