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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
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Durability and Wood Protection Research

Project Title :  There is a need for improved wood treatments that impart durability to wood products without adversely impacting the environment
Project Number : FPL-4723-3
Status : TERMINATED
Start Date : 07-23-2007
End Date : 07-23-2012


View the 38 publications associated with this project.

Principal Investigator:
Carol A. Clausen

Non Technical Summary
PhotoConventional preservative systems, as well as copper-based CCA alternatives, face increasing environmental pressures. Environmental concerns for existing preservatives need to be addressed and their environmental impacts minimized. Due to its ease of treatment, southern pine is the dominant species used for preservative-treated wood. Improving the treatability of species that are difficult to penetrate with preservatives would expand the number of applications for treated wood products. Accelerated methods for evaluating the performance of new preservatives are needed to decrease the time it takes to bring new wood protection systems to the marketplace.


Objectives Summary
The objectives of this problem area are to evaluate the treatability and durability of underutilized wood species from the changing forest resource. Recycling methods will be developed for treated wood products to divert this waste material from landfills and enable the recycled/remediated wood fiber to be refabricated into value-added products. We will develop and evaluate methods that accelerate the process of assessing long-term performance of preservative products, develop nondestructive methods for quantitation of decay, and correlate an integrated series of laboratory and field tests. Minimizing leaching of preservative into aquatic environments and from above-ground applications will be assessed to reduce the impact of new wood protection systems.


Approach Summary
Efficacy of in-place remedial treatments will be evaluated on in-service wood products. Leaching studies will be conducted on new and existing preservatives in laboratory tests and in-service applications, such as wetland boardwalks. Underutilized wood species will be assessed for penetrability and retention of CCA and CCA-alternative preservatives with laboratory methods. Long-term field performance of the treatments is underway. New methods will be developed to assess penetration of preservative treatments into difficult-to-penetrate wood species. Remediation methods based on chemical leaching with acids and biological leaching with metal tolerant bacteria will be assessed for their ability to separate chemicals from the wood fiber.

Publications associated with this Project

Publication YearTitleDate Posted
2009A Comparison of the Durability of Two Stake Sizes in Southern Mississippi05/17/10
2012Above Ground Field Evaluation and GC-MS Analysis of Naturally Durable Wood Species08/28/12
2008Causes and control of wood decay, degradation and stain.05/17/10
2010Challenges in accelerated testing of durable wood products07/15/10
2009Chemical Yields from Low-Temperature Pyrolysis of CCA-Treated Wood06/26/09
2011Common questions and concerns from government users of industrial treated wood products03/13/12
2012Community analysis of preservative-treated southern pine (Pinus spp.) using terminal restriction fragment length polymorphism (T-RFLP) analysis. Part 1: Fungal field study06/08/12
2012Community analysis of preservative-treated southern pine (Pinus spp.) using terminal restriction fragment length polymorphism (T-RFLP) analysis06/11/12
2008Comparison of Methods for Evaluating Ground-Contact Copper Preservative Depletion04/27/09
2011Comparison of Wood Preservatives in Stake Tests 2011 Progress Report12/20/11
2010Effect of Treatment Pressure on Treatment Quality and Bending Properties of Red Pine Lumber01/10/11
2008Estimating preservative release from treated wood exposed to precipitation10/15/10
2010Field Testing of the Experimental Wood Preservative N'N-naphtaloylhydroxylamine: Five and Eight Years Results07/12/11
2012Field tests of the efficacy of zinc and fatty amine in preventing colonization by copper-tolerant fungi05/04/12
2011Gas chromatography-mass spectrometry (GC-MS) analysis of extractives of naturally durable wood03/12/12
2012Guide for In-Place Treatment of Covered and Timber Bridges03/26/12
2010Long-term Durability of CCA and ACA: How is 0.4 Doing?03/08/11
2011Methods for Mitigating the Environmental Risks Associated with Wood Preservatives04/26/12
2011Non-enzymatic depolymerization of cotton cellulose by fungal mimicking metabolites05/02/11
2011Observed relationships between wood density and solution uptake during pressure treatment03/13/12
2012Partial Dissolution of Preservative-Treated Wood with a Cellulose Solvent System of Lithium Chloride in N-Methyl-2-Pyrrolidinone09/17/12
2010Penetration of Boron from Topically Applied Borate Solutions07/15/10
2011Physical Deterioration of Preservative Treated Poles and Pilings Exposed to Salt Water10/23/11
2009Preservation Treatment for Wood Bridge Application02/09/10
2009Pressure Treatment with a Water-based Chlorothalonil Formulation05/17/10
2008Regional biodeterioration hazards in the United States10/15/10
2008Remediation and Recycling of WBP-treated Lumber for use as Flakeboard04/27/09
2011Reuse and Disposal04/26/12
2011Shading Aboveground L-joint and Lap-joint tests: Comparison of White Pine and Sugar Maple Test Assemblies10/17/11
2010Soil and Sediment Concentrations of Chromium, Copper, and Arsenic Adjacent to a Chromated Copper Arsenate-Treated Wetland Boardwalk09/07/10
2011Standardization of Naturally Durable Wood Species04/25/12
2010The Need for Performance Criteria in Evaluating the Durability of Wood Products05/16/11
2010The Usual Suspects: Fingerprinting Microbial Communities Involved in Decay of Treated Southern Yellow Pine03/08/11
2008Thermochemical remediation of preservative-treated wood10/15/10
2010Weatherability and Leach Resistance of Wood Impregnated with Nano-Zinc Oxide08/16/10
2010Wood Handbook, Chapter 15: Wood Preservation06/21/10
2012Wood preservative testing09/17/12
2009Wood Preservatives Choosing the right one05/17/10

Project Summaries last modified: 06-21-2011