Complex Study of the Composite Building Material Based on Flax Straw Organic Waste: Hygrothermal and Physicochemical Properties
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Published:2023-10-09
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ISSN:1877-2641
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Container-title:Waste and Biomass Valorization
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language:en
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Short-container-title:Waste Biomass Valor
Author:
Cerny Pavel, Babenko Maryna, Bartos Petr, Kononets YevhenORCID, Kriz Pavel, Rabenseifer Roman, Spalek Frantisek
Abstract
AbstractThe focus of this study is on the hygrothermal and mechanical properties of the elaborated insulating composite based on flax straw. Flax straw is considered as an agricultural waste of organic origin, which has a high sorption capacity and a low thermal conductivity potential due to its natural porosity. Investigations on sorption moisture, thermal conductivity and mechanical properties under laboratory conditions have allowed us to develop a perspective building material suitable for use in ‘green’ construction, especially in rural areas, due to the relative accessibility of the base component. Liquid glass is proposed as a binder. The optimal composition of the filler and binder, sorption moisture, thermal conductivity and surface mapping of the proposed material were investigated. The thermal conductivity reached a minimum value of 0.0728 W m−1 K−1 at relative humidity of 50% during desorption, which is highly competitive to the values for conventional insulation materials on an organic basis. The binder was visually distributed evenly over the surface according to the SEM analysis. Corresponding to the spectral analysis by chemical elements, Na and SiO2 in total showed 17.69% quantity volume on the composite surface of 2–5 μm in depth.
Graphical Abstract
Publisher
Springer Science and Business Media LLC
Subject
Waste Management and Disposal,Renewable Energy, Sustainability and the Environment,Environmental Engineering
Reference50 articles.
1. EU Commission and Parliament: Directive 2002/91/EU of the European Parliament and of the Council of 16 December 2002 on the energy performance of buildings. Off. J. Eur. Union L001, 65–71 (2003) 2. Economidou, M., Todeschi, V., Bertoldi, P., D’Agostino, D., Zangheri, P., Castellazzi, L.: Review of 50 years of EU energy efficiency policies for buildings. Energy Build. 225, 110322 (2020) 3. Assimakopoulos, M., De Masi, R.F., Fotopoulou, A., Papadaki, D., Ruggiero, S., Semprini, G., Vanoli, G.P.: Holistic approach for energy retrofit with volumetric add-ons toward nZEB target: case study of a dormitory in Athens. Energy Build. 207, 109630 (2020) 4. Ascione, F., De Masi, R.F., de Rossi, F., Ruggiero, S., Vanoli, G.P.: Optimization of building envelope design for nZEBs in Mediterranean climate: performance analysis of residential case study. App. Energy 183, 938–957 (2016) 5. Li, H., Wang, S.: Coordinated robust optimal design of building envelope and energy systems for zero/low energy buildings considering uncertainties. Appl. Energy 265, 114779 (2020)
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