| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dispersing agent for a hydraulic composition, which strikes a balance between the improvement in flow retentivity of the hydraulic composition and early strength thereof by using a naphthalene sulfonate formaldehyde condensation product as a dispersing agent. <P>SOLUTION: The dispersing agent for the hydraulic composition contains, in a predetermined weight ratio, the naphthalene sulfonate formaldehyde condensation product and an alkyldiethanolamine having an alkyl group having 1-3 carbon atoms. <P>COPYRIGHT: (C)2012,JPO&INPIT |
