The construction industry has been seeking materials that have a lower impact on the built environment. For this reason, wood has become an attractive option due to its natural and renewable properties. In the Northeast region of Brazil, the Caatinga biome stands out for its biodiversity as the only entirely national biome. However, the physical and mechanical properties of local...
This study investigated the vertical and radial variability of wood acoustical and physical properties in Ailanthus altissima (ailanthus tree), a species with potential applications in musical instrument construction. However, there is limited information about the variation within the stem in these properties, which is essential for assessing its suitability in acoustically...
Pernambuco wood is the most used material for making professional violin bows. Since the 18th century, it has been known as the best wood for this purpose. However, it is classified as an endangered species. Some researchers looking for alternative woods for bow making have pointed out that ipe wood may have desirable features for making violin bows. Therefore, the objective of...
The influence of environmental conditions on wood material properties is known. Temperature is one of them and its effect on poplar wood has been examined in a limited way which this study tried to figure out this issue in a limited context. The influence of heat treatment (110 °C, 160 °C, and 210 °C for 3 h and 6 h) on the density, ultrasonic wave velocity, modulus of rupture...
Shrinkage is a key factor in generating internal stresses and deformations within wood structures, especially due to the anisotropic nature of wood, which causes direction-dependent stress responses and must be considered to accurately predict the mechanical behaviour of cylindrical elements. However, its influence on the stress distribution in cylindrical wood elements remains...
Several methods are implemented to improve the quality and productivity of Eucalyptus plantations, including genetic improvement and seedling fertilization. These practices, combined with the favorable soil and climate conditions across much of Brazil, have enabled high yield forest production.These plantations supply raw materials for a wide range of industrial uses, notably the...
In this study, the bioactive properties of Ganoderma adspersum, a wood-decaying mushroom, were investigated. The study was designed in three steps: an experimental study, optimization of extraction conditions, and determination of bioactive properties of the optimum extracts. The main research problem was to determine the most effective extraction conditions to maximize the...
The cost of wood and non-wood lignocellulosic materials continues to escalate yet the demand keeps rising at the face of the climate change problem aggravated by unsustainable tree removal across the world. Lignocellulose waste is unavoidably generated during construction. The viability of producing decorative furniture items from recoverable wood wastes from a construction site...
This study provides a preliminary mechanical characterization of minimally processed Acacia dealbata logs to assess their potential valorisation as a by-product of invasive species management. A total of 45 logs (90-143 mm diameter) from two harvest seasons groups, spring (17 logs, 2.0 m) and winter (28 logs, 2.4 m), were visually selected and evaluated for dynamic modulus of...
The search for sustainable building construction has driven the use of mass timber products as an alternative to reinforced concrete and steel structural components. In this context, the present work reports on the structural behavior of adhesive-free laminated timber products made of fast-growing Uruguayan pine (Pinus taeda). For manufacturing, C14 timbers were used. The...
Glued laminated timber is an alternative gaining prominence in the Brazilian construction field. As a result, industries seek ways to improve the quality of their products, focusing on the wood used, the adhesive, and the manufacturing process. The aims of this study are to evaluate the effect of the preservative treatment chromated copper arsenate (CCA) as a preservative...
Timber’s growing prominence in both new construction and heritage rehabilitation demands reliable methods to evaluate structural safety. However, most current load-testing protocols target concrete and overlook key timber-specific characteristics such as creep, delayed deflection, and service classes. This study addresses these gaps by investigating a 1:2 scale two-story timber...
Eucalyptus urophylla (ampupu) is one of the most commonly cultivated species in Brazil for industrial scale particleboard production. This study investigates the reuse of Eucalyptus urophylla sawmill waste as a raw material for particleboard manufacturing, addressing the growing need for sustainable material solutions. Without prior particle homogenization, two manufacturing...
Wood-plastic composites have emerged as important new wood-based materials due to their environmental benefits, economic advantages, and recyclability. However, when used outdoors, they are exposed to fluctuating moisture and temperature conditions. Understanding the effects of climate aging on these composites is essential.This study investigates the relationship between...
The quality of glued or coated wood largely depends on the strength of the bond between the adhesive or coating and the wood surface. The roughness of the surface plays a crucial role, as it significantly impacts both the wettability and the effectiveness of the bond. This study was carried out to provide information on the surface roughness of Abies alba (silver fir) planed...
The jointing allows obtaining a single cutting orbit, for all knives installed on the periphery of a rotary knife holder. An emery stone is worked over the cutting edge when they are in motion, which produces a bevel, which is formed according to level of the rectification. Accurate selection of the bevel allows a uniform cut of the surface of the lumber. The objective of this...
Chile plays a significant role in global sawn wood production, ranking 14th in total roundwood and 10th in coniferous sawn wood production in 2022, contributing significantly to the demand for wood products. In the same year, the country exported wood products worth a remarkable $US 6.682 million of, underscoring its importance in the global wood industry. Despite its prominence...
This study investigated the potential use of Scots pine cones as an alternative raw material to larch wood chips for particle board production. Due to the increasing scarcity of forest resources, exploring alternative raw material for the forest industry has gained importance in in recent years. Particle boards were produced in laboratory conditions by blending industrial wood...
This study presents an innovative approach to wood mineralization through various pretreatments, focusing on the application of chemically treated sawdust as aggregates in fly ash-based geopolymer composites. Eucalyptus wood sawdust underwent five distinct treatments: cold water washing (CWW), hot water washing (HWW), sodium hydroxide washing (SHW), calcium hydroxide...
Studying the combustibility and physical‒mechanical properties of wood is important for recommending its use in construction. The objective of this study was to evaluate the combustibility, as well as the physical and mechanical properties, of twelve Brazilian Amazonian woods. Species. For each species, the combustibility parameters, fire exposure test, residual mass, loss mass...
Studying the radial variation of wood density, an essential biophysical property that reflects the quality of commercial species in tropical forests, is crucial. Understanding how these variations relate to wood anatomy provides valuable insights. In this study, we evaluated fiber morphology and radial density variation using X-ray densitometry in two commercial species from...
Cross-laminated timber is an industrialised wood product that has increased exponentially in its use in the construction industry due to its structural efficiency, lightness, sustainable character and economic competitiveness. Thus, in recent years, this product is being used for the construction of collective buildings (high-rise buildings) throughout Europe, developing a new...
Noise which could be defined as disturbing sound, is becoming a major problem depending with developing technology. Controlling the noise helps raising the quality of life to higher levels. Although the intensity of the noise is not at a level that will affect human health, it should be reduced or eliminated, for better life standart. Due to the adverse effects of the noise level...
Studies on wood durability have highlighted the use of new environmentally friendly substances. In this sense, research carried out with Amazonian forest species is extremely important for the discovery of new bioactive substances from durable wood and its residues. The aim of this study was to evaluate the antitermitic and antifungal potential of extracts obtained from...
The homogeneity of wood growth ring width is associated with greater rigidity and mechanical strength of the material. Therefore, understanding ring width homogeneity would be useful for visually grading sawn wood for structural applications. However, the effect of homogeneity on mechanical performance of wood has not been quantified. In this study, the dispersion of the ring...