ASTM C1749-17a PDF Download

The ASTM C1749-17a standard provides guidance on several methods for measuring the rheological properties of fresh hydraulic cement paste. The main properties measured include plastic viscosity and yield stress, as defined by the Bingham model, as well as apparent viscosity. These properties can provide insights into the workability and flow behavior of cement paste compositions, as well as the influence of specific materials or combinations of materials on flowability.

It is important to note that the rheological properties may vary depending on the procedure used. Thus, this guide outlines procedures that aim to deliver reproducible results. The standard acknowledges that it offers a collection of information or options, and it does not recommend a specific course of action. It emphasizes that professional judgment, education, and experience should be used in conjunction with this guide. Additionally, the standard emphasizes that it does not replace the standard of care by which the adequacy of a professional service must be judged.