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Article

Blastfurnace Hybrid Cement with Waste Water Glass Activator: Alkali–Silica Reaction Study

1
Faculty of Chemistry, Brno University of Technology, 61200 Brno, Czech Republic
2
Faculty of Civil Engineering, Brno University of Technology, 60200 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
Materials 2020, 13(16), 3646; https://doi.org/10.3390/ma13163646
Received: 16 July 2020 / Revised: 5 August 2020 / Accepted: 14 August 2020 / Published: 17 August 2020
(This article belongs to the Collection Alkali‐Activated Materials for Sustainable Construction)
Hybrid systems represent a new sustainable type of cement combining the properties of ordinary Portland cement and alkali-activated materials. In this study, a hybrid system based on blast furnace slag and Portland clinker was investigated. The economic aspects and appropriate waste management resulted in the usage of technological waste from water glass production (WG-waste) as an alkaline activator. Although the Portland clinker content was very low, the incorporation of this by-product significantly improved the mechanical properties. Nevertheless, the high amount of alkalis in combination with possible reactive aggregates raises concerns about the risk of alkali–silica reaction (ASR). The results obtained from expansion measurement, the uranyl acetate fluorescence method, and microstructure characterization revealed that the undesirable effects of alkali–silica reaction in mortars based on the hydration of hybrid cement are minimal. View Full-Text
Keywords: hybrid cement; alkaline activation; blast furnace slag; waste water glass; ordinary Portland cement; alkali–silica reaction; aggregate hybrid cement; alkaline activation; blast furnace slag; waste water glass; ordinary Portland cement; alkali–silica reaction; aggregate
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MDPI and ACS Style

Kalina, L.; Bílek, V., Jr.; Bradová, L.; Topolář, L. Blastfurnace Hybrid Cement with Waste Water Glass Activator: Alkali–Silica Reaction Study. Materials 2020, 13, 3646. https://doi.org/10.3390/ma13163646

AMA Style

Kalina L, Bílek V Jr., Bradová L, Topolář L. Blastfurnace Hybrid Cement with Waste Water Glass Activator: Alkali–Silica Reaction Study. Materials. 2020; 13(16):3646. https://doi.org/10.3390/ma13163646

Chicago/Turabian Style

Kalina, Lukáš, Vlastimil Bílek Jr., Lada Bradová, and Libor Topolář. 2020. "Blastfurnace Hybrid Cement with Waste Water Glass Activator: Alkali–Silica Reaction Study" Materials 13, no. 16: 3646. https://doi.org/10.3390/ma13163646

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