| 摘要 |
The present invention realtes to a polycarbaxylic acid polymer for a cement admixture which can provide a cement composition superior in workability without increasing the amount of the polycarboxylic acid polymer to be added to cement and in addition can impart adequate workability to a cement composition having a relatively small slump value. Said polycarboxylic acid polymer has a branched structure on the main chain, the side chain of which is a polyalkylene glycol chain having 2 to 18 carbon atoms.
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