Crack repairing performance by soybean urease induced calcium carbonate precipitation (SICP) combined with fibers and lightweight aggregates
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Wang Yuke, Chen Yuyuan, Marchelina Nadella |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2025 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 458 |
| Numer artykułu: | 139678 |
| Strony: | 1 - 12 |
| Impact Factor: | 8,0 |
| Web of Science® Times Cited: | 6 |
| Scopus® Cytowania: | 6 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Biomineralization technology offers an environmentally sustainable alternative to traditional concrete crack repair methods by utilizing the filling and sealing properties of calcium carbonate precipitation (CCP). Previous research on biomineralization for crack remediation has established its efficacy in addressing cracks with widths not exceeding 1 mm. This study primarily investigates the repair of concrete cracks ranging from 1 to 2 mm in width. A novel biomineralization technique, known as soybean urease-induced calcium carbonate precipitation (SICP), was employed in conjunction with crack-filling materials (CFM) to establish a two-component crack-filling system. The utilized CFM include fiber additives such as lignin fibers (LF), basalt fibers (BF), and polypropylene fibers (PPF), along with lightweight aggregates like fine-silty sand (FSS). A comprehensive series of laboratory experiments, including ultrasonic testing, unconfined compressive strength (UCS) assessments, scanning electron microscopy (SEM), and X-ray diffraction (XRD) analysis, were conducted to evaluate the repair effectiveness of SICP combined with various CFMs. The findings indicate that SICP-CFM repairing measures effectively fill and seal artificial cracks within mortar specimens, significantly reducing sonic time values for repaired specimens. Notably, specimens repaired using the SICP-PPF measure demonstrated optimal performance regarding UCS improvement range and strength restoration rate. This can be attributed to the denser and more robust structure of CCP-PPF composites resulting from differences in precipitation patterns and adhesive characteristics of calcium carbonate. Furthermore, the calcium carbonate present in CCP-PPF composites was confirmed to be calcite with superior crystallinity. |
