The results indicated that the Df was affected greatly by the dosage of SP.When the dosage reached certain range for different SP,a saltation of Df would occur.

• 结果发现,当减水剂掺量达某范围,分形维数出现突变,突变处对应的减水剂掺量与净浆流动度测定减水剂饱和掺量吻合良好。