ASTM D4546-21 the current international standard for laboratory measurement of one-dimensional wetting-induced swell or collapse (hydrocompression) in unsaturated soils
is the current industry standard for measuring the one-dimensional wetting-induced swell or collapse (hydrocompression) of soils. Released in 2021, this standard provides geotechnical engineers and laboratory professionals with standardized procedures to predict how soils will react to moisture changes under specific loading conditions. Scope and Purpose of ASTM D4546-21 Astm D4546-21 Pdf