本发明涉及一种评价耐候钢锈层保护能力大小的方法,所述方法通过耐候钢锈层的吸醇、脱醇测试,得到所述耐候钢锈层的增失重并用来判定锈层吸脱醇速率；并由所述耐候钢锈层的吸醇、脱醇测试得到所述耐候钢锈层的残余吸醇量m残以计算锈层颗粒的比表面积大小,评价所述耐候钢锈层的保护能力大小。本发明的方法操作过程更加简便,测试效率更高,测试结果更加准确可信,更真实地反映耐候钢锈层的保护能力的大小；属于借助于测定材料的化学或物理性质来测试或分析材料领域。

The present invention relates to a method for evaluating the protective ability of a weathering steel rust layer. The method obtains the weight loss of the weathering steel rust layer through the alcohol absorption and dealcoholization test of the weathering steel rust layer and is used to determine the rust layer absorption and removal alcohol Rate，and from the alcohol absorption and dealcoholization test of the weathering steel rust layer, the residual alcohol absorption m residual of the weathering steel rust layer is obtained to calculate the specific surface area of the rust layer particles, and to evaluate the protection of the weathering steel rust layer Ability size. The method of the present invention has simpler operation process, higher test efficiency, more accurate and credible test results, and more truly reflects the protective capacity of the weathering steel rust layer， it belongs to the test or analysis of materials by measuring the chemical or physical properties of the materials field.