Standard Test Method for Measuring the Erosion Function of a Soil in an Erosion Function Apparatus

Importancia y uso:

5.1 This method provides a means of obtaining the erosion function of a soil, including the critical velocity and critical shear stress, which can be used to predict the erosion and scour of soil by water.

5.2 This method can be applied to both fine-grained and coarse-grained soils. For the test, thin walled tube samples following Practice D1587/D1587M are favored. If such samples cannot be obtained, as in the case of coarse-grained soils, other sampling methods such as Practice D3550/D3550M can be utilized, where applicable. Alternatively, split spoon samples following Test Method D1586/D1586M can be obtained, and the coarse-grained soil can be reconstituted to the in situ density and moisture conditions for erosion testing.

5.3 This method may also be useful in investigating the effect of various factors on the erosion resistance of soils, including mechanical, physical, and chemical properties of the soil and the water.

Note 3: The quality of the result produced by this standard is dependent on the competence of the personnel performing it and the suitability of the equipment and facility used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some, but not all, of those factors.

Subcomité:

D18.06

Volúmen:

04.09

Palabras clave:

critical shear stress; EFA; erodibility; erosion function apparatus; erosion function; erosion rate; erosion resistance; hydraulic shear stress; mean flow velocity; scour;