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Trä som fasadmaterial – behandling och beständighet
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
2012 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Since prehistoric time man has used wood to build their environment. The material’s availability

combined with its good mechanical properties has often made it the material of choice. Like all

materials exposed to natures degradative processes the properties of wood decreases over time.

Rot, UV radiation and attacks by insects and pests damage wood if not protected. Since we want

what we build to consist, optimizing our building materials durability is of great interest.

Techniques and methods for increasing the endurance of wood have been developed in several

different places and for a long time. Three reinvented methods to modify wood and its properties

are heat treatment, acetylation and furfurylation. This work examines the durability problems that

occur to wood used as façade material, and methods for increasing the durability are identified.

By conducting a literature review three, in Sweden only small-scale established, methods of

modifying wood are being examined. Most of the treatment methods increase the biological

resistance in exchange for weakened mechanical properties. Modified wood often has similar

characteristics as conventional pressure-treated wood, why a transition from environmentally

hazardous pressure-treatment to wood modification would be an environmental benefit. In

connection with the work the design of a single family home was made. By applying the results

encountered in the work of wood treatments, we found that the most appropriate choice of

façade material for the single family home is furfurylated wood. There is currently no large-scale

commercial production of modified wood in Sweden. Since we have a good access to forests in

Sweden, there is a strong tradition of timber construction and there are environmental benefits in

reducing the use of pressure-treated wood, we see great potential in developing a Swedish

production of modified wood.

Place, publisher, year, edition, pages
2012. , 110 p.
Keyword [sv]
Trä, Beständighet, Värmebehandling, Furfurylering, Acetylering
National Category
Civil Engineering
URN: urn:nbn:se:kth:diva-102385OAI: diva2:552575
Subject / course
Built Environment
Educational program
Master of Science in Engineering - Urban Management
Available from: 2012-10-01 Created: 2012-09-14 Last updated: 2012-10-01Bibliographically approved

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