Figure 2

Image and distribution of soil particle size. (a1,a2) particle size distribution of CK; (b1,b2) particle size distribution with SAP concentration of 0.1%; (c1,c2) particle size distribution with SAP concentration of 0.2%; (d1,d2) particle size distribution with SAP concentration of 0.5%; (e1,e2) particle size distribution with SAP concentration of 1.0%.