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You're looking for a guide on ASTM D4546-21, which is a standard test method for determining the collapse pressure of corrugated metal pipes.
ASTM D4546-21 is a standard test method that covers the determination of the frictional properties of bituminous mixtures using the Asphalt Pothole Tester. The test method is designed to evaluate the frictional characteristics of bituminous mixtures, including asphalt concrete, at various temperatures and under different testing conditions. astm d454621 pdf
The ASTM D4546-21 standard specifically pertains to the "Standard Test Methods for Determining the Water-Absorption Properties of Soil". This standard is crucial in geotechnical engineering and soil science for understanding the behavior of soils in relation to water absorption, which affects soil stability, construction, and environmental projects. Short story: "ASTM D4546-21 PDF" You're looking for
2. Scope and Application
Test Method A (Wetting-after-Loading on Multiple Specimens)
: Used for reconstituted specimens simulating compacted fills. It measures swell pressure and free swell by applying different loads to identical specimens before wetting. The ASTM D4546-21 standard specifically pertains to the