Self-sensing properties of steel fiber reinforced-alkali-activated fly ash/slag mortar
Article
Lu, Mingyuan, Xie, Huajie, Wang, Hao and Ma, Yuwei. 2025. "Self-sensing properties of steel fiber reinforced-alkali-activated fly ash/slag mortar." Construction and Building Materials. 458. https://doi.org/10.1016/j.conbuildmat.2024.139580
| Article Title | Self-sensing properties of steel fiber reinforced-alkali-activated fly ash/slag mortar |
|---|---|
| ERA Journal ID | 3470 |
| Article Category | Article |
| Authors | Lu, Mingyuan, Xie, Huajie, Wang, Hao and Ma, Yuwei |
| Journal Title | Construction and Building Materials |
| Journal Citation | 458 |
| Article Number | 139580 |
| Number of Pages | 14 |
| Year | 2025 |
| Publisher | Elsevier |
| Place of Publication | Netherlands |
| ISSN | 0950-0618 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.conbuildmat.2024.139580 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0950061824047226 |
| Abstract | In this study, alkali-activated slag/fly ash mortars with steel fiber (SF-AAFS) were prepared with different steel fiber shape (straight and hooked-end) and fiber content (0.2 vol%, 0.4 vol%, 0.6 vol% and 0.8 vol%). The electrical resistivity and the piezoresistive property of these SF-AAFS mixtures under cyclic compression and three-point bending was investigated. Digital image correlation (DIC) technology was employed to assess the crack propagation process under three-point bending loads. The results demonstrated that SF-AAFS mortars exhibited satisfactory electrical conductivity and piezoresistivity. The increase of steel fiber content resulted in a higher gauge factor (51.33–155.26). Furthermore, SF-AAFS mortars could effectively detect the occurrence of initial cracking by monitoring the changes in resistivity. In conjunction with DIC analysis, it is found that specimens with straight fibers demonstrated a linear relationship (at a fiber content of 0.4 vol%, the |
| Keywords | Alkali-activated materials; Self-sensing property; Steel fiber; Crack-sensing; Digital image correlation; Electrical conductivity |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 400505. Construction materials |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Guangzhou University, China |
| Centre for Future Materials |
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