Theses and Dissertations

Advisor

Khademibami, Laya

Committee Member

Shmulsky, Rubin

Committee Member

Montague, Iris

Committee Member

Kirker, Grant

Date of Degree

8-12-2026

Original embargo terms

Visible MSU Only 6 months

Document Type

Dissertation - Campus Access Only

Major

Forest Resources (Sustainable Bioproducts)

Degree Name

Doctor of Philosophy (Ph.D.)

College

College of Forest Resources

Department

Department of Sustainable Bioproducts

Abstract

This research explores a sustainable approach for utilizing downed pine trees, commonly resulting from natural disasters, in the production of Cross Laminated Timber (CLT). The study involved simulating storm damage by felling approximately 25 loblolly pine trees and exposing them to natural environmental conditions for periods of 0, 6, 9, and 12 months to replicate post-storm conditions. The felled trees were processed into dimension lumber and subsequently used to manufacture 3-ply CLT panels under controlled moisture content conditions. Both nondestructive evaluation (NDE) and destructive testing methods were employed to assess the structural integrity, mechanical properties, and long-term viability of the CLT panels. The NDE techniques included measuring acoustic velocity and dynamic modulus of elasticity, which provide insight into the wood’s stiffness and density while enabling quality assessment without damaging the material. Destructive evaluations, including third point bending tests, were conducted to determine the modulus of rupture and static modulus of elasticity, ensuring that the CLT panels manufactured from downed trees met industry standards for structural performance. The combination of these testing methodologies provided a comprehensive understanding of the effects of environmental exposure on timber quality and the potential for integrating downed trees into the engineered wood product market. The objective of this study was to demonstrate that downed trees can serve as a viable and cost-effective raw material for CLT production, supporting sustainable construction practices. By transforming storm-damaged trees into a valuable resource, this research not only reduces waste and promotes ecological conservation but also provides a low-carbon alternative to conventional construction materials such as concrete and steel. The outcomes of this study are expected to establish benchmarks for the use of downed trees in CLT manufacturing, highlight the associated environmental and economic benefits, and provide a foundation for future research on scalable industrial applications and market opportunities in sustainable construction materials.

Sponsorship (Optional)

U.S. Endowment for Forestry and Communities

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