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ASTM C673-97(2008)
- Standard Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
- standard by ASTM International, 08/01/2008
- Publisher: ASTM
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1.1 This classification covers fireclay and high-alumina plastic refractories and ramming mixes that can be pounded or rammed into place to form a monolithic structure. The terms "plastic" and" ramming mix" are generally intended to describe the workability of the material. In this regard, plastics are considered to be materials having a workability index of more than 15 % in accordance with Test Method C 181, while ramming mixes generally have less than 15 % workability by the same procedure.