High toxicity of the preservatives most frequently used in wood treatment and the resulting risks of handling pose a threat to small producers and to the environment. In an attempt to mitigate these problems, the present study was conducted with the objective of evaluating the preservative effect of tannic extract on biodeterioration of Acacia mearnsii wood. For this purpose, untreated and pres...

The aim of this research is to examine the market potential for wood plastic composite (WPC) products in the highway construction sector in place of nonrenewable materials (e.g. virgin plastic and steel) and preservative-based products (treated wood). State-level transportation officials indicate that the majority of highway construction purchases are conducted by highway construction contracto...

Microwave (MW) treatment is an effective method in the wood modification field. It has become more popular past decade since it enhances permeability, allowing a efficient impregnation of preservative chemicals. Due to number parameters involved MW wood, multiple regression models and statistical analysis can effectively evaluate relationship between various parameters. Therefore, this work aim...

Sections of the Howe truss railway bridge at Waikino that had been treated with preservatives were inspected after approximately 12 months. There were minor colour changes, particularly where CD50 and Busan 30L had been applied to the surface. CD50 was the only surface treatment which was still water-repellent. Of the preservatives which had been inserted into holes bored in the stringers, the ...

The evolution of laws on the use of biocide products has led to important changes in the field of wood preservation leading to an increasing interest for non “biocidal treatments” like thermal or chemical modifications. While thermal modifications become more and more common on industrial scale, development of chemical modifications progresses slowly. One reason for the challenges encountered i...

The release of arsenic from wood pressure-treated with chromated copper arsenate (CCA) can be decreased by application of wood finishes, but little is known about the types of finishes that are best suited for this purpose. This study evaluated the effects of finish water repellent content and ultraviolet (UV) radiation on the release of arsenic, copper, and chromium from CCA-treated wood expos...

There is a need to develop improved accelerated test methods for evaluating the leaching of wood preservatives from treated wood exposed to precipitation. In this study the effects of rate of rainfall and length of intervals between rainfall events on leaching was evaluated by exposing specimens to varying patterns of simulated rainfall under controlled laboratory conditions. Lumber specimens w...

Abstract Nowadays, taking into account environmental degradation, climate changes, as well as, environmentally friendly regulations and increasing ecological awareness of consumers, methods wood protection without negative impact on the environment are being intensively developed. In this study, a mixture chitosan caffeine was proposed preservative. The aim research to evaluate application (med...

Sequential fungal changes that occur on three types of wood are described, namely naturally durable wood, preservative-treated and radiata pine (considered as untreated wood) for above-ground use, during a four-year survey period. The surveys were conducted thrice at 1, 2, 4 years exposure. During the first second exposure, both total isolates species diversity low in each sample, with ascomyce...