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Effect of cellulose nanofibrils and nanocrystals on physical properties of concrete
Highlights Cellulose nanofibrils and nanocrystals were used to improve concrete properties. The total SFE of concrete mainly depended on the content and kind of nanocellulose. Usage of cellulose nanocrystals improved concrete resistance to freezing and thawing. Addition of ACNF and CCNC improved the durability and strength of concrete.
Abstract The study on the physical properties and durability of concrete with admixture cellulose nanofibrils (ACNF) and cellulose nanocrystals (CCNC) was presented in the paper. The following characteristics of the concrete were defined: absorptivity, density, apparent density, open porosity, contact angle (CA), surface free energy (SFE), compressive strength, flexural tensile strength, freezing-thawing resistance. The use of ACNF and CCNC results in different wetting and adhesion properties of concrete. The highest CCNC addition yielded a concrete with the lowest CA with water and the highest SFE values that evidenced the increased adhesion properties and wettability. The microstructure of concrete with ACNF and CCNC and distribution of cracks and pores within them were investigated by scanning electron microscope (SEM). CCNC improves the freezing-thawing resistance.
Effect of cellulose nanofibrils and nanocrystals on physical properties of concrete
Highlights Cellulose nanofibrils and nanocrystals were used to improve concrete properties. The total SFE of concrete mainly depended on the content and kind of nanocellulose. Usage of cellulose nanocrystals improved concrete resistance to freezing and thawing. Addition of ACNF and CCNC improved the durability and strength of concrete.
Abstract The study on the physical properties and durability of concrete with admixture cellulose nanofibrils (ACNF) and cellulose nanocrystals (CCNC) was presented in the paper. The following characteristics of the concrete were defined: absorptivity, density, apparent density, open porosity, contact angle (CA), surface free energy (SFE), compressive strength, flexural tensile strength, freezing-thawing resistance. The use of ACNF and CCNC results in different wetting and adhesion properties of concrete. The highest CCNC addition yielded a concrete with the lowest CA with water and the highest SFE values that evidenced the increased adhesion properties and wettability. The microstructure of concrete with ACNF and CCNC and distribution of cracks and pores within them were investigated by scanning electron microscope (SEM). CCNC improves the freezing-thawing resistance.
Effect of cellulose nanofibrils and nanocrystals on physical properties of concrete
Barnat-Hunek, Danuta (author) / Szymańska-Chargot, Monika (author) / Jarosz-Hadam, Monika (author) / Łagód, Grzegorz (author)
Construction and Building Materials ; 223 ; 1-11
2019-06-19
11 pages
Article (Journal)
Electronic Resource
English
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