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Please use this identifier to cite or link to this item: http://dspace.vgtu.lt/handle/1/4191

Title: Ecological, thermal and acoustical insulating composite from hemp shives and sapropel binder
Authors: Balčiūnas, Giedrius
Žvironaitė, Jadvyga
Vėjelis, Sigitas
Jagniatinskis, Aleksandras
Gaidučis, Sergejus
Keywords: Hemp shives
Sapropel
Composite
Physical properties
Sound absorption
Hydrophobization
Issue Date: 2016
Publisher: Elsevier
Citation: Balčiūnas, B., Žvironaitė, J., Vėjelis, S., Jagniatinskis, A., Gaidučis, S., 2016. Ecological, thermal and acoustical insulating composite from hemp shives and sapropel binder. Industrial Crops and Products. 91, 286-294
Series/Report no.: 91;
Abstract: The technological parameters for the production of hemp shives (HS) composite with organic sapropel binder and reinforcement additive – paper production waste (PPW) is developed and properties of this composite are investigated in this paper. The amount of sapropel in composite was 5% of HS mass by the amount of dry materials. Thermal processing with highest temperature of 190 °C was used for hardening of the composite. The thermal conductivity and sound absorption coefficients, compressive stress, short-term water absorption, water vapor diffusion resistance factor of composite were investigated. The impact of various factors on the properties of composite was evaluated. The greatest impact has the compaction level of composite, also PPW additive. The impact of HS particles size ranging from 2.5 mm to 20 mm is much smaller. The regression equations enable prediction of thermal conductivity and compressive stress of composite depending on density and HS particles size were derived. The impact of surface hydrophobization on short-term water absorption was evaluated. Compared to HS-lime composite, better thermal and acoustic properties of HS-sapropel composite were obtained.
URI: http://dspace.vgtu.lt/handle/1/4191
ISSN: 0926-6690
Appears in Collections:Moksliniai straipsniai / Research articles

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