The physical and mechanical properties of particleboard panels were evaluated relative to various loading levels nanocellulose (NC) boric acid (BA) in the urea-formaldehyde (UF) resin used for panel production. results showed that NC BA reinforcement substantially affected performance panels. It was determined using 3% afforded best thickness swelling (TS), water absorption (WA), moisture conte...

Acetylation is a well-established process to improve dimensional properties of wood and resistance fungi attack. This study was carried out due limited studies on the effect acetylation mechanical properties, thermal stability, microstructural aspects wood. Wood blocks, (each 20×20×60 mm) Obeche were acetylated with acetic anhydride at 120 °C for 60, 120, 180, 240 300 minutes. The microstructur...

The most widespread wood species in the Portuguese forest and widely utilized are maritime pine (Pinus pinaster) eucalyptus (Eucalyptus globulus Labill). In case of eucalyptus, except for pulping sector, it might have limited usage due to drying issues low permeability. Microwave (MW) treatment is a technology that has been used improve species’ Therefore, present paper aimed evaluate MW both i...

The manufacturing processes of rubber crumb–wood particle reinforced cement based composites (RWCC) which shortened the pressing cycle and enhanced the properties were completely investigated. Meanwhile, optimal processing conditions as well as properties of strength were tested to validate the predicted variables and properties. Mechanism effects of interacting process variables [density, dura...

Engineered wood products for structural use must meet minimum strength and stiffness criteria. This represents a major challenge for the industry as the mechanical properties of the wood resource are inherently variable. We report on a case study that was conducted in a laminated veneer lumber (LVL) mill in order to test the potential of an acoustic sensor to predict structural properties of th...

The topic of the article focuses on the evaluation of selected technological factors and their influence on resulting elasticity modulus of concrete. A series of various factors enter into the manufacturing process which, more or less, influences the elasticity modulus. This paper presents the results of concrete in which the influence of water coefficient and the size of maximum fraction of th...

Aim: To assess the physical and mechanical properties of plaster of Paris (POP) bandage cast used as a splinting and casting materials. Materials and Methods: POP casts were divided into three Groups A, B and C with 2, 3 and 8 layer for POP bandage, respectively (n=6 in each group). Handling characters, technical easiness or difficulties, setting time, weight, diameter and thickness of the cast...

Wood products are required high degrees of structural performance and reliability in case of construction material. However, mechanical properties and moisture content of wood vary widely because of its highly anisotropic characteristics. Therefore, accurate nondestructive grading systems are desirable for wood industries. We developed a fast online grading apparatus for sawn lumber based on ne...

Modulus of elasticity is one of the important parameters of construction materials, which considerably influence their deformation properties and which can also be determined by means of non-destructive test methods like ultrasonic pulse method. However, measurement results of ultrasonic pulse methods are influenced by various factors, one of which is the natural frequency of the transducers. T...

in this study, the physical properties (size, mass, volume, density, geometric diameter, sphericity and friction coefficient on galvanized steel and wood surface) and some mechanical properties of flesh and skin tissue (modulus of elasticity, bioyield stress, yield strain and toughness) for small, medium and large melons of ghasri variety were determined. means comparison was done by duncan’s m...