AASHTO R 93-19详细说明了测定含回收材料的波纹高密度聚乙烯（HDPE）管道使用寿命的程序。通过缓慢裂纹扩展机制，使用寿命与第二阶段脆性失效有关。本标准实施规程中的使用寿命确定基于根据ASTM F3181（无缺口恒定韧带应力（UCLS）试验）进行的试验的失效数据分析。本标准实施规程可用于制定最低UCLS性能标准，以确保在给定使用条件下，含有回收材料的波纹HDPE管的预期使用寿命。本标准实施规程适用于含有回收材料且按照M 294制造的管道。它适用于使用消费后回收（PCR）材料和工业后回收（PIR）材料制造的管道。它不适用于仅使用原始材料制造的管道。

AASHTO R 93-19 details the procedure for determining the service life of corrugated highdensity polyethylene (HDPE) pipes containing recycled materials. Service life is relative to Stage II brittle failures via the slow crack growth mechanism.The service life determination in this standard practice is based on analysis of failure data from testing conducted in accordance with ASTM F3181, the Un-Notched Constant Ligament Stress (UCLS) test.This standard practice can be used to establish minimum UCLS performance criteria to ensure a desired service life at given service conditions for corrugated HDPE pipes containing recycled materials.This standard practice is applicable for pipes containing recycled materials and manufactured in accordance to M 294. It is applicable both for pipes manufactured with post-consumer recycled (PCR) materials and post-industrial recycled (PIR) materials. It is not intended for pipes manufactured with only virgin materials.