The Performance of Wood Decking after Five Years of Exposure: Verification of the Combined Effect of Wetting Ability and Durability

Forests

Miha Humar¹  Davor Kržišnik¹  Boštjan Lesar¹  Christian Brischke² 

[1] Biotechnical Faculty, Department for Wood Science and Technology, University of Ljubljana, Ljubljana SI1000, Slovenia;Wood Biology and Wood Products, University of Goettingen, D-37077 Goettingen, Germany;

关键词: decay;    decking;    inherent durability;    moisture performance;    resistance model;    service life;   

DOI  :  10.3390/f10100903

来源: DOAJ

【 摘 要 】

Wood is one of the most important construction materials, and its use in building applications has increased in recent decades. In order to enable even more extensive and reliable use of wood, we need to understand the factors affecting wood’s service life. A new concept for characterizing the durability of wood-based materials and for predicting the service life of wood has recently been proposed, based on material-inherent protective properties, moisture performance, and the climate- and design-induced exposure dose of wooden structures. This approach was validated on the decking of a model house in Ljubljana that was constructed in October 2013. The decay and moisture content of decking elements were regularly monitored. In addition, the resistance dose D_Rd, as the product of the critical dose D_crit, and two factors taking into account the wetting ability of wood (k_wa) and its inherent durability (k_inh), were determined in the laboratory. D_Rd correlated well with the decay rates of the decking of the model house. Furthermore, the positive effect of thermal modification and water-repellent treatments on the outdoor performance of the examined materials was evident, as well as the synergistic effects between moisture performance and inherent durability.

【 授权许可】

Unknown