This method is used to determine the free swell or collapse potential under a specific load. The specimen is loaded to a specified pressure. Inundation: The specimen is inundated with water.
Method B measures the one-dimensional wetting-induced swell or collapse of obtained from natural deposits or existing compacted fills. This is commonly called a single-point wetting-after-loading test, typically using a single intact specimen for each depth of interest. astm d454621 pdf