Using Thermal Modification Technology to Add Value to Small-Diameter Logs from Underutilized Species: Final Report

Donahue, Patrick K
Aro, Matthew D
Xie, Xinfeng
Larkin, Glenn
2021-10
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NRRI-TR-2021-32.pdf (11.32 MB)
NRRI-TR-2021-32_AppendixA.pdf (3.71 MB)
NRRI-TR-2021-32_AppendixB.pdf (907.54 KB)
NRRI-TR-2021-32_AppendixC.pdf (3.03 MB)
NRRI-TR-2021-32_AppendixD.pdf (1.98 MB)

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https://hdl.handle.net/11299/225371
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Using Thermal Modification Technology to Add Value to Small-Diameter Logs from Underutilized Species: Final Report

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2021-10

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University of Minnesota Duluth

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Technical Report

Abstract

The project investigated mechanical, physical, and biological durability of thermally modified (170°C and 180°C) white ash (Fraxinus americana), red maple (Acer rubrum), yellow poplar (Liriodendron tulipifera), Eastern hemlock (Tsuga canadensis), and balsam fir (Abies balsamea) lumber. The test results demonstrate the effect of thermal treatment on the physical and mechanical properties. The biological durability results, tested according to American Wood Protection Association(AWPA) standards, suggest one hardwood (white ash), and two softwoods (balsam fir and eastern hemlock) may meet minimum service life thresholds for AWPA above-ground-use classification.

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The 4 appendices mentioned in the report (A-D) have also been attached to this record.

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Technical Reports
Materials & Bioeconomy

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NRRI Technical Report;NRRI/TR-2021/32

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U.S. Forest Service, grant no. 15-DG-11420004-082

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Donahue, Patrick K; Aro, Matthew D; Xie, Xinfeng; Larkin, Glenn. (2021). Using Thermal Modification Technology to Add Value to Small-Diameter Logs from Underutilized Species: Final Report. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/225371.

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