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Design and Evaluation of Thin-Walled Hollow-Core Wood-Strand Sandwich Panels

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Part of a long-term goal of developing a sustainable composite panel that meets both structural and energy performance requirements in building construction applications, this study discusses the development of a thin-walled wood-strand 3D core element that shows promise for a variety of panelized construction applications, such as in a building envelope. Sandwich panels take advantage of the lightweight corrugated core sandwiched between stress skin faces acting similar to an I-beam. Specific bending stiffness of sandwich panels fabricated with ponderosa pine strands was significantly higher than average values of commercially produced composite panels of equivalent thickness (141–156% and 120–133% stiffer than oriented strand board (OSB) and 5-ply plywood respectively). Compared to OSB of equivalent thickness, sandwich panels require 40% less wood strands by weight, which also means lower usage of resin. This basic concept creates tremendous flexibility in designing panelized wall, floor and roof elements for building envelope applications.
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Document Type: Research Article

Publication date: 01 August 2015

This article was made available online on 23 July 2015 as a Fast Track article with title: "Design and Evaluation of Thin-Walled Hollow-Core Wood-Strand Sandwich Panels".

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  • The Journal of Renewable Materials (JRM) publishes high quality peer reviewed original research on macromolecules and additives obtained from renewable/biobased resources. Utilizing a multidisciplinary approach, JRM introduces cutting-edge research on biobased monomers, polymers, additives (both organic and inorganic), their blends and composites. It showcases both fundamental aspects and new applications for renewable materials. The fundamental theories and topics pertain to chemistry of biobased monomers, macromoners and polymers, their structure-property relationship, processing using sustainable methods, characterization (spectroscopic, morphological, thermal, mechanical, and rheological), bio and environmental degradation, and life cycle analysis. Demonstration of use of renewable materials and composites in applications including adhesives, bio and environmentally degradable structures, biomedicine, construction, electrical & electronics, mechanical, mendable and self-healing systems, optics, packaging, recycling, shape-memory, and stimulus responsive systems will be presented.
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