Astm D4546-21 Pdf 2021 -

Updated units of measurement and improved guidance on significant digits.

Geotechnical engineers and soil testing laboratories use this standard to evaluate "expansive" or "collapsible" soils. These are materials that significantly change volume when their water content increases, which can lead to structural damage in foundations, pavements, and earthworks. Astm D4546-21 Pdf

The percentage of expansion that occurs under a very low nominal pressure ( Updated units of measurement and improved guidance on