The fracture performance of modified recycled concrete: Influence of recycled aggregate and recycled powder
Artykuł w czasopiśmie
MNiSW
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| Status: | |
| Autorzy: | Wan Cong, Hou Panfeng, Zhou Lu, Golewski Grzegorz Ludwik, Zheng Yuanxun, Zhang Tianhang |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2026 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 331 |
| Numer artykułu: | 111709 |
| Strony: | 1 - 17 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus | Google Scholar |
| Efekt badań statutowych | NIE |
| Finansowanie: | Science Foundation Project for Outstanding Youth of Henan Province (Grant No.232300421014), and Key scientific research projects of colleges and universities in Henan Province (Grant No.23ZX014), National Natural Science Foundation of China (Grant No.52279144/523791374). |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| In this paper, the effects of recycled coarse aggregate, recycled fine aggregate and recycled powder on the fracture performance of modified recycled concrete with nano-silica and basalt fibers were investigated. The effects of recycled aggregates and recycled powders on the fracture properties and microstructures, as well as their potential linkages, were evaluated by three-point bending notched beams and microscopic tests. The results showed that the failure pattern of concrete with recycled aggregate was mainly dominated by aggregate damage. Recycled aggregates would reduce the fracture parameters of concrete, in which the impact of recycled fine aggregates is more significant than recycled coarse aggregate in peak load and initiation toughness. In addition, recycled powder can improve the initiation toughness and characteristic length, that could significantly improve the ductility of recycled concrete, but its effect on the unstable toughness and fracture energy is limited compared with that of recycled aggregates. AE analysis has shown that recycled aggregates increase the level of damage within the sample and speed up the fracture process. Based on the the macro–micro perspective, the recycled aggregates decrease fracture parameters because of the old mortar layer and weak interface transition zones. Based on the analyzing the relationship between aggregates, mechanical properties, and fracture properties, a prediction model has been created that overcomes the limitations of existing fracture parameter models and considers the recycled dust content. |
