1. Scope
1.1 This guide covers description of several methods to measure the rheological properties of fresh hydraulic cement paste. All methods are designed to determine the yield stress and plastic viscosity of the material using commercially available instruments and the Bingham model. Knowledge of these properties gives useful information on performance of cement pastes in concrete. 1.2 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 1.4 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This guide cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this guide be applied without consideration of a projects many unique aspects. The word Standard in the title of this guide means only that the standard has been approved through the ASTM consensus process.
This guide is starting to be more widely used to determine the compatibilities between cement and chemical admixtures. Therefore, it would be useful for a standard test to be available for operator to compare the results.
Keywords
hydraulic cement; rheology; viscosity; yield stress
The title and scope are in draft form and are under development within this ASTM Committee.
Citing ASTM Standards
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