Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability (active ingredients C04B22/00 - C04B24/00; hardening of a well-defined composition C04B26/00 - C04B28/00; making porous, cellular or lightening C04B38/00; mechanical aspects B28, e.g. conditioning the materials prior to shaping B28B17/02)

14 direct subcodes

Child Classifications

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C04B 40/0003
C04B 40/0025
C04B 40/0028
C04B 40/0067
C04B 40/0071
C04B 40/0075
C04B 40/0082
C04B 40/0089
C04B 40/0091
C04B 40/0092
C04B 40/0096
C04B 40/02 Selection of the hardening environment
C04B 40/04 Preventing evaporation of the mixing water (permanent coverings C04B41/00)
C04B 40/06 Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers