ASTM C1446 - 11

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

    Active Standard ASTM C1446 | Developed by Subcommittee: C08.09

    Book of Standards Volume: 15.01


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    Significance and 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.

    1. Scope

    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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C71 Terminology Relating to Refractories

    C230/C230M Specification for Flow Table for Use in Tests of Hydraulic Cement

    C860 Test Method for Determining the Consistency of Refractory Castable Using the Ball-In-Hand Test

    C862 Practice for Preparing Refractory Concrete Specimens by Casting

    C1445 Test Method for Measuring Consistency of Castable Refractory Using a Flow Table

    E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


    ICS Code

    ICS Number Code 81.080 (Refractories)

    UNSPSC Code

    UNSPSC Code 31371200(Castables)


    Referencing This Standard

    DOI: 10.1520/C1446-11

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM C1446-11, Standard Test Method for Measuring Consistency of Self-Flowing Castable Refractories, ASTM International, West Conshohocken, PA, 2011, www.astm.org

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