Abstract Thermally modified wood (TMW) is currently produced commercially by a range of processes across many countries. A prerequisite the commercial success an efficient quality control (QC), and methods with this regard are discussed in review. When direct measurement key attribute material not feasible, QC based on suitably chosen physical or chemical “marker”. critical evaluation applied markers reveals that most them only provide data for comparative purposes particular species and/or...

In this research, the calorific value and ash content of wood bark some fast-growing hardwood species, such as tree-of-heaven, (Ailanthus altissima (Miller) Swingle), empress tree (Paulownia tomentosa (Thunberg) Steudel), trembling aspen (Populus tremuloides Michaux), oriental plane (Platanus orientalis Linnaeus) black locust (Robinia pseudoacacia were investigated in order to comprehend their behaviour during combustion estimate utilization potential solid biofuels (pellets).Beech (Fagus...

In this work, the brown rot resistance of black pine (Pinus nigra L.) wood, pressure-treated in an autoclave with nano-sized zinc borate and oxide dispersions, was investigated. The two formulations based on have given encouraging results, indicating fungicide effects metal nanoparticles Coniophora puteana. specific, mean weight losses for P. sapwood exposed to fungus (one without one addition a binder) were negligible, that is 0.54% 0.34%, respectively. On contrary, impregnation wood...

The objective of the work was to evaluate efficacy two new polyphosphate-based fire retardants (FRs) and one commercial product named Siriono® on performance physical–mechanical properties medium density fibreboard (MDF) fabricated in laboratory from Scots pine (Pinus sylvestris L.) wood. fibres were treated with aqueous solutions retardants, at 12% loading (dry salt dry wood), bonded a melamine urea formaldehyde (MUF) adhesive. physical mechanical panels assessed using European standards,...

In order to meet the growing demand for raw material of solid biofuels, it is imperative find alternative materials low cost, underutilized so far. this study, wood and bark two common cypress species (Mediterranean Arizona cypress) were chemically characterized through gravimetric spectroscopic (FTIR) analyses, assess their potential be used as in production fuel pellets. Low concentrations (0%, 2%, 7%) applied, mixtures densified a flat-die pellet press. The produced pellets examined terms...

This paper investigates the potential of utilising wood biomass from fruit tree branches and evergreen hardwood shrubs as raw materials in production particleboards when mixed with Greek fir particles. The main mechanical properties boards made therefrom were determined compared those typical industrial (IW) highest modulus rupture elasticity (30.0 N/mm2 4330 N/mm2, respectively) bending screw withdrawal (SW) resistance (127.8 N/mm) reported for downgraded or shrub particles also...

Densification of resin impregnated wood under hot-pressing is a method that along with the potential for reduction set-recovery could additionally increase density and further improve other technical properties. In this study, effect methylated melamine-formaldehyde modification on shape memory densified Populous nigra at various compression ratio levels was investigated. Furthermore, effects moisture content were also assessed. The most important conclusion drawn MF can act as means...

In this research, acetylated wood (Accoya) was tested in ground contact central Greece. After ten years of exposure during a stake test, pine (Pinus radiata) stakes, with 20% acetyl weight gain, were completely intact and showed no visual decay (decay rating: 0). However, the key mechanical properties Accoya wood, that is, modulus elasticity (MOE) rupture (MOR) after 10 contact, significantly reduced by 32.8% 29.6%, respectively, despite an excellent result since evidence fungal attack...

Aim of this study was to evaluate the effect aluminium hydroxide and borates, separately or combined with ammonium polyphosphate (APP), upon technological fire properties medium density fibreboard (MDF). Fire resistant MDF fabricated in laboratory from Scots pine (Pinus sylvestris L.) fibres bonded a high molar ratio melamine-urea-formaldehyde resin. Overall, 24 h-swelling water absorption treated boards were improved remained unchanged compared untreated ones. On contrary, internal bond...

The requirement for alternative raw materials fuel pellets that would enable the use of readily available low-cost renewable resources and waste materials, such as bark, has always attracted interest. aim current work was to assess effect black pine (Pinus nigra L.) bark content (0%–100%) well densification temperature on properties wood produced in a single pellet die. quality assessment carried out by determination radial compression strength, density, moisture content, ash surface...

Evaluation of Weathering Furfurylated Wood Decks after a 3-year Outdoor Exposure in Greece

The field of wood protection is currently changing due to the restrictions imposed by Biocidal Products Regulation. need for development new technologies therefore growing. In this work, resistance European beech (Fagus sylvatica L.) impregnated with nano-dispersions zinc oxide (nano-ZnO) and borate (nano-ZnB) against termite Reticulitermes grassei Clement was investigated. Three different concentrations (0.5%, 1%, 2%) nanocompounds were tested. effects water leaching also A severe effect in...

The purpose of the work was to assess combined effect furfurylation, along with addition silver nanoparticles (NPsAg), on thermal stability, density, water absorption, hardness and biological durability juvenile tropical woods originating from Costa Rican forest plantations. It demonstrated that weight percentage gain (WPG) wood treated furfuryl alcohol (FA) varied 14.44% 44.26%, 12.92% 44.52% after NPsAg. Additionally, for species WPG over 25%, stability as well greater, while absorption...

The aim of the present paper was to study effect some particle recovery parameters on quality hydrothermally recycled particleboards. research carried out in two phases: rough evaluation various and determination particleboard properties. It concluded that optimum group hydrothermal (among those tested this investigation) were 45% water retention/150°C temperature/10 min duration. This conclusion relies below-mentioned facts: conditions 45%/150°C/10 resulted lowest agglomeration ratio...

The use of agricultural biomass to produce biofuels and energy can provide many environmental socio-economic benefits. This research project examines the possibility replacing part wood material in a pellet with various proportions residues crops such as medic, maize, wheat bran, straw, sunflower, cardoon. Such substitution would contribute recycling materials sustainable other natural resources. It reduce emissions gaseous pollutants by fossil fuels solid biofuels. chosen species, well...

ABSTRACTABSTRACTThe aim of this study was to assess the biological resistance Phoenician juniper (Juniperus phoenicea L.) wood against two fungal species. Two sources materials were used, one from a naturally grown population and other cultivated area on island Syros in Cyclades, Greece. The tested sapwood heartwood both cultures Coniophora puteana Rhodonia placenta basidiomycetes. categorised as class 1: very durable, whereas classified 5: not durable due their high susceptibility C. R....

This paper investigates the basic hygroscopic properties and formaldehyde content (FC) of particleboards produced with wood biomass from fruit tree branches evergreen hardwood shrubs as substitute raw materials for fir particles. One-layer laboratory two distinct target densities (0.63 g/cm3 0.69 g/cm3) were using various mixtures above materials. Industrially particles also used comparison purposes. The results showed that replacement (FW) by material significantly upgraded board's quality...