Measures for improving quality and shape stability of sawn softwood timber during drying and under service conditions
This project will improve the quality and increase the value of sawn softwood through the development, assessment and implementation of innovative drying approaches that minimise distortion during and after kilning. Seven innovative procedures will be assessed on both laboratory and full commercial scales. Following a comprehensive assessment of the quality of timber produced using each technique, best practice guidance will be produced to facilitate and encourage take up of the results by industry. The project is supported by strong industry collaboration.
The principal objective of this project is to improve the quality and increase the value of sawn softwood through the development, assessment and implementation of innovative drying approaches that minimise distortion during and after kilning. Within this overall objective there are a number of specific sub-objectives that relate to different stages of the integrated chain, extending from raw material production to the market:
1) to use existing knowledge to improve quality of sawn timber in terms of straightness of end-products
2) to design and test novel techniques and strategies for minimising deformation during drying
3) to optimise processing and drying procedures with respect to the occurrence of deformation during drying
4) to assess and model the in-service performance of timber products after being dried using novel drying techniques
5) to assess physical and mechanical properties of timber as a result of the novel drying approaches
6) to develop and introduce measuring techniques for identifying logs and sawn timber highly prone to distortion before drying
7) to inform the European wood industry about possible ways of reducing deformations during drying and end-use conditions.
Progress to Date
Very good progress has continued to be made during the second year of the project. Results are emerging and are indicating that improvements in drying procedures can be obtained.
1) The protocols for selection of test battens have continued to be used successfully throughout year 2.
2) Novel methods of drying continue to be investigated. Progress is excellent. Drying by high temperature and under dynamic top loading have produced much improved timber drying quality.
3) Battens dried by novel techniques have been measured for distortion and moisture content and these results have been forwarded to BFH to be put into the database to facilitate comparisons of the novel methods.
4) Partners 1 and 2 have received battens dried by the novel techniques, and measurements have been taken and forwarded to BFH. This Work Package will be competed in year 3.
5) The growth properties of battens dried in accordance with novel techniques have been measured to facilitate accurate comparisons between techniques. This work will be competed in year 3.
Scientist responsible for the project
Mr KEITH MAUN
WD2 7JR Watford
United Kingdom (The) - GB
Phone: +44 1923 664812
Fax: +44 1923 664785
||Building Research Establishment Ltd
||01 October 2001
||2 103 162 €
|Total EC contribution
||1 253 724 €
- NETHERLANDS ORGANISATION FOR APPLIED SCIENTIFIC RESEARCH, Netherlands (The) - NL
- BUILDING RESEARCH ESTABLISHMENT LTD, United Kingdom (The) - GB