Standard Test Methods for One-Dimensional Swell or Collapse of Soils

Importancia y uso:

5.1 The wetting-induced swell/collapse strains measured from Methods A and B can be used to develop estimates of heave or settlement of a confined soil profile (1-4).4 They can also be used to estimate the magnitudes of the swell pressure (Fig. 3) and the free swell strain. The load-induced strains after wetting from Method C can be used to estimate stress-induced settlement following wetting-induced heave or settlement. Selection of test method, loading, and inundation sequences should, as closely as possible, simulate field conditions because relatively small variations in density and water content, or sequence of loading and wetting can significantly alter the test results (1, 5 and 6).

Note 1: 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:

D18.05

Referida por:

D4829-21, D3550_D3550M-17, D2435_D2435M-25, D2435_D2435M-25, D4829-21

Volúmen:

04.08

Número ICS:

93.020 (Earth works. Excavations. Foundation construction. Underground works)

Palabras clave:

collapse; compression; expansive soil; free swell; heave; hydrocompression; laboratory tests; settlement; swell; swell pressure;