Preservation and improvement of wood
| Title | Συντήρηση και Βελτίωση Ξύλου / Preservation and improvement of wood |
| Code | 71Ε |
| Faculty | Agriculture, Forestry and Natural Environment |
| School | Forestry and Natural Environment |
| Cycle / Level | 1st / Undergraduate |
| Teaching Period | Winter |
| Common | No |
| Status | Active |
| Course ID | 600019465 |
Programme of Study: PPS Tmīmatos Dasologías kai Fysikoý Perivállontos (2020-sīmera)
Registered students: 10
| Orientation | Attendance Type | Semester | Year | ECTS |
|---|---|---|---|---|
| Elective Courses | Compulsory Course belonging to the selected specialization (Compulsory Specialization Course) | 7 | 4 | 2 |
| Elective Courses | Elective Course belonging to the selected specialization (Elective Specialization Course) | 7 | 4 | 2 |
| Elective Courses | Elective Course belonging to the selected specialization (Elective Specialization Course) | 7 | 4 | 2 |
| Elective Courses | Elective Course belonging to the selected specialization (Elective Specialization Course) | 7 | 4 | 2 |
| Elective Courses | Elective Course belonging to the selected specialization (Elective Specialization Course) | 7 | 4 | 2 |
| Elective Courses | Elective Course belonging to the selected specialization (Elective Specialization Course) | 7 | 4 | 2 |
| Academic Year | 2023 – 2024 |
| Class Period | Winter |
| Faculty Instructors | |
| Class ID | 600232033
|
Class Schedule
| Building | Δασολογίας (Φοίνικας) - κτίριο δ |
| Floor | Ισόγειο |
| Hall | ΑΜΦΙΘΕΑΤΡΟ "ΜΠΑΣΙΩΤΗΣ ΚΩΝΣΤΑΝΤΙΝΟΣ" (ΦΟΙΝΙΚΑΣ/ΑΜΦ. Δ1) (244) |
| Calendar | Δευτέρα 14:00 έως 16:00 |
Type Of Offer
- Disciplinary Course
Course Type 2021
Specific Foundation
Course Type 2011-2015
Knowledge Deepening / Consolidation
Mode of Delivery
- Face to face
Digital Course Content
- e-Study Guide https://qa.auth.gr/en/class/1/600232033
- eLearning: https://elearning.auth.gr/course/view.php?id=13413
Erasmus
The course is also offered to exchange programme students.
Language of Instruction
- Greek (Instruction, Examination)
- English (Instruction, Examination)
Prerequisites
Required Courses
- 23Υ Wood Structure and Properties
- 46Υ Chemistry & Wood Chemical Products
General Prerequisites
None.
Learning Outcomes
Upon successful completion of the course, students will know:
• on the ways of preserving and protecting wood and wooden constructions and the factors from which they are at risk (biotic and abiotic factors).
• the methods of impregnation and the impregnating substances used (categories, types, characteristics, advantages and disadvantages, etc.),
• the interaction relationships of the wood (chemical composition, anatomical characteristics, etc.) with the impregnating substances,
• the way of choosing impregnation methods, the preparation of the wood for the impregnation process,
• the ways of protection through thermal, chemical, mechanical modification of the wood mass.
• the mode of operation, the rules to be applied, the required facilities and equipment of the impregnation units.
• for the application of flame retardants and the evaluation of the effectiveness of all maintenance methods.
General Competences
- Apply knowledge in practice
- Work autonomously
- Work in teams
- Work in an international context
- Work in an interdisciplinary team
- Respect natural environment
- Advance free, creative and causative thinking
Course Content (Syllabus)
Natural durability of wood, factors affecting the natural durability of different wood species, and in general, factors affecting wood and its products integrity, biological threats to wood in service (bacteria, fungi, wood-destroying insects, marine wood-destroying microorganisms), and abiotic factors that degrade wood. Importance and impact of anatomical features, permeability, hydrophobicity and chemical properties/chemical composition of wood on the application of impregnation and/or other protection methods and their degree of protection. Relations between wood and fluids (movement of fluids during the process of drying, steaming, impregnation, improvement treatments, etc.). Ways and characteristics of protective impregnation (types of protective and improving substances, limitations and their evolution over time, methods of thermal and chemical technologies involved, criteria for choosing a protection/maintenance method, means, facilities, technical conditions, operating rules of industrial units). Safety measures and protection of health and the environment during the application of protective substances to wood, consequences of impregnation on the properties and uses of wood. Trends in the development of impregnating substances, applied technologies and preservation methods. Application of wood mass modification methods (thermal, hydrothermal, chemical, thermomechanical, surface modification, etc.), characteristics, treatment conditions, factors affecting the effectiveness of each method, perspectives and limitations. Certification of impregnated wood/protected/modified wood, assessment of effectiveness of the preservation method, control of properties of modified wood samples (control of biological resistance, dimensional stability, fire resistance, etc.). Fire protection of wood and ways to improve its dimensional stability. Conservation/conservation of heritage wood, preservation and conservation of water-saturated archaeological wood.
Keywords
weathering, steaming, impregnation, wood, durability, decay, preservation, protection, improvement, modification, treatment
Educational Material Types
- Notes
- Slide presentations
- Video lectures
- Interactive excersises
Use of Information and Communication Technologies
Use of ICT
- Use of ICT in Course Teaching
- Use of ICT in Laboratory Teaching
- Use of ICT in Communication with Students
Description
Modern teaching methods are utilized: enriched presentation with video projection, group work, experiential activities and workshops, educational visit, presentation of good practices and case studies.
Course Organization
| Activities | Workload | ECTS | Individual | Teamwork | Erasmus |
|---|---|---|---|---|---|
| Lectures | 26 | 0.9 | |||
| Laboratory Work | 6 | 0.2 | |||
| Reading Assigment | 26 | 0.9 | |||
| Exams | 2 | 0.1 | |||
| Total | 60 | 2 |
Student Assessment
Description
The final grade is determined by the final examimation and/or a written work which is assigned after consultation with the teacher.
More details in the course webpage (e-learning)
Student Assessment methods
- Written Exam with Short Answer Questions (Summative)
- Written Assignment (Summative)
- Oral Exams (Formative)
- Performance / Staging (Summative)
Bibliography
Course Bibliography (Eudoxus)
Βουλγαρίδη H. Συντήρηση-Βελτίωση του Ξύλου.(Πανεπιστημιακές παραδόσεις-Σημειώσεις)
Additional bibliography for study
• Blanchette, R. A., Nilsson, Th., Daniel, G., & Abad, A. (1990). Biological degradation of wood. In Archaeological Wood: Properties, Chemistry and Preservation (Eds: R.M. Rowell & R.J. Barbour), Adv. Chem. Ser. No 225, American Chemical Society, Washington DC. pp.141-174.
• Tsoumis, G. (1991). Science and Technology of Wood: Structure, Propertties, Utilization. Van Nostrand Reinhold, New York. Φιλίππου, Ι. (2014). Χημική Τεχνολογία του Ξύλου. Θεσσαλονίκη.
• Voulgaridis, E. (1980). Physical Factors Affecting the Performance of Water Repellents Applied to Wood. Doctoral Thesis, University College of North Wales, Bangor, UK.
• Voulgaridis, E. (2004). Protection of wood in service from fungal and insect attack. (Unpublished Report) Aristotle University, Thessaloniki. Voulgaridis, E. V., & Banks, W. B. (1981). Degradation of wood during weathering in relation to water repellent long term effectiveness. J. Inst. Wood Sci. 9(2): 72-83.
• Hill C.A.S. 2006. Wood Modification: Chemical, Thermal and Other Processes. John Wiley & Sons, Ltd, 2006, DOI:10.1002/0470021748.
• Johansson D., 2008. Heat Treatment of Solid Wood Effects on Absorption, Strength and Colour. Doctoral Thesis, Luleå University of Technology, 2008:53|p.142.
• Johansson D., 2005. Strenght and Colour Response of Solid Wood to Heat Treatment. Licentiate thesis. Luleå University of Technology. 2005:93.
• Kamperidou V., Barboutis I. and V. Vasileiou, 2014. Influence of thermal treatment on mechanical strength of Scots Pine (Pinus sylvestr is L.) wood. Wood Research 59 (2): 2014 373-378.
• Kamperidou V. and I. Barboutis, 2012. Effect of thermal treatment on colour and hygroscopic properties of poplar wood. International Conference of Ambienta 2012, Zagreb.
• Kartal S., Hwang W.J. and Y. Imamura, 2007. Water absorption of boron-treated and heat-modified wood. J Wood Sci (2007) 53:454–457.
• Kocaefe D., Poncsak S. and Y. Boluk, 2008. Effect of thermal treatment on the chemical composition and mechanical properties of Birch and Aspen. BioResources 3(2), 517-537.
Last Update
29-08-2024
