Assessment of Plant Origin By-Products as Lightweight Aggregates for Bio-Composite Bounded by Starch Binder

Laura Vitola, Stanislavs Gendelis, Maris Sinka, Ina Pundiene and Diana Bajare
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Laura Vitola: Institute of Materials and Structures, Riga Technical University, Kalku 1, LV-1658 Riga, Latvia
Stanislavs Gendelis: Institute of Numerical Modelling, University of Latvia, Jelgavas 3, LV-1004 Riga, Latvia
Maris Sinka: Institute of Materials and Structures, Riga Technical University, Kalku 1, LV-1658 Riga, Latvia
Ina Pundiene: Institute of Materials and Structures, Riga Technical University, Kalku 1, LV-1658 Riga, Latvia
Diana Bajare: Institute of Numerical Modelling, University of Latvia, Jelgavas 3, LV-1004 Riga, Latvia

Energies, 2022, vol. 15, issue 15, 1-23

Abstract: Thermal insulation bio-composites made of plant origin by-products as bio-aggregates are one of the ways to decrease the impact of the building and construction sector on CO 2 emissions. In this study, three bio-aggregates were analysed for their potential use in the production of bio-composites with potato starch binder. Technologically important properties, such as particle size, shape and compacted bulk density, as well as properties of the resulting bio-composites were identified. The main characteristics of the aggregates are relatively similar: density of 80–100 kg/m 3 , thermal conductivity of 0.042–0.045 W/m∙K, specific heat capacity of 1240–1330 J/g∙K, kinetic water absorption from 456–584%. This leads to similar basic properties of the produced bio-composites: density around 200 kg/m 3 , thermal conductivity 0.053–0.062 W/m∙K, specific heat capacity 1250–1450 J/kg∙K, with a difference in compressive strength ranging from 0.2 to 0.8 MPa. Created starch binder and agricultural by-product filler materials could be used in the production of boards where strength is required, for example, envelope and wind barrier boards, and thermal insulation boards under floors.

Keywords: hemp shives; flax shives; potato starch binder; characterisation; bio-composites (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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