Functionally graded IWP reinforced cementitious composites: Design, fabrication, and the enhanced ductility

Hu, Jiayi; Dong, Peng; Hou, Runsheng; Cao, Jinrui; Sadeghzade, Sorour; Yuan, Hongyan

2023-11-01

10.1016/j.tws.2023.111199

THIN-WALLED STRUCTURES   Impact Factor & Quartile

0263-8231

1879-3223

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.

IWP architecture Polymer-reinforced composite Ductility enhancement Functionally graded architectures Additive manufacturing

SCI

English

First ; Corresponding

Science, Technology and Innovation Commission of Shenzhen Municipality[ZDSYS20210623092005017]

Engineering ; Mechanics

Engineering, Civil ; Engineering, Mechanical ; Mechanics

WOS:001080980600001

ELSEVIER SCI LTD

ENGINEERING

Web of Science

Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen Key Lab Soft Mech & Smart Mfg, Shenzhen 518055, Peoples R China

Hu, Jiayi,Dong, Peng,Hou, Runsheng,et al. Functionally graded IWP reinforced cementitious composites: Design, fabrication, and the enhanced ductility[J]. THIN-WALLED STRUCTURES,2023,192.

Hu, Jiayi,Dong, Peng,Hou, Runsheng,Cao, Jinrui,Sadeghzade, Sorour,&Yuan, Hongyan.(2023).Functionally graded IWP reinforced cementitious composites: Design, fabrication, and the enhanced ductility.THIN-WALLED STRUCTURES,192.

Hu, Jiayi,et al."Functionally graded IWP reinforced cementitious composites: Design, fabrication, and the enhanced ductility".THIN-WALLED STRUCTURES 192(2023).