Winter cast rational assessment to control the early age thermal cracking and strength development of slag-volcanic pozzolan concrete
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Cotes-Prieto David, Buasiri Thanyarat, Hedlund Hans, Szeląg Maciej, Panek Rafał, Cwirzen Andrzej |
| Dyscypliny: | |
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| Rok wydania: | 2026 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 128 |
| Numer artykułu: | 116664 |
| Strony: | 1 - 29 |
| Impact Factor: | 8,1 |
| Scopus® Cytowania: | 0 |
| Bazy: | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | The authors extend their appreciation to The Swedish Agency for Economic and Regional Growth (Tillv¨axtverket) for funding this work under the grant numbers 20359978 and 20361632. Also, the authors extend their appreciation to Luleå University of Technology |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Witryna wydawcy |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 18 czerwca 2026 |
| Abstrakty: | angielski |
| Placement of Low Carbon Concrete (LCC) during harsh winter demands the rational selection of curing techniques to prevent low strength gain and early surface cracking. Nonetheless, hardening of LCC in cold climate along with its thermal curing by heating cables has not been widely addressed. In response, this research integrates testing and modelling to assess LCC winter cast. Six mixes were studied, including Portland Cement (PC), Volcanic Pozzolan (VP), Ground Granulated Blast Furnace Slag (GGBFS) and Limestone Filler (LF) as binders, along with superplasticizer and Air-Entrainment to improve their performance. The compressive and tensile strengths were tested at different ages and bath curing temperatures. Moreover, isothermal and semi-adiabatic calorimetries were used to evaluate the heat development of the concretes. The maturity, strength, heat and cross-over thermal damage were then calibrated for each mix. Using the material models, simulations of winter cast, including insulation and heating cables, were performed for semi-massive and massive concrete ground slabs. Furthermore, the surface cracking risk was assessed by a new index based on a maturity and strength dependent maximum temperature difference. The results show that including the activation energy maturity dependence is necessary to precisely predict the temperature development of the concretes. Moreover, it was found that the PC + VP + LF binder produces more heat during the hydration and has a higher activation energy, which is beneficial for winter cast of semi-massive elements. In addition, the inclusion of heating cables proved to be feasible for controlling the surface cracking risk of massive concrete elements containing GGBFS. |
