| abstract |
Provided are a shrinkage-reducing agent for a hydraulic material and a shrinkage-reducing agent composition for a hydraulic material including a compound represented by the general formula (1): R 1 —[O-(A 1 O) m —R 2 ] n (1), where: R 1 represents R 1 derived from a polyhydric alcohol represented by R 1 —[OH] n ; A 1 O represents an oxyalkylene group having 2 to 18 carbon atoms; R 2 represents a hydrogen atom or a hydrocarbon group having 1 to 30 carbon atoms; m represents an average added mole number of oxyalkylene groups A 1 O's; n represents 3 or 4; and when n equals 3, m represents 30 to 150, and when n equals 4, m represents 5 to 150. |