ASTM C348-21 PDF Download

ASTM C348-21 is a standard test method used to determine the flexural strength of hydraulic-cement mortars. It provides a means for measuring the resistance of mortar samples to bending forces. The test method involves testing mortar prisms in flexure, and these prisms can also be used for determining the compressive strength of the mortar using ASTM Test Method C349.

It is important to note that the values obtained from this test method are intended for research or reference purposes only and should not be used for determining compliance with specification requirements. This means that the results obtained from this test cannot be used to judge if the mortar meets specific performance standards.

The standard specifies that values should be determined and reported in SI units, but measurements made in other units can be converted using the appropriate conversion rules outlined in IEEE/ASTM SI 10.