Estudo da compatibilidade entre a madeira e as cascas de Eucalyptus grandis e cimento portland
The characteristics of cement bonded particleboards can be jeopardized by chemical incompatibility between some lignocellulosic materials and cement, which can inhibit the glue of this cement; however, this effect can be minimized with chemicals treatments of the materials. The different species o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Portuguese |
| Published: |
Universidade Federal de Santa Maria
2007-01-01
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| Series: | Ciência Florestal |
| Online Access: | http://www.redalyc.org/articulo.oa?id=53417308 |
| Summary: | The characteristics of cement bonded particleboards can be jeopardized by chemical incompatibility
between some lignocellulosic materials and cement, which can inhibit the glue of this cement; however, this
effect can be minimized with chemicals treatments of the materials. The different species of Eucalyptus can
be promising as raw material in the production of these panels, mainly residues produced in form of barks.
The objective of the work was to evaluate chemical compatibility of wood and barks (without and with
chemical treatment) of Eucalyptus grandis with cement. The chemical treatment of barks was carried out
with sodium hydroxide. Results showed that the Eucalyptus grandis wood presented a moderate aptitude
with cement, the treated barks presented high aptitude and the untreated bark presented extremely low
aptitude. It was verified positive influence of the chemical treatment in the barks, making possible, in the
future, the incorporation of these elements in the manufacturing of cement-bonded particleboard. |
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| ISSN: | 0103-9954 1980-5098 |