季节性冻土区服役条件下竹复合管材吸湿特性

文章测试了竹复合管材在模拟季节性冻土区敷设、埋设服役工况下的吸湿特性及不同含水率下管材的力学性能，同时比较分析了6种防护措施下管材的吸湿特性。结果表明：竹复合管材服役温度越高，其吸水率越大；当竹复合管材含水率在65%以下时，其力学性能衰减率在5%左右；在6种防护措施中，聚脲涂层防护效果最好，管材的吸水率为2.7%。试验结果可为优化竹复合管材料防水性能提供参考。

Hygroscopic Characteristics of Bamboo Composite Pipe in Seasonal Frozen Soil Areas

This paper tests the hygroscopic properties of bamboo composite pipes laid and buried in simulated seasonal frozen soil area as well as the mechanical properties of the pipes which have different water contents, and compares and analyzes the hygroscopic properties of the pipes under six protective measures. The results show that the higher the surrounding temperature, the higher the water absorption rate of bamboo composite pipe. When the moisture content is below 65%, the attenuation rate of mechanical properties is about 5%. Among the six protective measures, polyurea coating has the best protective effect, with water absorption rate at only 2.7%. The test results can provide references for the optimization of waterproof performance of bamboo composite pipes.