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Lightweight blended building waste in the production of innovative cement-based composites for sustainable construction
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SYSNO ASEP 0543588 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Lightweight blended building waste in the production of innovative cement-based composites for sustainable construction Author(s) Pokorný, J. (CZ)
Ševčík, Radek (UTAM-F) RID, SAI, ORCID
Šál, J. (CZ)
Zárybnická, Lucie (UTAM-F) RID, SAI, ORCIDNumber of authors 4 Article number 123933 Source Title Construction and Building Materials. - : Elsevier - ISSN 0950-0618
Roč. 299, September (2021)Number of pages 11 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords building waste ; concrete production ; thermal performance ; sustainability OECD category Materials engineering Method of publishing Limited access Institutional support UTAM-F - RVO:68378297 UT WOS 000685997200008 EID SCOPUS 85108377493 DOI 10.1016/j.conbuildmat.2021.123933 Annotation Intensive quarrying of natural non-renewable resources belongs to the actual topics related to the dynamically developing construction industry worldwide. However, at the same moment, an appreciable quantity of construction and demolition waste (CDW) is generated, from which the primacy to concrete, ceramic and masonry derived materials is attributed. These are already traditionally applied in concrete manufacturing as supplementing and filing materials due to their good recycling ability. Nevertheless, a number of material blends which separation is complicated or highly financial demanding still remain and thus burden our environment. This work has been aimed at the effective application of lightweight blended building waste (LBW) in the manufacturing of eco-friendly concretes. Concrete mixtures with the volumetric content 0–100% of the waste blend have been prepared. The influence of LBW on 28 days’ water cured samples has been investigated with the application of a wide range of experimental procedures and various instrumental techniques. Performed tests revealed a substantial lightening effect of LBW – leading to hardened concretes with a unit weight of about 760 kg_m_3. On the other hand, a high rate of lightening caused considerable decrease in strength properties of produced composites. However, application of LBW up to 25% can be used to preserve usage of these blended concretes for construction applications. Other performed tests showed excellent thermal performance of waste aggregate enriched concretes, and thus these materials may find usage for special filling and flooring applications with minimum loading of bearing structures. 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/10.1016/j.conbuildmat.2021.123933
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