Complex Study of the Composite Building Material Based on Flax Straw Organic Waste: Hygrothermal and Physicochemical Properties

The 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 por...

Full description

Saved in:
Bibliographic Details
Published in:Waste and biomass valorization 2024-04, Vol.15 (4), p.2231-2247
Main Authors: Cerny, Pavel, Babenko, Maryna, Bartos, Petr, Kononets, Yevhen, Kriz, Pavel, Rabenseifer, Roman, Spalek, Frantisek
Format: Article
Language:English
Subjects:
Agricultural wastes
Chemical elements
Composite materials
Elements
Engineering
Environment
Environmental Engineering/Biotechnology
Flax
Heat conductivity
Heat transfer
Industrial Pollution Prevention
Insulating materials
Insulation
Mechanical properties
Moisture
Organic wastes
Original Paper
Physicochemical processes
Physicochemical properties
Porosity
Relative humidity
Renewable and Green Energy
Rural areas
Silica
Silicon dioxide
Sorption
Spectral analysis
Spectrum analysis
Straw
Thermal conductivity
Waste Management/Waste Technology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The 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 SiO 2 in total showed 17.69% quantity volume on the composite surface of 2–5 μm in depth. Graphical Abstract
ISSN:1877-2641
1877-265X
DOI:10.1007/s12649-023-02273-7