Characterization of self-prestressing iron-based shape memory alloy bars for new structures

Zhiqiang Dong,Ziqing Liu,Jianghao Ji,Hong Zhu,Gang Wu,Changjun Sun

Construction and Building Materials（2023）

引用 4|浏览18

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摘要

•A new type of application method of Fe-SMA bars in new structures was proposed.•The Fe-SMA bars can generate a prestress of 218–343 MPa in the concrete environment.•The additional end thread anchorage system can improve the effective prestress of the Fe-SMA bar in concrete.•A prediction model of the long-term prestressing retention of the Fe-SMA bar was proposed.

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关键词

Iron-based shape memory alloy (Fe-SMA),Recovery stress,Prestrain level,Activation temperature,Long-term prestress loss

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