| 摘要 |
PURPOSE:To obtain a grout of shortened grirding time with prevention of powder aggregation, etc., by mixing a portland cement clinker and powdered gypsum, each pulverized in the presence of a polyhydric alcohol or ethanolamine. CONSTITUTION:The objective grout can be obtained by mixing (1) 4.5-30 inner wt% (calculated as SO3) of powdered gypsum with (2) powdered portland cement clinker. Both of the components are pulverized into a size <=30mu in the presence of a polyydric alcohol and/or ethanolamine. |
