Project detail

Experimental analysis of the shrinkage, creep and cracking mechanism of the materials based on the alkali-activated slag

Duration: 01.01.2022 — 31.12.2024

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder (2022-04-14 - 2024-12-31)

On the project

The project aims at a deep and complex experimental determination of shrinkage and creep components, and monitoring of cracking mechanism of alkali-activated slag-based materials in relation to their microstructural evolution. For this purpose, activators with significantly different hydration kinetics, i.e. sodium waterglass, hydroxide, and carbonate, will be used. The shrinkage measurements will start as soon as possible to capture all volume changes during the solidification process. The microstructure undergoes very dynamic changes during the early stages implying that the duration of curing should be reflected within the determination and discussion of drying shrinkage, creep and cracking. In this context, the effect of the composition, curing regime, and aggregate content will be investigated in detail. The role of the specimens’ size and its effect on the drying shrinkage and cracking will also be examined. Additionally, a deep-learning algorithm will be developed for the crack recognition and advanced analysis.

Keywords
alkali-activated slag; shrinkage; creep; cracking; curing

Mark

22-02098S

Default language

English

People responsible

Bílek Vlastimil, Ing., Ph.D. - fellow researcher
Daněk Petr, doc. Ing., Ph.D. - fellow researcher
Dvořák Richard, Ing., Ph.D. - fellow researcher
Hajzler Jan, Ing. - fellow researcher
Kocáb Dalibor, Ing., Ph.D. - fellow researcher
Koplík Jan, Ing., Ph.D. - fellow researcher
Lisztwan Dominik, Ing. - fellow researcher
Nápravník Petr, Ing. - fellow researcher
Rovnaník Pavel, doc. RNDr., Ph.D. - fellow researcher
Šimonová Hana, doc. Ing., Ph.D. - fellow researcher
Kucharczyková Barbara, doc. Ing., Ph.D. - principal person responsible

Units

Institute of Building Testing
- beneficiary (2021-03-15 - 2024-12-31)
Institute of Chemistry
- internal (2022-01-01 - 2024-12-31)
Institute of Materials Science
- internal (2022-01-01 - 2024-12-31)
Institute of Physics
- internal (2022-01-01 - 2024-12-31)
Institute of Structural Mechanics
- internal (2022-01-01 - 2024-12-31)

Results

HAJZLER, J.; BÍLEK, V.; KOTRLA, J.; KUCHARCZYKOVÁ, B. Influence of activator type and slag volume fraction on properties of alkali-activated slag pastes. In 25th International Conference Building Materials, Products and Technologies, ICBMPT 2022. Journal of Physics: Conference Series. 2022. ISSN: 1742-6588.
Detail

DVOŘÁK, R.; CHOBOLA, Z.; PLŠKOVÁ, I.; HELA, R.; BODNÁROVÁ, L. Classification of Thermally Degraded Concrete by Acoustic Resonance Method and Image Analysis via Machine Learning. Materials, 2023, vol. 16, no. 3, ISSN: 1996-1944.
Detail

KUCHARCZYKOVÁ, B.; ŠIMONOVÁ, H.; BÍLEK, V.; NÁPRAVNÍK, P. Pilot Study on Shrinkage and Fracture of Materials Based on the Alkali-Activated Slag: Influence of Curing Regime. In Journal of Physics: Conference Series, Volume 2423, 5th International Conference: Innovative Materials, Structures and Technologies (IMST 2022) 28/09/2022 - 30/09/2022 Riga, Latvia. Journal of Physics: Conference Series. Spojené království Velké Británie a Severního Irska: IOP Publishing, 2023. p. 1-9. ISSN: 1742-6588.
Detail

KUCHARCZYKOVÁ, B.; NÁPRAVNÍK, P.; KOCÁB, D.; LISZTWAN, D.; ROVNANÍK, P.; HAJZLER, J.; BÍLEK, V. Comprehensive study of moist curing duration and activator type on mechanical properties, shrinkage, and cracking of alkali-activated slag. Construction and building materials, 2024, vol. 416, no. 2024, p. 1-19. ISSN: 0950-0618.
Detail

HAJZLER, J.; BÍLEK, V.; KEJÍK, M.; KUCHARCZYKOVÁ, B. Effect of siliceous sand volume fraction on the properties of alkali-activated slag mortars. In International Conference Building Materials, Products and Technologies, ICBMPT 2023. Journal of Physics: Conference Series. IOP Science, 2023. p. 1-7. ISSN: 1742-6596.
Detail

NÁPRAVNÍK, P.; KOCÁB, D.; BÍLEK, V.; LISZTWAN, D.; KUCHARCZYKOVÁ, B. MONITORING THE INTERNAL STRUCTURE BEHAVIOUR OF ALKALI-ACTIVATED SLAG PASTE: EFFECT OF THE CURING MODE. Acta Polytechnica (on-line), 2023, vol. 63, no. 6, p. 411-418. ISSN: 1805-2363.
Detail

NÁPRAVNÍK, P.; LISZTWAN, D.; DANĚK, P.; KUCHARCZYKOVÁ, B. Experimental Determination of the Coefficient of Thermal Expansion of Hardened Alkali-Activated Slag Pastes. In 7th Non-Traditional Cement and Concrete. Advances in Science and Technology. Švýcarsko: Trans Tech Publications Ltd., 2024. p. 19-27. ISBN: 9783035737189. ISSN: 1662-0356.
Detail

KOCÁB, D.; BÍLEK, V.; NÁPRAVNÍK, P.; KUCHARCZYKOVÁ, B. Development of the internal structure of an alkali-activated paste related to the length of curing. In 26th International Conference on Building Materials, Products and Technologies, ICBMPT 2023. Journal of Physics: Conference Series. Bristol, Velká Británie: IOP Publishing, 2023. p. 1-9. ISSN: 1742-6596.
Detail

Responsibility: Kucharczyková Barbara, doc. Ing., Ph.D.