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ASTM C1446-11

Historical Revision

Standard Test Method for Measuring Consistency of Self-Flowing Castable Refractories

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1.1 This test method covers the determination of the consistency (degree of self-flow) and working time of self-flowing castable refractories. This test may optionally be used to determine working time of self-flowing castables.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

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 determine the applicability of regulatory limitations prior to use.


This test method is used to measure the consistency (degree of self-flow) that a castable refractory demonstrates at a given level of tempering liquid at specified time intervals after the liquid is added. A self-flow of 25 % has been selected as the minimum at which a mix can be poured into typical molds or forms in normal practice.

Castable refractories which are self-flowing at one level of tempering liquid will require vibration for placement at some lower level of tempering liquid. At the tempering liquid levels which require vibration or tamping for placement, the castable refractory should be characterized using test methods which are appropriate for castable refractories designed for vibration placement, such as Test Method C1445.

This test method is not appropriate for determining the pumpability of castable refractories.

SDO ASTM: ASTM International
Document Number C1446
Publication Date July 1, 2011
Language en - English
Page Count 5
Revision Level 11
Supercedes
Committee C08.09
Publish Date Document Id Type View
Sept. 1, 2019 C1446-19 Revision
July 1, 2011 C1446-11 Revision
March 1, 2007 C1446-07E01 Revision
March 1, 2007 C1446-07 Revision
Oct. 10, 1999 C1446-99 Revision