ESv | ESp | Nature and quality of land use |
ESv ≤ 65 | ESp ≤ 60 | Clayey sand, there is a risk of shrinkage and swelling |
65 ≤ ESv ≤ 75 | 60 ≤ ESp ≤ 70 | Slightly clayey sand of acceptable cleanliness for hydraulic concrete |
75 ≤ ESv ≤ 85 | 70 ≤ ESp ≤ 80 | Clean sand with a low percentage of fine clayey suitable for quality concrete |
ESv ≥ 85 | ESp ≥ 85 | Very clean sand: the absence of fine clay; risk of causing a plasticity defect |