Alkali-Aggregate Reaction in Alkali-Activated Cement Concretes

IOP Conference Series: Materials Science and Engineering. Vol.660: 4th International Conference on Innovative Materials, Structures and Technologies (IMST 2019) 2019
P. Krivenko, O. Gelevera, O. Kovalchuk, Ģirts Būmanis, Aleksandrs Korjakins

The paper discloses the results of a study on structure formation processes in the interfacial transition zone "cement stone − aggregate" of the alkali-activated cement concretes. The results indicate the importance of the content of Al2O3 in the cement and aggregate. Together with components that are able to interact actively with alkalis in the presence of reactive SiO2, the processes taking place during the alkali-aggregate reaction can have weather destructive or constructive effect. The constructive effect is caused by incorporating the corrosion products into alkaline aluminosilicate compounds, thus retarding the internal corrosion of the concrete and providing the higher durability even in case of alkali-activated cements and alkali-susceptible aggregates with relatively high alkali content.

Atslēgas vārdi
alkali-activated, concrete
DOI
10.1088/1757-899X/660/1/012002
Hipersaite
https://iopscience.iop.org/article/10.1088/1757-899X/660/1/012002/pdf

Krivenko, P., Gelevera, O., Kovalchuk, O., Būmanis, Ģ., Korjakins, A. Alkali-Aggregate Reaction in Alkali-Activated Cement Concretes. No: IOP Conference Series: Materials Science and Engineering. Vol.660: 4th International Conference on Innovative Materials, Structures and Technologies (IMST 2019), Latvija, Riga, 25.-27. septembris, 2019. Bristol: IOP Publishing, 2019, Article number 012002. ISSN 1757-8981. e-ISSN 1757-899X. Pieejams: doi:10.1088/1757-899X/660/1/012002

Publikācijas valoda
English (en)