1.2. Processing effects in timber
In timber, thermal treatment is used to increase dimensional
stability, reduce moisture and improve durability. Modification
results in changes to the chemical structure and the mechanical
properties [12–19]. In general, thermal treatment is assumed to
reduce the tensile and bending properties of wood, making the
material more brittle in comparison to untreated timber, however
new methods (i.e. acetylation and hydro-thermal) that may reduce
the negative impacts of thermal treatment are under development
[20]. As with laminated bamboo, the treatment method, duration
and temperature have different effects on the properties.
Although the use of thermal treatment can increase durability, its
use is limited in structural applications of timber due to the losses
in strength. Further research is needed to establish the effect of
thermal treatment on the chemical and mechanical properties on
natural materials.
1.2. Processing effects in timberIn timber, thermal treatment is used to increase dimensionalstability, reduce moisture and improve durability. Modificationresults in changes to the chemical structure and the mechanicalproperties [12–19]. In general, thermal treatment is assumed toreduce the tensile and bending properties of wood, making thematerial more brittle in comparison to untreated timber, howevernew methods (i.e. acetylation and hydro-thermal) that may reducethe negative impacts of thermal treatment are under development[20]. As with laminated bamboo, the treatment method, durationand temperature have different effects on the properties.Although the use of thermal treatment can increase durability, itsuse is limited in structural applications of timber due to the lossesin strength. Further research is needed to establish the effect ofthermal treatment on the chemical and mechanical properties onnatural materials.
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