CPC Main Group
C04B 38/00 Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof (treating slag with gases or gas generating material C04B5/06 )
17 direct subcodes
Child Classifications
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- C04B 38/02 by adding chemical blowing agents
- C04B 38/04 by dissolving-out added substances
- C04B 38/06 by burning-out added substances
- C04B 38/08 by adding porous substances
- C04B 38/10 by using foaming agents (C04B38/02 takes precedence)