Astm D4546-21 Pdf Jun 2026

The is the definitive document for the Standard Test Methods for One-Dimensional Swell or Collapse of Soils . Published by ASTM International , this technical standard serves as the universal laboratory framework for evaluating how unsaturated soils expand (swell) or contract (collapse/hydrocompression) when they come into contact with water.

It is important for professionals to be aware that as of October 2024, ASTM International has a Work Item (WK95337) for the revision of D4546-21. The stated rationale is that the standard is due for its periodic review, with some updates proposed to clarify a few parts of the document. Users should monitor ASTM's website for the eventual release of a new revision, but D4546-21 remains the current official version as of now. Astm D4546-21 Pdf

To get the complete, legally binding document for your work, you have several options: The is the definitive document for the Standard

These tests are critical for:

Refining sample preparation guidelines to ensure undisturbed samples maintain their in-situ moisture and density. The stated rationale is that the standard is