Dimensional Stability and Water Uptake Properties of Cement-Bonded Wood Composites |
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Authors: | Taghi Tabarsa Alireza Ashori |
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Institution: | (1) Department of Wood and Paper Technology, Gorgan University of Agricultural Sciences and Natural Resources (GUASNR), Gorgan, Iran;(2) Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), P.O. Box 15815-3538, Tehran, Iran; |
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Abstract: | This study was carried out to explore the possibility of making cement-bonded composite building products using eucalypt (Eucalyptus camaldulensis) and poplar (Populus deltoides). The experimental design consisted of three treatments—mixture of fibrous materials, cement and calcium chloride (CaCl2) contents. Some physical properties, vis. water absorption (WA) and thickness swelling (TS), were investigated. The ratio
of woodwool : cement was 40:60 and 60:40 by weight. Results showed that, water uptake increased with increasing woodwool content.
In addition, boards fully made with poplar woodwools had superior properties compared to the eucalypt and mixed woodwools.
The presence of eucalypt woodwools in mixture of fibrous materials typically resulted in increase in TS and WA. It is interesting
to note that a dose of 5% of CaCl2 by weight of cement can enhance the effect of cement. Application of Duncan’s Multiple Range Test for the mean values of
the results showed that the effects of all variables and their interactions on the mechanical properties in terms of TS and
WA were highly significant. |
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