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Open AccessArticle

Effect of Eco-Friendly Cellulose Nanocrystals on Physical Properties of Cement Mortars

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Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40, 20-618 Lublin, Poland
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Institute of Agrophysics PAS, Doswiadczalna 4, 20-290 Lublin, Poland
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Faculty of Environmental Engineering, Lublin University of Technology, Nadbystrzycka 40B, 20-618 Lublin, Poland
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Author to whom correspondence should be addressed.
Polymers 2019, 11(12), 2088; https://doi.org/10.3390/polym11122088
Received: 11 November 2019 / Revised: 5 December 2019 / Accepted: 11 December 2019 / Published: 13 December 2019
(This article belongs to the Special Issue Eco-Friendly Polymeric Materials: A New Chance for Our Future)
Nanocellulose, being a material with nanodimensions, is characterized by high tensile strength, high modulus of elasticity, low thermal expansion, and relatively low density, as well as exhibiting very good electrical conductivity properties. The paper presents the results of research on cement mortars with the addition of nanocrystals cellulose, applied in three different amounts (0.5%, 1.0%, and 1.5%) by weight of cement, including: physical and mechanical properties, frost resistance and resistance against the detrimental effect of salt, and microstructure examination (SEM). Along with an increase in amount of admixture, the weight loss following frost resistance and salt crystallization tests is reduced. Studies have shown that the addition of nanocrystalline cellulose improves the compressive and flexural strength by 27.6% and 10.9%, respectively. After 50 freezing and thawing (F–T) cycles for the mortars with 1.5% nanocellulose admixture, an improvement in frost resistance by 98% was observed. In turn, the sulfate crystallization tests indicated a 35-fold decrease in weight loss following 1.5% nanopolymer addition to the mortar. View Full-Text
Keywords: nanocellulose; nanocrystals; cement mortar; microstructure; physical properties; moisture related properties; frost resistance nanocellulose; nanocrystals; cement mortar; microstructure; physical properties; moisture related properties; frost resistance
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Barnat-Hunek, D.; Grzegorczyk-Frańczak, M.; Szymańska-Chargot, M.; Łagód, G. Effect of Eco-Friendly Cellulose Nanocrystals on Physical Properties of Cement Mortars. Polymers 2019, 11, 2088.

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