Green concrete composite incorporating fly ash with high strength and fracture toughness
Artykuł w czasopiśmie
MNiSW
40
Lista A
| Status: | |
| Autorzy: | Golewski Grzegorz Ludwik |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2018 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 172 |
| Strony: | 218 - 226 |
| Web of Science® Times Cited: | 114 |
| Scopus® Cytowania: | 141 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Nowadays green buildings are a necessary component of securing sustainability, whereas concrete composites with the addition of siliceous fly ash (FA) can certainly be included in the sustainable and green concrete. Effective promotion of green concrete incorporating FA is required in order to minimize the environment threat due to FA waste disposal and reduce cement consumption.In this paper, effects of FA addition on the compressive strengthf cm and fracture toughness of plain concrete are presented. Fracture toughness tests were carried out according to Mode I (tension at bending) following the RILEM Draft Recommendations. The critical values of stress intensity factors,KSIc have been determined. To assess mechanics parameters compressive strength tests and fracture toughness tests were con- ducted and the results were evaluated comparing with reference concrete. In modified concretes, cement was replaced by FA by its weight. Three test groups were constituted with the replacement percentages as: 0% (FA-00), 20% (FA-20) and 30% (FA-30). During the tests, the effect of age of concretes modified with the additive of FA on analysed parameters was determined. The experiments were carried out after: 3, 7,28, 90, 180 and 365 days of curing.Based on the obtained results it can be concluded that, it is possible to make green concrete containing FA with high compressive strength and fracture toughness. The properties of composites with the ad-ditive of FA depend on the age of the concrete during tests. 20% additive of FA guarantees highf cm and K S Ic in mature concretes. oreover results of the KSIc and the f cm are convergent qualitatively. |
