ASTM D4223/D4223M-20 PDF Download

The ASTM D4223/D4223M-20 standard provides guidelines for the preparation of standard specimens of soil-asphalt mixtures for testing. The standard specifically applies to fine-grained soils and is limited to specimens with dimensions of 100-mm [4-in.] diameter by 65-mm [2.5-in.] height.

The standard emphasizes the importance of competent personnel and suitable equipment and facilities for obtaining reliable results. It notes that compliance with Practice D3740, which evaluates testing, sampling, and inspection procedures, does not guarantee reliable results. The quality of the results depends on various factors.

In terms of units and significant digits, the standard follows the guidelines established in Practice D6026. It specifies the use of the gravitational system of inch-pound units when dealing with inch-pound units and notes that pounds are commonly used to represent both mass (lbm) and force (lbf).

It is important to understand that this standard provides instructions for specific operations and should be used in conjunction with professional judgment. It does not replace education or experience, and not all aspects of the standard may be applicable to every circumstance. The standard has been approved through the ASTM consensus process.