Wood and wood-based materials are widely used in the construction industry world. The sustainable renewable nature of wood is seen as an important advantage contrast to non-renewable resources such aluminum, steel, concrete, plastic. In order protect advantages eliminate / reduce its disadvantages, plywood, particle board, fiber LVL, CLT, plastic composites etc. new engineering products produce...

OBJECTIVES To study work exposure and respiratory symptoms in New Zealand plywood mill workers. METHODS Personal inhalable dust (n = 57), bacterial endotoxin (n = 20), abietic acid (n = 20), terpene (n = 20) and formaldehyde (n = 22) measurements were taken and a respiratory health questionnaire was administered to 112 plywood mill workers. RESULTS Twenty-six percent of the dust exposures e...

In this study, combinations of bisphenol A diglycidyl ether (BPADGE) and polyethylenimine (PEI) were investigated as effective crosslinking agents for soy protein isolate (SPI) at room temperature. Three-ply plywood panels prepared with the SPI-BPADGE-PEI adhesives via a cold press process evaluated their water resistance shear strengths in accordance requirements American National Standard Har...

This study aimed to verify technical potential of using waste from wood veneers and plywood as a raw material for the production MDP. The variance analysis panels density was carried out. Physical-mechanical properties were evaluated by comparing them with international standards variance. averages subjected covariance, at level 5% probability. Finally, Pearson’s correlation between performed. ...

due to the need to find new protein sources with considering the fact that the bitter vetch seed has high levels of protein content, physicochemical and mechanical properties of bitter vetch seed and functional properties of its flour were evaluated in this study. the effects of altering the ph on protein solubility, foaming capacity, foaming stability, emulsion capacity and emulsion stability ...

In this study, fire-retardant plywood was fabricated using a simple guanidine phosphate (GP) impregnation treatment of the veneers, and influence on flame resistance bonding strength fully investigated. The results showed that GP modification could effectively endow with excellent fire smoke-suppression effect. When 10% solution applied, limiting oxygen index (LOI) impregnated wood up to 37%, w...

Abstract The static lateral load–slip behavior of a single-shear plywood-to-plywood single-staple connection (SPSC) was investigated experimentally. A mechanics-based approach used to develop mechanical models for deriving estimation equations critical loads SPSCs based on failure modes staple legs and member materials developed during loading process. Experimental results indicated that the ca...

Even today, a detailed description of the damage progress in wood or wood materials under tensile loading is still a challenge. The complexity of the damage behaviour results from the various mechanisms occurring simultaneously at several length scales. So far, few studies focused on mechanical behaviour of wood or wood materials by analysing acoustic emission (AE), although AE can provide info...

The moisture and dimensional behaviors of a nail-laminated timber (NLT)–concrete slab composed an NLT–plywood composite topping concrete are monitored for 385 days. is developed using as flexural elements such floors. humidity control wood gently introduces significant fluctuations under the ambient relative into slab, in result changes. equilibrium content increases from 6.7% to 15.3% during m...