The ASTM D4446-13 standard test method is used to evaluate the anti-swelling effect of waterproof formulas on wood. This method determines the anti-swelling performance of water repellent agents by measuring the difference in swelling of wood in a liquid water environment. The test can provide preliminary screening data for waterproofed wood, helping to evaluate its performance in practical use. This method is also suitable for comparing the relative swelling of untreated wood and waterproofed wood. The test results have important reference value for the development and application of water repellent agents.
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