Utilisation of sorghum waste for particleboard production - density - - PowerPoint PPT Presentation

Utilisation of sorghum waste for particleboard production - density profile

Ján Iždinský1 – Zuzana Vrábľová1 – Vilém Štefka1

1Faculty of Wood Sciences and Technology, Technical

University of Zvolen, SK-96053 Zvolen, Slovakia

Performance Testing and Testing Methodologies

• f Non-wood Biobased Materials

Tallinn, Estonia 04 - 05 March 2015

Utilisation of sorghum waste for particleboard production - density profile

The work is oriented on experimental verification of possibility of sorghum utilisation for manufacturing three layer particle boards. Were determined standard physical and mechanical properties and density profile using the gamma rays densitometry “the analyzer of density profiles”.

Sorghum vulgare var. technicum a) sorghum brooms, b) sorghum waste a b

Utilisation of sorghum waste for particleboard production - density profile

Experimental methods In laboratory conditions - produced boards

• dimensions of 360x360x16 mm
• density 720 kg.m-3,
• four variants with ratios of sorghum particles : wood

particles: 3 : 0, 0 : 3, 1 : 2, 2 : 1.

• density profiles determination - apparatus constructed in

laboratories of the Faculty of Wood Sciences and Technology, Technical University in Zvolen.

• the gamma radiation - radioisotope 241Am

Working flow diagram of the analyzer of density profiles

Utilisation of sorghum waste for particleboard production - density profile

sorghum particle 3:0 wood particle sorghum particle 2:1 wood particle sorghum particle 0:3 wood particle sorghum particle 1:2 wood particle Results

Boards with higher proportion of sorghum cause significant densification of surface layers of boards which implies that sorghum ability to densify appears higher than for wood. The obtained research results indicate possibilities of the utilisation of sorghum particles to manufacture particle-boards.

Acknowledgments: This work was supported by the Slovak Research and Development Agency under the contract No. APVV-0200-12. The authors would like to thank also to the COST FP1303.