Astm D454621 Pdf Jun 2026

The update improved the clarity of the procedures regarding loading sequences and specialized applications for both swelling and collapsing soils, enhancing the precision of laboratory testing for the geotechnical industry.

The specimen is placed in the apparatus, the target load is applied, and the system stabilizes. Water is added to inundate the specimen. astm d454621 pdf

ASTM D4546-21 establishes laboratory procedures for measuring the one-dimensional swell or collapse of unsaturated soils upon inundation, focusing on three test methods tailored to varied geotechnical applications. The standard is used to quantify potential heave or settlement for foundations and earthworks. For the full standard, visit ASTM . The update improved the clarity of the procedures

Fill the reservoir with distilled or demineralized water. Fill the reservoir with distilled or demineralized water

ASTM D4546-21 is the active standard published by ASTM International titled "Standard Test Methods for One-Dimensional Swell or Settlement Potential of Cohesive Soils."