| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a highly versatile shrinkage reducer for use in hydraulic materials which is inexpemsive, is not required to be combined with other admixtures and, when combined with a binder (X), can give a cured product suppressing reduction in the strength, and exhibits an excellent shrinkage-reducing function and excellent freeze-thaw resistance. <P>SOLUTION: The shrinkage reducer for use in hydraulic materials is used in combination with at least one binder (X) selected from among portland cement, blast furnace slag cement, silica cement, fly ash cement, ecocement, and silica fume cement; and comprises a polyoxyalkylene glycol compound (A) and a water reducer (B), the molecular weight of the polyoxyalkylene glycol compound (A) being 4,000-10,000, and the water reducer (B) comprising at least one member selected from a lignin sulfonate and a polymer having polyoxyalkylene groups and anionic groups. <P>COPYRIGHT: (C)2012,JPO&INPIT |
