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Functionally graded IWP reinforced cementitious composites: Design, fabrication, and the enhanced ductility
Highlights Novel functionally grading strategies are proposed for IWP architecture design. IWP-reinforcement cementitious composites exhibit ductile mechanical performance. Relative density grading architectures enhance the ductility of composites. Cell size grading architecture improve the flexural strength of composites.
Abstract The Schoen I-graph-wrapped package (IWP) structures have many promising applications for their high specific mechanical properties. In this work, functionally graded IWP (FG-IWP) architectures were developed and constructed to enhance the ductility of the produced cementitious composites. The FG-IWP architectures were designed using two grading strategies: relative-density-based and cell-size-based. The flexural test was used to investigate the mechanical behavior of the proposed composites, including flexural strength and deflections. The failure patterns and strain distributions of the specimens were measured using the Digital image correlation (DIC) approach. The results reveal that the designed IWP architectures noticeably improve the flexural strength and ductility of the composites. Comparing the FG-IWP to the uniformly configured IWP architectures, the grading strategies exhibit an increased ductility. Furthermore, the two grading strategies have different effects on ductility improvement. Cell size gradient strategy yields greater enhancement in flexural strength, whereas relative density strategy leads to better enhancement in ductility. The variations of cell size and relative density parameter ranges also result in distinct improvement on mechanical properties. Overall, the outcomes of this study present an FG-IWP-based novel approach for improving the ductility of cementitious materials.
Functionally graded IWP reinforced cementitious composites: Design, fabrication, and the enhanced ductility
Highlights Novel functionally grading strategies are proposed for IWP architecture design. IWP-reinforcement cementitious composites exhibit ductile mechanical performance. Relative density grading architectures enhance the ductility of composites. Cell size grading architecture improve the flexural strength of composites.
Abstract The Schoen I-graph-wrapped package (IWP) structures have many promising applications for their high specific mechanical properties. In this work, functionally graded IWP (FG-IWP) architectures were developed and constructed to enhance the ductility of the produced cementitious composites. The FG-IWP architectures were designed using two grading strategies: relative-density-based and cell-size-based. The flexural test was used to investigate the mechanical behavior of the proposed composites, including flexural strength and deflections. The failure patterns and strain distributions of the specimens were measured using the Digital image correlation (DIC) approach. The results reveal that the designed IWP architectures noticeably improve the flexural strength and ductility of the composites. Comparing the FG-IWP to the uniformly configured IWP architectures, the grading strategies exhibit an increased ductility. Furthermore, the two grading strategies have different effects on ductility improvement. Cell size gradient strategy yields greater enhancement in flexural strength, whereas relative density strategy leads to better enhancement in ductility. The variations of cell size and relative density parameter ranges also result in distinct improvement on mechanical properties. Overall, the outcomes of this study present an FG-IWP-based novel approach for improving the ductility of cementitious materials.
Functionally graded IWP reinforced cementitious composites: Design, fabrication, and the enhanced ductility
Hu, Jiayi (author) / Dong, Peng (author) / Hou, Runsheng (author) / Cao, Jinrui (author) / Sadeghzade, Sorour (author) / Yuan, Hongyan (author)
Thin-Walled Structures ; 192
2023-09-12
Article (Journal)
Electronic Resource
English
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