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Decay susceptibility of rain exposed wood joints – comparison of two decay models

Fredriksson, Maria LU ; Wadsö, Lars LU and Johansson, Peter LU (2014) XIII International Conference on Durability of Building Materials and Components, 2014 p.204-211
Abstract
Wood is susceptible to decay if it is exposed to high moisture contents and certain temperatures during long periods of time. In rain exposed structures, decay often starts close to joints since the joints can act as water traps where water stays after rain events. Service life prediction models for outdoor wood structures require knowledge about the moisture and temperature conditions in the wood as well as models that describe the degradation under these conditions. Recently, several models that describe decay of wood structures have been presented. In the present study, the results from two of these decay models from literature were compared. Moisture content data from a previous study where moisture content profiles were monitored in... (More)
Wood is susceptible to decay if it is exposed to high moisture contents and certain temperatures during long periods of time. In rain exposed structures, decay often starts close to joints since the joints can act as water traps where water stays after rain events. Service life prediction models for outdoor wood structures require knowledge about the moisture and temperature conditions in the wood as well as models that describe the degradation under these conditions. Recently, several models that describe decay of wood structures have been presented. In the present study, the results from two of these decay models from literature were compared. Moisture content data from a previous study where moisture content profiles were monitored in joints of different designs were used as input data in the models. In general, both models identified the same points as critical points in terms of high decay susceptibility. However, the models gave somewhat different results in points where drying occurred between the watering periods. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
Wood, durability, decay model, moisture content
pages
204 - 211
conference name
XIII International Conference on Durability of Building Materials and Components, 2014
language
English
LU publication?
yes
id
fcbcffef-8590-4126-920f-4662f826dcf8 (old id 4672413)
date added to LUP
2014-09-24 11:54:32
date last changed
2016-07-15 12:36:42
@misc{fcbcffef-8590-4126-920f-4662f826dcf8,
  abstract     = {Wood is susceptible to decay if it is exposed to high moisture contents and certain temperatures during long periods of time. In rain exposed structures, decay often starts close to joints since the joints can act as water traps where water stays after rain events. Service life prediction models for outdoor wood structures require knowledge about the moisture and temperature conditions in the wood as well as models that describe the degradation under these conditions. Recently, several models that describe decay of wood structures have been presented. In the present study, the results from two of these decay models from literature were compared. Moisture content data from a previous study where moisture content profiles were monitored in joints of different designs were used as input data in the models. In general, both models identified the same points as critical points in terms of high decay susceptibility. However, the models gave somewhat different results in points where drying occurred between the watering periods.},
  author       = {Fredriksson, Maria and Wadsö, Lars and Johansson, Peter},
  keyword      = {Wood,durability,decay model,moisture content},
  language     = {eng},
  pages        = {204--211},
  title        = {Decay susceptibility of rain exposed wood joints – comparison of two decay models},
  year         = {2014},
}