ASTM C944/C944M-19 PDF Download

The ASTM C944/C944M-19 standard is a test method used to determine the abrasion resistance of concrete or mortar surfaces using the rotating-cutter method. It involves an abrasion device, a rotating cutter, a balance, and a leveling plate.

The standard provides guidance on various factors that need to be considered during the testing process, such as the surface description, size, and finish type of the specimen, as well as the concrete compaction, age, and strength. It also specifies the applied surface treatment, abrasion time, load used, depth of wear, mass loss, and abrasion time that need to be reported.

The test method is primarily intended for use on the top ends of concrete cores or mortar specimens, or other samples of concrete with insufficient test area for other test methods. It can also be applied to concrete surfaces in place by measuring the abrasion loss.

The standard emphasizes that the test method provides an indication of the relative wear resistance of mortar and concrete and has been successfully used in quality control for highway and bridge concrete subject to traffic. It provides detailed procedures and guidelines for conducting the test and interpreting the results.

It is important to note that the values provided in the standard can be expressed in either SI units or inch-pound units, and they are regarded as separate standards. Combining values from both systems may result in non-conformance with the standard. Additionally, the standard includes explanatory notes and footnotes that should not be considered as requirements of the standard.