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Article

Mechanical Behavior and Frost-Resistance of Alkali-Activated Cement Concrete with Blended Binder at Ambient Curing Condition

Structural Concrete Institute, Leipzig University of Applied Sciences (HTWK Leipzig), 04277 Leipzig, Germany
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Academic Editor: Oldrich Sucharda
Buildings 2021, 11(2), 52; https://doi.org/10.3390/buildings11020052
Received: 28 December 2020 / Revised: 29 January 2021 / Accepted: 1 February 2021 / Published: 4 February 2021
Concrete is the most commonly used construction material because of its various advantages, such as versatility, familiarity, strength, and durability, and it will continue to be in demand far into the future. However, with today’s sensitivity to environmental protection, this material faces unprecedented challenges because of its high greenhouse gas emissions, mainly during cement production. This paper investigates one of the promising cement replacement materials, alkali-activated cement (AAC) concrete. Being produced mainly from byproduct materials and having a comparable structural performance to conventional concrete, AAC concrete can transform the construction industry. Mechanical properties such as compressive and flexural strength and the relationship between them are studied. Different source materials such as fly ash (FA), ground granulated blast furnace slag (GGBS), silica fume (SF), and Metakaolin (MK) are used. The effect of the source materials and the activator solutions on the concrete performance is studied. Furthermore, the freeze-thaw resistance of the concrete is studied. The study results showed that the behavior of AAC depends highly on the source material combinations and type used. The effect of the alkaline solution is also dependent on the source material used. Mixes with higher GGBS content showed the highest strength, while mixes with MK showed the highest flexural strength. The freeze-thaw test results showed that proper design of AAC concrete with lower water content is critical to achieving a good resistance. View Full-Text
Keywords: alkali activated; fly ash; blast furnace slag; silica fume; metakaolin; ambient curing; strength development; flexural strength; freeze-thaw resistance alkali activated; fly ash; blast furnace slag; silica fume; metakaolin; ambient curing; strength development; flexural strength; freeze-thaw resistance
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MDPI and ACS Style

Tekle, B.H.; Holschemacher, K.; Löber, P.; Heiden, B. Mechanical Behavior and Frost-Resistance of Alkali-Activated Cement Concrete with Blended Binder at Ambient Curing Condition. Buildings 2021, 11, 52. https://doi.org/10.3390/buildings11020052

AMA Style

Tekle BH, Holschemacher K, Löber P, Heiden B. Mechanical Behavior and Frost-Resistance of Alkali-Activated Cement Concrete with Blended Binder at Ambient Curing Condition. Buildings. 2021; 11(2):52. https://doi.org/10.3390/buildings11020052

Chicago/Turabian Style

Tekle, Biruk H., Klaus Holschemacher, Philipp Löber, and Björn Heiden. 2021. "Mechanical Behavior and Frost-Resistance of Alkali-Activated Cement Concrete with Blended Binder at Ambient Curing Condition" Buildings 11, no. 2: 52. https://doi.org/10.3390/buildings11020052

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