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Article

Mechanical Fracture and Fatigue Characteristics of Fine-Grained Composite Based on Sodium Hydroxide-Activated Slag Cured under High Relative Humidity

1
Faculty of Civil Engineering, Brno University of Technology, Veveří 331/95, 602 00 Brno, Czech Republic
2
Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 612 00 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(1), 259; https://doi.org/10.3390/app11010259
Received: 1 December 2020 / Revised: 24 December 2020 / Accepted: 25 December 2020 / Published: 29 December 2020
(This article belongs to the Special Issue Concrete and Mortar with Non-conventional Materials)
A typical example of an alternative binder to commonly used Portland cement is alkali-activated binders that have high potential as a part of a toolkit for sustainable construction materials. One group of these materials is alkali-activated slag. There is a lack of information about its long-term properties. In addition, its mechanical properties are characterized most often in terms of compressive strength; however, it is not sensitive enough to sufficiently cover the changes in microstructure such as microcracking, and thus, it poses a potential risk for practical utilization. Consequently, the present study deals with the determination of long-term mechanical fracture and fatigue parameters of the fine-grained composites based on this interesting binder. The mechanical fracture parameters are primarily obtained through the direct evaluation of fracture test data via the effective crack model, the work-of-fracture method, the double-K fracture model, and complemented by parameter identification using the inverse analysis. The outcome of cyclic/fatigue fracture tests is represented by a Wöhler curve. The results presented in this article represent the complex information about material behavior and valuable input parameters for material models used for numerical simulations of crack propagation in this quasi-brittle material. View Full-Text
Keywords: fracture; fatigue; experiment; slag; alkali activation; fine-grained composite fracture; fatigue; experiment; slag; alkali activation; fine-grained composite
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MDPI and ACS Style

Šimonová, H.; Kucharczyková, B.; Bílek, V.; Malíková, L.; Miarka, P.; Lipowczan, M. Mechanical Fracture and Fatigue Characteristics of Fine-Grained Composite Based on Sodium Hydroxide-Activated Slag Cured under High Relative Humidity. Appl. Sci. 2021, 11, 259. https://doi.org/10.3390/app11010259

AMA Style

Šimonová H, Kucharczyková B, Bílek V, Malíková L, Miarka P, Lipowczan M. Mechanical Fracture and Fatigue Characteristics of Fine-Grained Composite Based on Sodium Hydroxide-Activated Slag Cured under High Relative Humidity. Applied Sciences. 2021; 11(1):259. https://doi.org/10.3390/app11010259

Chicago/Turabian Style

Šimonová, Hana; Kucharczyková, Barbara; Bílek, Vlastimil; Malíková, Lucie; Miarka, Petr; Lipowczan, Martin. 2021. "Mechanical Fracture and Fatigue Characteristics of Fine-Grained Composite Based on Sodium Hydroxide-Activated Slag Cured under High Relative Humidity" Appl. Sci. 11, no. 1: 259. https://doi.org/10.3390/app11010259

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