Durability of wood and wood-based products - Accelerated ageing of treated wood prior to biological testing - Evaporative ageing procedure

This document establishes a standardized procedure for assessing the long-term durability of wood and wood-based materials that have undergone treatment, specifically focusing on their performance after exposure to accelerated aging. The methodology outlines a specific test regime involving steam aging, which serves as a predictive tool to evaluate how treated timber performs under controlled environmental stress conditions. By subjecting specimens to elevated temperatures and high humidity in a steam environment, the test aims to simulate extended periods of natural weathering within a condensed timeframe. This approach allows manufacturers, researchers, and quality control professionals to analyze potential changes in material properties, such as mechanical strength and dimensional stability, following biological treatment and accelerated degradation. The protocol provides a systematic framework for sample preparation, exposure conditions, and subsequent evaluation criteria to ensure consistency and comparability of results across different laboratories and material types. Implementing this procedure facilitates a better understanding of service life expectations for treated wood products in various applications, supporting decision-making regarding material selection and treatment efficacy without resorting to uncontrolled field trials.