Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens
Three 9" bricks are molded in a press at 1000 psi and the linear drying and firing shrinkage is determined. A 50 lb. representative sample should be submitted, including a specification of the type/class of the material.
Specimen Preparation and Drying Shrinkage: $300 per test of 5 specimens
This test method is useful in quantitatively rating or ranking both ramming and refractory plastics by their linear stability after heating.
This test method is also useful for determining whether a ramming or refractory plastic can be used in a specified application based on linear change criteria.
This test method excludes basic and carbon bearing materials.
This test method can produce data for the engineering and design of refractory installations. The linear change data can be used to determine the number of joints necessary to maintain integrity of ramming or refractory plastic in a large installation.
1.1 This test method covers the determination of the drying shrinkage and of the combined drying and linear change of refractory ramming mixes and plastics.
Extracted, with permission, from ASTM C179 Standard Test Method for Drying and Firing Linear Change of Refractory Plastic and Ramming Mix Specimens, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the standard may be purchased from ASTM International, phone 610-832-9555, e-mail: firstname.lastname@example.org, website: www.astm.org.
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