Astm D454621 Pdf Jun 2026

: It measures the specific amount of heave or collapse that will occur at that exact depth and load. Test Method C (Loading After Wetting) Focus : Evaluating future settlement under new loads.

The primary goal of ASTM D4546-21 is to quantify the potential for ground surface heave or settlement. This is critical for designing foundations, pavements, and earthworks on expansive or collapsible soils. By subjecting soil specimens to controlled inundation and vertical loads, the test provides: astm d454621 pdf