ASTM C1621/C1621M REV B

Abstract

This test method covers determination of the passing ability of self-consolidating concrete by using the J-Ring in combination with a mold. <br>The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. <br>The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. <br><em>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 determine the applicability of regulatory limitations prior to use.</em> (<strong>Warning</strong>&#8212;Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.²) <br><strong>*A Summary of Changes section appears at the end of this standard.</strong> <br>² Section on Safety Precautions, Manual of Aggregate and Concrete Testing, <em>Annual Book of ASTM Standards,</em> Vol. 04.02.