Cohesive Soil
In the case of cohesive soil, the particles cling together as a result of electrostatic surface forces, and thus form a bonded and mouldable mass. Its characteristics (strength) is essentially influenced by the following parameters:
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Water content
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Particle size
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Clay mineral content
This type of soil is sensitive to weather conditions. It includes clays, clayey silts (e.g. sandy clay, sandy silt, loam, marl) as well as their mixtures with non-cohesive soil [ASTM D2487-06], given that their percentage by weight of the aggregates with particle sizes < 0.002 in (0.06 mm) amounts to more than 15 % [DIN1054:2010].
