The cement strength grade is confirmed with the way of physical treatment.But,anticipative ef-fect cannot come true with the way that the dispersity is controlled strictly during technics processing.

• 水泥强度等级采用物理胶砂方法加以确定,在工艺生产上对分散度(细度、比表面积)加以严格控制却难以达到预期的效果。