Astm D454621 Pdf Jun 2026
In geotechnical engineering, understanding how soil responds to water is critical for the stability of any structure. , titled "Standard Test Methods for One-Dimensional Swell or Collapse of Soils," provides the laboratory framework for measuring these behaviors. Whether you are a geotechnical engineer, lab technician, or student, this standard is the primary reference for predicting how much a soil will heave (swell) or settle (collapse) when it becomes saturated. What is ASTM D4546-21?
While ASTM D4546-21 does not prescribe pass/fail criteria, common engineering practice classifies collapse potential as:
The sand cone test is a widely used method for determining the in situ field density of soil and soil-aggregate base materials. The test involves: astm d454621 pdf
In China, the standard can be accessed through:
ASTM D4546-21 establishes laboratory test methods (A, B, and C) to determine the one-dimensional swell or collapse of soils, crucial for assessing foundation stability. This updated standard focuses on measuring free swell, swell pressure, and hydrocompression to predict soil behavior under moisture changes. To access the full standard document, visit ASTM International . What is ASTM D4546-21
There is no active ASTM standard with the number . The closest real standards are:
| Channel | Availability | |---------|-------------| | | Official ASTM representation; can assist with purchases and licensing | | Authorized distributors | Platforms such as Accuris, Normadoc, and KSSN provide direct downloads to Chinese customers | | Local standards libraries | Some university libraries (e.g., Tsinghua, Tongji) maintain ASTM subscriptions | | Chinese standards platforms | Websites like Antpedia provide excerpts and summaries, but not the full document without purchase | This updated standard focuses on measuring free swell,
Positioned at the top and bottom of the sample to allow uniform water flow while preventing soil migration.
): The change in specimen height divided by the initial height, multiplied by 100. Swell Pressure ( Pscap P sub s
