| 摘要 |
PROBLEM TO BE SOLVED: To ensure favorable fluidity and sufficient strength by adding a specified amount of a high performance AE water-reducing agent to a polymer cement slurry having a specified viscosity. SOLUTION: A polymer cement slurry having <=7,000 mPa.s viscosity is prepared by mixing 100 pts.wt. ordinary Portland cement with 5-25 wt.% acrylic synthetic resin emulsion having 35-50 wt.% solid content and 0.1-0.3 wt.%, preferably 0.02-0.05 wt.% high performance AE water-reducing agent is added to the slurry to obtain the objective bubble dispersive polymer cement slurry composition. Any of polycarboxylic ether type, naphthalene type, melamine type and aminosulfonic acid type water-reducing agents may be used as the high performance AE water-reducing agent and any of standard setting and retarded setting may be adopted according to the purpose for which the composition is used. |
