Shear strengthening of slender reinforced concrete T-shaped beams using iron-based shape memory alloy strips

Cladera, A.; Montoya-Coronado, Luis A.; Ruiz-Pinilla, Joaquín G.; Ribas, Carlos

doi:10.1016/j.engstruct.2020.111018

Cited by 49 publications

(25 citation statements)

References 28 publications

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“…Recent research and development activities enable a wider use of Fe-SMA in the construction industry. In particular, the research and application of Fe-SMA over the past 10 years can be mainly divided into two fields: (1) SME-induced prestressing technique for repairing and strengthening structures [ 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 , 137 , 138 , 139 ], and (2) seismic damping [ 23 , 28 , 75 ].…”

Section: Research and Potential Engineering Applicationsmentioning

confidence: 99%

“…Nail-based mechanical anchorage system is an alternative method for the Fe-SMA NSMR system. As shown in Figure 14 d, Fe-SMA strips can be easily fixed to the surface of the base concrete layer by the aid of direct-fasteners (e.g., nails) and nail-setting devices [ 131 ]. The total duration for installing and activating a 5-m Fe-SMA strip is within 20 min [ 132 ].…”

Section: Research and Potential Engineering Applicationsmentioning

confidence: 99%

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Iron-Based Shape Memory Alloys in Construction: Research, Applications and Opportunities

Zhang

et al. 2022

Materials

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As a promising candidate in the construction industry, iron-based shape memory alloy (Fe-SMA) has attracted lots of attention in the engineering and metallography communities because of its foreseeable benefits including corrosion resistance, shape recovery capability, excellent plastic deformability, and outstanding fatigue resistance. Pilot applications have proved the feasibility of Fe-SMA as a highly efficient functional material in the construction sector. This paper provides a review of recent developments in research and design practice related to Fe-SMA. The basic mechanical properties are presented and compared with conventional structural steel, and some necessary explanations are given on the metallographic transformation mechanism. Newly emerged applications, such as Fe-SMA-based prestressing/strengthening techniques and seismic-resistant components/devices, are discussed. It is believed that Fe-SMA offers a wide range of applications in the construction industry but there still remains problems to be addressed and areas to be further explored. Some research needs at material-level, component-level, and system-level are highlighted in this paper. With the systematic information provided, this paper not only benefits professionals and researchers who have been working in this area for a long time and wanting to gain an in-depth understanding of the state-of-the-art, but also helps enlighten a wider audience intending to get acquainted with this exciting topic.

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Section: Research and Potential Engineering Applicationsmentioning

confidence: 99%

Section: Research and Potential Engineering Applicationsmentioning

confidence: 99%

Iron-Based Shape Memory Alloys in Construction: Research, Applications and Opportunities

Zhang

et al. 2022

Materials

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“…Most iron-based SMA compositions in bulk are Fe, which is an inexpensive and easily accessible material. As a result, they are a low-cost category of SMAs that exhibit SME and high ductility [ 55 ].…”

Section: Basics Of Shape Memory Alloysmentioning

confidence: 99%

Application of Shape Memory Alloys in Retrofitting of Masonry and Heritage Structures Based on Their Vulnerability Revealed in the Bam 2003 Earthquake

et al. 2021

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For decades, one of the most critical considerations of civil engineers has been the construction of structures that can sufficiently resist earthquakes. However, in many parts of the globe, ancient and contemporary buildings were constructed without regard for engineering; thus, there is a rising necessity to adapt existing structures to avoid accidents and preserve historical artefacts. There are various techniques for retrofitting a masonry structure, including foundation isolations, the use of Fibre-Reinforced Plastics (FRPs), shotcrete, etc. One innovative technique is the use of Shape Memory Alloys (SMAs), which improve structures by exhibiting high strength, good re-centring capabilities, self-repair, etc. One recent disastrous earthquake that happened in the city of Bam, Iran, (with a large proportion of masonry buildings) in 2003, with over 45,000 casualties, is analysed to discover the primary causes of the structural failure of buildings and its ancient citadel. It is followed by introducing the basic properties of SMAs and their applications in retrofitting masonry buildings. The outcomes of preceding implementations of SMAs in retrofitting of masonry buildings are then employed to present two comprehensive schemes as well as an implementation algorithm for strengthening masonry structures using SMA-based devices.

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“…The preponderance of the compositions in mass in most iron-based SMAs is Fe, which is an inexpensive and easily attainable material. As a result, they are a low-cost SMA category with SME and high ductility [50]. These properties include a high pre-stressing strength varying from 13 to 80 MPa at phase transition temperatures ranging from 130 • C to 580 • C. As a consequence, they may be embedded with concrete buildings without causing harm to the surrounding concrete owing to high temperatures upon actuation.…”

Section: Fe-based Shape Memory Alloysmentioning

confidence: 99%

Sustainability of Civil Structures through the Application of Smart Materials: A Review

et al. 2021

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Every year, structural flaws or breakdowns cause thousands of people to be harmed and cost billions of dollars owing to the limitations of design methods and materials to withstand extreme earthquakes. Since earthquakes have a significant effect on sustainability factors, there is a contradiction between these constraints and the growing need for more sustainable structures. There has been a significant attempt to circumvent these constraints by developing various techniques and materials. One of these viable possibilities is the application of smart structures and materials such as shape memory and piezoelectric materials. Many scholars have examined the use of these materials and their structural characteristics up to this point, but the relationship between sustainability considerations and the deployment of smart materials has received little attention. Therefore, through a review of previous experimental, numerical, and conceptual studies, this paper attempts to draw a more significant relationship between smart materials and structural sustainability. First, the significant impact of seismic events on structural sustainability and its major aspects are described. It is then followed by an overview of the fundamentals of smart material’s behaviour and properties. Finally, after a comprehensive review of the most recent applications of smart materials in structures, the influence of their deployment on sustainability issues is discussed. The findings of this study are intended to assist researchers in properly addressing sustainability considerations in any research and implementation of smart materials by establishing a more explicit relationship between these two concepts.

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Shear strengthening of slender reinforced concrete T-shaped beams using iron-based shape memory alloy strips

Cited by 49 publications

References 28 publications

Iron-Based Shape Memory Alloys in Construction: Research, Applications and Opportunities

Iron-Based Shape Memory Alloys in Construction: Research, Applications and Opportunities

Application of Shape Memory Alloys in Retrofitting of Masonry and Heritage Structures Based on Their Vulnerability Revealed in the Bam 2003 Earthquake

Sustainability of Civil Structures through the Application of Smart Materials: A Review

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