Abstract
AbstractThe effects of exposure to two decay fungi on the withdrawal capacity of stainless-steel screws inserted in the face and end grain of radiata pine specimens were assessed. Wetting followed by steam sterilization significantly increased capacity by 55–65%. Exposure to a brown (Fomitopsis ostreiformis) or white rot fungus (Pycnoporus coccineus) over 25 weeks was associated with 81–83% and 24–42% losses in withdrawal capacity, respectively. Comparison of experimental results with those predicted from design codes (Australia, Europe, US) showed an overestimation of the screw withdrawal capacity for the control specimens and highlighted the risk of strength degradation, especially in those specimens affected by brown rots.
Funder
The University of Queensland
Publisher
Springer Science and Business Media LLC
Subject
General Materials Science,Forestry
Reference29 articles.
1. ASTM International (2012) D1761-12. Standard test methods for mechanical fasteners in Wood. ASTM Stand
2. ASTM International (2016) D4442-16. Standard test methods for moisture content of wood
3. CEN (2004) Eurocode 5: design of timber structures - part 1–1. General - Common rules and rules for buildings
4. Clausen CA (2010) Chap. 14 - biodeterioration of Wood. Wood Handb - Wood as an Eng Mater USDA - Gen Tech Rep FPL-GTR-190 1–16. https://doi.org/10.1016/B0-7216-8239-1/50014-8
5. Curling SF, Winandy JE (2002) Relationships between and chemical composition of wood during incipient brown rot decay. For Prod J 52:34–39