ASTM C492

The hydration of dead-burned dolomite grains is an important aspect of both manufacturing and using such grains. Moisture from any source will cause the grains to partially disintegrate, eventually making the dead-burned dolomite unfit for use. This test method may prove useful for determining, in a relative manner, which grains are more resistant to hydration than others.

Data from one laboratory might help in establishing internal limits for determining whether a particular batch of grain is suitable for refractory production. However, this test method takes great care to run, and is not recommended as a quality control test. Possibly, a specification might be developed between two parties if sufficient care in establishing the bias between the laboratories is carried out.

1. Scope

1.1 This test method covers the determination of the amount of hydration of a granular dead-burned refractory dolomite when exposed to moist air.

1.2 The values stated in inch-pound units are to 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

C92 Test Methods for Sieve Analysis and Water Content of Refractory Materials
E11 Specification for Wire Cloth and Sieves for Testing Purposes

Index Terms

dolomite; grain; humidity cabinet; hydration resistance; refractories; Dead-burned refractory dolomite; Dolomite refractories; Granular dead-burned refractory dolomite; Hydration; Refractories (dolomite) ; ICS Number Code 81.080; ICS Number Code 81.080

Citing ASTM Standards

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