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Lightweight concretes with improved water and water vapor transport for remediation of damp induced buildings
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SYSNO ASEP 0546408 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Lightweight concretes with improved water and water vapor transport for remediation of damp induced buildings Author(s) Pokorný, J. (CZ)
Ševčík, Radek (UTAM-F) RID, SAI, ORCID
Šál, J. (CZ)
Zárybnická, Lucie (UTAM-F) RID, SAI, ORCID
Žák, J. (CZ)Number of authors 5 Article number 5902 Source Title Materials. - : MDPI
Roč. 14, č. 19 (2021)Number of pages 16 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords lightweight concrete ; alternative aggregate ; compressive strength ; remediation intervention OECD category Materials engineering Method of publishing Open access Institutional support UTAM-F - RVO:68378297 UT WOS 000707328100001 EID SCOPUS 85116973973 DOI 10.3390/ma14195902 Annotation Most of the historical and old building stock in Europe are constructed from masonry, when brick, stones, or their combination are bound with traditional mortars. Rising damp, due to accompanying effects, is the main factor influencing the quality of indoor climate as well as having an important impact on the durability of masonry structures. In this study, new types of lightweight concrete with waste aggregate content as a suitable material for remediation of damp damaged masonries were designed and tested. Alternative aggregate served as silica sand substitution in the range of 0–100 vol.%. Basic structural properties, mechanical resistance, water, and water vapor transport properties were measured after 28 days of water curing and were compared with dense reference concrete and with traditional masonry materials as well. Moreover, the porous structure of produced concretes and changes caused by usage of alternative aggregate usage were evaluated
with the mercury intrusion porosimetry (MIP) technique. Obtained experimental data showed the suitability of modified concretes with 25–50 vol.% of waste aggregate content to ensure acceptable strength and hydric properties, and these properties were found to be comparable with masonry structures and materials used in the past.Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2022 Electronic address https://doi.org/10.3390/ma14195902
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