・maingroup

Compositions of mortars, concrete or artificial stone[4]

Note(s) Any ingredient of compositions of mortars, concrete or artificial stone, classified in groups C04B 26/00-C04B 32/00—according to the last place rule, and which itself is determined to be novel and non-obvious, must also be classified in the last appropriate place in groups C04B 7/00-C04B 24/00 [4,6,8]Any ingredient of compositions of mortars, concrete or artificial stone, which is not identified by the classification in groups C04B 26/00-C04B 32/00—according to the last place rule, and which is considered to represent information of particular interest for search, may also be classified in the last appropriate place in groups C04B 7/00-C04B 24/00. This can for example be the case when it is considered of interest to enable searching of compositions using a combination of classification symbols. Such non-obligatory classification should be given as "additional information". For example, a well defined Portland cement mortar mixture containing clay as an essential or characterising filler is classified in group C04B 28/04—and may also additionally be classified in group C04B 14/10 In groups C04B 26/00-C04B 32/00, it is desirable to add the indexing codes of group C04B 111/00