AASHTO R 93-19 PDF Download

AASHTO R 93-19 is a standard practice document that outlines the procedure for determining the service life of corrugated high-density polyethylene (HDPE) pipes that are manufactured with recycled content. The primary focus of this standard is to evaluate the pipes for Stage II brittle failures caused by slow crack growth mechanisms.

The standard practice relies on data obtained from testing conducted in accordance with ASTM F3181, specifically the Un-Notched Constant Ligament Stress (UCLS) test. This test helps to assess the performance and durability of the corrugated HDPE pipes containing recycled materials.

One of the main purposes of this standard practice is to establish minimum UCLS performance criteria. These criteria are essential in ensuring that the pipes have a specified service life under specific service conditions. It is important to note that this standard practice applies to pipes manufactured in accordance with M 294 and contains both post-consumer recycled (PCR) materials and post-industrial recycled (PIR) materials. However, it does not specifically address pipes made solely from virgin materials.