This study was performed to characterize and understand static loading capacities of the T-shaped, end-toace, mortise-and-tenon joints in pine plywood and oriented strandboard (OSB), and to develop mechanical models to predict its tensile, moment, and torsional resistance capacities. Results of the study indicated that the tensile resistance of a stapled-and-glued mortise-and-tenon joint in pine plywood and OSB ranges from 505 to 1933 lb. and 306 to 845 lb., respectively; the moment resistance ranges from 780 to 4428 lb.-in. and 612 to 2309 lb.-in., respectively; and the torsional resistance ranges from 598 to 2292 lb.-in. and 439 to 1260 lb.-in., respectively. The mechanical models proposed in this study were experimentally validated. The tensile, moment, and torsional resistances of a T-shaped, end-toace, stapled-and-glued, mortise-and-tenon joints can be estimated based on knowing basic material properties of single-staple tensile, lateral shear resistance, and material end-toace glue bonding tensile strength and shear strength.

This investigation focuses on the production, strength properties, and marketability of a new ultra stiff wood composite. The basis of the examination is to compare strength properties such as, Modulus of Rupture, Modulus of Elasticity, Work to Max Load, and Density with currently available products. The final analysis of the ultra stiff product suggested that this product would compete favorably in today’s market due to the strength properties of the product. Although the current hot-pressing method is not economical for mass production, other ways of pressing can be utilized. It is noted in this research that the wood moisture content can influence MOE, MOR, and density properties. By manipulating and controlling the press cycle and the moisture content, a competitive product was produced.

The purpose of this research was to quantify properties of strandboard panels manufactured with various preservatives at loading levels effective against native termites. Panels were manufactured using nine different formulations. The method of preservative addition was also examined for some preservative formulations, increasing the total number of preservative treatments to twelve. Panels were manufactured with one target retention for each preservative treatment. An effective preservative loading relative to termites was established by previous studies or referencing current standards. Mechanical testing performed included static bending and internal bond. Physical testing included water absorption, thickness swell, and linear expansion. Few treatments met the Canadian standards for strandboard, but several preservatives performed well. Copper naphthenate, bifenthrin, and copper betaine each deserve further investigation to optimize manufacturing variables to meet required mechanical and physical properties.

<p><p>Newbeam Sweden AB är ett ganska ungt företag som genom deras patent har börjat kunna pressa unika träkompositer i 3 dimensioner. Företaget ligger i startgroparna med sin första tillverkningslina som skall öppnas i Söderhamn, Hälsingland.</p><p>De själva har satsat mycket mot byggnadsindustrin. Min uppgift i detta arbete har varit att undersöka andra marknader med deras profi lpressade träkompositer som grund. Inriktningen blev butiksinredningar som ett resultat av researcharbetet som gjordes.</p><p>Intervjuer och undersökningar gav en bild av hur viktigt det är med användarvänlighet samt enkelhet och de två orden blev mitt motto arbetet igenom.</p><p>Resultatet av detta kom att bli lite mer än bara butiksinredningar.</p></p> / <p>Newbeam Sweden AB is a fairly young company which with their new patent are able to press unique wood composite in 3 dimensions. The company are about to start thier fi rst manufacturing line in Söderhamn, Hälsingland.</p><p>Their main target is to make components for house-constructions. My objective in this project has been to investigate other fi elds of interest with their 3 dimensional wood composite beams as buildingblocks.</p><p>From the research that was made, a focus towards stores and their furnish equipment came to be the concentration. Interviews and investigations gave a good picture of how important it is to off er easy-to-use and simplicity in constructions. Theese words became my motto during this project.</p><p>The result of my work came to be a little more than furnish equipment for stores.</p>

Newbeam Sweden AB är ett ganska ungt företag som genom deras patent har börjat kunna pressa unika träkompositer i 3 dimensioner. Företaget ligger i startgroparna med sin första tillverkningslina som skall öppnas i Söderhamn, Hälsingland. De själva har satsat mycket mot byggnadsindustrin. Min uppgift i detta arbete har varit att undersöka andra marknader med deras profi lpressade träkompositer som grund. Inriktningen blev butiksinredningar som ett resultat av researcharbetet som gjordes. Intervjuer och undersökningar gav en bild av hur viktigt det är med användarvänlighet samt enkelhet och de två orden blev mitt motto arbetet igenom. Resultatet av detta kom att bli lite mer än bara butiksinredningar. / Newbeam Sweden AB is a fairly young company which with their new patent are able to press unique wood composite in 3 dimensions. The company are about to start thier fi rst manufacturing line in Söderhamn, Hälsingland. Their main target is to make components for house-constructions. My objective in this project has been to investigate other fi elds of interest with their 3 dimensional wood composite beams as buildingblocks. From the research that was made, a focus towards stores and their furnish equipment came to be the concentration. Interviews and investigations gave a good picture of how important it is to off er easy-to-use and simplicity in constructions. Theese words became my motto during this project. The result of my work came to be a little more than furnish equipment for stores.

Thesis (M.S.) in Civil Engineering--University of Maine, 2009. / Includes vita. Includes bibliographical references (leaves 115-121).

Thesis (M.S.) in Civil Engineering--University of Maine, 2001. / Includes vita. Includes bibliographical references (leaves 226-228 (v. 1)).

Thesis (Ph. D.)--University of Canterbury, 2008. / Typescript (photocopy). Includes bibliographical references. Also available via the World Wide Web.

Le hêtre est une essence très répandue sur le territoire français et plus particulièrement dans la région Grand-Est. Toutefois, son bois est peu exploité, notamment pour des utilisations en conditions extérieures en raison de sa faible durabilité et son instabilité dimensionnelle. Pour favoriser et développer son utilisation, il est nécessaire de le traiter afin de limiter sa reprise en humidité et de le protéger contre les champignons de pourriture. Par ailleurs, la réglementation actuelle sur les produits de traitement du bois impose la mise au point de solutions alternatives respectueuses de l’environnement et de la santé. Dans ce cadre, les travaux développés durant cette thèse visent la valorisation du hêtre en tant que matériau via sa protection par un traitement « non-biocide », la furfurylation. Cette méthode consiste à polymériser in situ de l’alcool furfurylique dans le bois de hêtre. La mise au point du procédé a permis d’aboutir à du hêtre composite dont la durabilité et la stabilité dimensionnelle sont nettement améliorées. D’autre part, le hêtre est une essence feuillue pour laquelle la fraction hémicellulosique est riche en pentoses et plus précisément en xylose, précurseur de furfural. Des travaux ont donc été menés pour produire du furfural par hydrodistillation acide à partir de connexes issus de l’industrie de la première transformation du hêtre. Le furfural a ensuite été réduit en alcool furfurylique par transfert d’hydrogène. Les résultats prometteurs obtenus montrent qu’il est possible de mettre en place une filière locale alliant le hêtre comme source de molécules furaniques et le bois de hêtre comme matériau / Beech is a wood species present in the French territory, particularly in the Grand-Est region. However, beech is a under used wood, especially for outdoor uses, because it is non durability and it is dimensional unstability. To promote and develop its use, it is necessary to limit its recovery in moisture and treat to protect it against fungi decay. Futhermore, current regulation on wood treatment products imposes the development of alternative wood treatments more respectful of the environment and health. In this context, the work developed during this thesis is focused on valorisation of beech as a material through its protection by a “non-biocide” treatment, furfurylation. This method consists in an polymerisation in situ by heating a furfuryl alcohol solution into beech solid wood. The development of process led to a bio-based beech composite with significantly improved durability and dimensional stability.On the other hand, beech is a hardwood species in which the hemicellulosic fraction is rich in pentoses, and more precisely in xylose, precursor of furfural. Work has been done to produce furfural by acidic steam distillation, from beech primary wood processing by products. This molecule is then chemically reduced to furfuryl alcohol by hydrogen transfer.These promising results to show that it is possible to set up a local production combining beech as a local source of furanic molecules and beech wood as a solid material

This thesis examines the possibility of creating composite mainly from waste materials. The matrix of this composite was prepared from fly ash type F, which was activated by sodium water glass. Wood chips were used as a filler. This thesis includes theoretical and experimental parts. The theoretical part deals with the most important issues of wood composites with an inorganic matrix as well as basic components of investigated composite, ie alkaline activated fly ash and wood. In the experimental part, the fly ash pastes were prepared, from which the most suitable mixture was chosen for the composite preparation. Properties of wood composite with alkali activated fly ash matrix were investigated depending on the dose of wood chips.