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Study of keto-hydrazide crosslinking effect in acrylic latex applied to Portland cements with respect to physical properties
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SYSNO ASEP 0570459 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Study of keto-hydrazide crosslinking effect in acrylic latex applied to Portland cements with respect to physical properties Author(s) Zárybnická, Lucie (UTAM-F) RID, SAI, ORCID
Pokorný, J. (CZ)
Machotová, J. (CZ)
Ševčík, Radek (UTAM-F) RID, SAI, ORCID
Šál, J. (CZ)
Viani, Alberto (UTAM-F) RID, ORCID, SAINumber of authors 6 Article number 130897 Source Title Construction and Building Materials. - : Elsevier - ISSN 0950-0618
Roč. 375, April (2023)Number of pages 10 s. Publication form Print - P Language eng - English Country US - United States Keywords Portland cement ; acrylic latex ; keto-hydrazide crosslinking ; water transport properties ; mechanical properties OECD category Materials engineering Method of publishing Limited access Institutional support UTAM-F - RVO:68378297 UT WOS 000959747300001 EID SCOPUS 85149868175 DOI 10.1016/j.conbuildmat.2023.130897 Annotation Polymer-modified Portland-based composites are of interest for specific applications, in reason of their properties. There are different types of commercial additives and waste polymer-based materials applied to cementbased composites, however, their impacts on the environment are debatable. This work has prepared new acrylic latex additives with and without keto-hydrazide crosslinking from standardly available low-cost raw monomers. The influence of their incorporation into Portland cement-based fine-grained mortars has been investigated. The obtained results indicate that the highest effect on heat flow evolution changes has been detected in the case of latexes without crosslinking. The incorporation of both latex types into produced cement composites resulted in a significant increase in open porosity connected with the gradual decrease in mechanical resistance, especially the compressive strength. On the other hand, an important mitigation of liquid water transport properties of latex-modified composites has been achieved, and such properties can be tuned according to the used latex type and its concentration. The developed latex cement-based composites may find utilization as special materials for structures or products for water-loaded constructions or in areas with high concentrations of water-soluble salts or other pollutants. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2024 Electronic address https://doi.org/10.1016/j.conbuildmat.2023.130897
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