| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an additive for hydraulic composition that improves the strength of a hydraulic composition hardened body in about 24 hours after preparation of a hydraulic composition. <P>SOLUTION: There is provided the additive for hydraulic composition comprising nitrocatechol and/or cyanocatechol. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
