Effect on the Resistance of Concrete Acid Corrosion in Superficial Soil Layers

Table 1

Physical properties of sand.

Quality percentage of different size particles			Constrained grain size (D60)	Intermediate particle diameter (D30)	Effective size (D10)	Uniformity coefficient (Cu)	Curvature coefficient (Cc)	Specific gravity (Gs)
1∼0.5 (mm)	0.5∼0.25 (mm)	0.25∼0.1 (mm)
12%	62%	26%	0.38	0.29	0.17	2.24	1.30	2.65