CT scanning of capillary phenomena in bio-based materials [Elektronisk resurs]

• X-ray computed tomography (CT) is a powerful tool for the non-destructive study of dynamic moisture processes in wood and other bio-based materials. In the CT facilities at Luleå University of Technology, it is possible to study wood-moisture relations such as water absorption, drying and related material deformation under a temperature- and humidity-controlled environment.An increase in the use of bio-based materials in building construction has led to an increased interest in capillary phenomena in these materials, because of an increasing number of moisture-related damage in timber and hybrid-timber buildings. This article shows some examples of how different bio-materials used in construction interact with liquid water over time. The overall purpose has been to develop the CT technique as a powerful tool for the determination and visualization of capillary flow that can be a base for modelling and an increased understanding of moisture flow in new bio-based building materials.Early-stage observation of the behaviour of different traditional and new bio-based building materials shows that CT scanning, combined with image processing, has a high potential to be used in performing non-destructive and non-contact tests that can help to increase the knowledge of water-material interactions and develop building materials with an optimized performance. 

Ämnesord

Agricultural and Veterinary sciences  (hsv)

Agricultural Science, Forestry and Fisheries  (hsv)

Wood Science  (hsv)

Lantbruksvetenskap och veterinärmedicin  (hsv)

Lantbruksvetenskap, skogsbruk och fiske  (hsv)

Trävetenskap  (hsv)

Engineering and Technology  (hsv)

Mechanical Engineering  (hsv)

Other Mechanical Engineering  (hsv)

Teknik och teknologier  (hsv)

Maskinteknik  (hsv)

Annan maskinteknik  (hsv)

Träteknik  (ltu)

Wood Science and Engineering  (ltu)