TY - JOUR
T1 - Engineering of green cementitious composites modified with siliceous fly ash
T2 - Understanding the importance of curing conditions
AU - Chajec, Adrian
AU - Chowaniec, Agnieszka
AU - Królicka, Aleksandra
AU - Sadowski, Łukasz
AU - Żak, Andrzej
AU - Piechowka-Mielnik, Magdalena
AU - Šavija, Branko
PY - 2021
Y1 - 2021
N2 - Siliceous fly ash can be applied as a cement replacement material for mortars used in cement-based floor overlays. At present, there is no knowledge of the appropriate curing conditions that need to be applied on concrete floors. Moreover, previous research related to curing conditions has left research gaps related to the conditions in which such floors are cured. This study focuses on understanding the importance of the curing conditions that are typical for concrete overlays on the physical, chemical, mechanical, and microstructural properties of siliceous fly ash-modified mortars. The results indicate that curing conditions have a significant impact on these properties (particularly long-term effects). Differences were observed between siliceous fly ash-modified mortars cured in different conditions. In this research, we investigated the volume porosity, water absorption, microstructure, hydration process, pore segmentation, and strength of composites that have had cement partially replaced with the addition of fly ash. It should be noted that the use of siliceous fly ash in properly cured mortars that are applied in floor overlays could lead to a better use of green cementitious composites.
AB - Siliceous fly ash can be applied as a cement replacement material for mortars used in cement-based floor overlays. At present, there is no knowledge of the appropriate curing conditions that need to be applied on concrete floors. Moreover, previous research related to curing conditions has left research gaps related to the conditions in which such floors are cured. This study focuses on understanding the importance of the curing conditions that are typical for concrete overlays on the physical, chemical, mechanical, and microstructural properties of siliceous fly ash-modified mortars. The results indicate that curing conditions have a significant impact on these properties (particularly long-term effects). Differences were observed between siliceous fly ash-modified mortars cured in different conditions. In this research, we investigated the volume porosity, water absorption, microstructure, hydration process, pore segmentation, and strength of composites that have had cement partially replaced with the addition of fly ash. It should be noted that the use of siliceous fly ash in properly cured mortars that are applied in floor overlays could lead to a better use of green cementitious composites.
KW - Cementitious materials
KW - Curing conditions
KW - Mortars
KW - Siliceous fly ash
UR - http://www.scopus.com/inward/record.url?scp=85118778487&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2021.125209
DO - 10.1016/j.conbuildmat.2021.125209
M3 - Article
AN - SCOPUS:85118778487
SN - 0950-0618
VL - 313
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 125209
ER -