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Durability of alkali-activated materials
Zourek, Milan ; Hela, Rudolf (referee) ; Bodnárová, Lenka (advisor)
This bachelor’s thesis deals with durability of alkali-activated materials and the use of them in aggressive surroundings, especially in sewer systems. The first half of the theoretical part summarizes requirements for concrete sewer pipes. The most common linings and coatings used in concrete sewer systems are mentioned. The second half of the theoretical part deals with alkali-activated materials, raw materials used for their preparation and their durability. Concretely sulfate attack resistance, chloride attack resistance, acid attack resistance, abrasion, porosity, freeze-thaw resistance, thin layer applications and cracking tendency. In the experimental part of this bachelor’s thesis there were proposed five types of alkali-activated materials application in the aggressive environment of sewer systems. Density and consumption of alkali-activated material by thin layer application was determined as fresh properties. Material was monitored during its solidifying and hardening, especially for crack formation. As hardened properties density, flexural strength, compressive strength, adhesion of thin layer to concrete, thickness of thin layer, freeze-thaw resistance, resistance of surface to water and defrosting chemicals were determined.
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