Standard Practice for Classification of Soils and Soil-Aggregate Mixtures for Highway Construction Purposes

Importancia y uso:

4.1 The practice described classifies soils from any geographic location into groups (including group indexes) based on the results of prescribed laboratory tests that determine the particle-size characteristics, Liquid Limit, and Plasticity Index.

4.2 The assigning of a group symbol and group index can be used to aid in the evaluation of the significant properties of the soil for highway and airfield purposes.

4.3 The various groupings of this classification system correlate in a general way with the engineering behavior of soils. Also, in a general way, the engineering behavior of a soil varies inversely with its group index. Therefore, this practice provides a useful first step in any field or laboratory investigation for geotechnical engineering purposes.

Note 2: 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 facilities 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 evaluation some, but not all, of those factors.

Subcomité:

D18.07

Referida por:

A0746-18R22, D0559_D0559M-15R23, E2256-24, D0560_D0560M-16, D0653-24A, D0420-18, D4318-17E01, D4318-17E01, D7382-20, D5092_D5092M-16R24

Volúmen:

04.08

Número ICS:

93.080.10 (Road construction)

Palabras clave:

aggregate; airfields; Atterberg limits; classification; clay; embankments; gradation; granular; gravel; group index; highway construction; highways; index ranges; sand; silt; soil; soil aggregate mixtures; soil classification; soil tests; subgrade; subgroups;