Standard Practice for Evaluation of Rock to be Used for Erosion Control

Importancia y uso:

4.1 The field examination, sampling, and petrographic examination in this practice along with appropriate laboratory testing may be used to determine the suitability of rock for erosion control. Factors to consider include identification and delineation of areas or zones of the rock, beds, and facies of unsuitable or marginal composition and properties due to weathering, alteration, structural weaknesses, porosity, and other potentially deleterious characteristics.

4.2 Evaluate both the rock mass properties and the rock material properties.

4.2.1 The rock mass properties are the lithologic properties of the in situ rock that are evaluated on a macroscopic scale in the field. These properties include features such as fractures, joints, faults, bedding, schistosity, and lineations, as well as the lateral and vertical extent of the rock unit.

4.2.2 The rock material properties are those lithologic properties that may be evaluated using small specimens and thus can be subject to meaningful laboratory testing. These properties would include mineral composition, grain size, rock hardness, degree of weathering, porosity, unit weight, and many others.

4.3 Rock proposed for use in erosion control applications are normally classified as either filter bedding stone, riprap stone, armor stone, or breakwater stone. However, these procedures may be also extended to rocks used in groin and gabion structures.

4.4 In cases in which only stockpile samples are to be obtained for laboratory testing, a full quarry geological examination may not be required. It is the responsibility of the specifier of this standard to indicate which sections of this Practice apply to the specific project.

Note 2: The quality of the result produced by this standard is dependent upon the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluation some of those factors.

Subcomité:

D18.17

Referida por:

D6711_D6711M-22, D5240_D5240M-20, D6473_D6473M-24, D6092-21, D5779_D5779M-24, D6825-21, D5312_D5312M-21, D5121-22, D5313_D5313M-21, D8281_D8281M-21

Volúmen:

04.08

Número ICS:

91.100.15 (Mineral materials and products)

Palabras clave:

armor stone; breakwater stone: erosion control; jetty stone; laboratory testing; petrographic analysis; riprap; rock; rock durability; rock revetment; rock mass properties; rock material properties;