By: OMOLE A. O.; ADETOGUN A. C.;
Abstract:
A study was carried out to investigate the dimensional properties of cement bonded particle board from wood waste
of 3 urban trees common in University of Ibadan campus. The 3 wood species used for board production are:
Gmelina arborea, Delonix regia, Samanea sena. The dimensional properties investigated are thickness swelling and
water absorption. Data collected were subjected to analysis of variance (ANOVA) at 0.05 probability level.
Results showed that the mean values obtained for the thickness swelling (TS) after 24- and 48-hours of water
immersion ranged from 0.52% - 7.72% and 0.51% - 7.66%. Cement-bonded particleboard made from Gmelina
arborea sawdust have the lowest value of thickness swelling of 0.51% followed by Samanea sena of 1.79% and
least thickness swelling value of 5.96% from Delonix regia. The effect of wood species, mixing ratio levels and
interaction were significantly different at 5% significance level. The mean values obtained for the water absorption
(WA) after 24- and 48-hours of water immersion ranged from 29.60% - 11.47% and 33.34% - 14.20%. All the wood
species used in the production of cement-bonded particleboards show decrease in the physical properties assessed as
the mixing ratio level of the cement binder increases in the production
Keywords: wood cement panel, Wood waste, municipal tree, dimensional properties
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