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