INFLUENCE OF PARTICULATE MIXTURE CONTAINING STABILISED WOOD ON LONG-TERM BEHAVIOUR OF WOOD-CEMENT COMPOSITES. CASE STUDY

Abstract

This paper presents research on the changes in the properties of cement-bonded particleboard modified with particulate mixture (PM). PM replaced 4% of the binder (cement) and 4% of the filler (spruce chips). The cement-bonded particleboards were tested for physical (bulk density, swelling, linear expansion due to relative humidity changes) and mechanical properties (modulus of rupture and modulus of elasticity). Development of phase composition and microstructure by XRD and SEM were also analysed. The long-term behaviour of wood-cement composites was studied over a period of 2 years. The physical, mechanical properties and microstructure of the modified particleboards were compared with commercially produced cement-bonded particleboards from CIDEM Hranice, Inc. There is no intentional change in properties when using PM compared to the reference boards and the values reached the EN 634-2: 2007.