Atterberg limits


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Atterberg limits

In plastic soils, the water contents (determined by standard tests) which define the boundaries between the different states of consistency of plastic soils. Also see liquid limit, plastic limit, shrinkage limit.
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Each sample of iron ore tailing was geotechnically characterized by the following laboratory tests: (i) Atterberg limits, according to the testing methods ME 082 and ME 122 (Departamento Nacional de Estradas de Rodagem [Dner], 1994a), b) (ii) Unit weight of solids, according to the technique NBR 6508 (Associagao Brasileira de Normas Tecnicas [ABNT], 1984) and (iii) Sieve Analysis, according to testing method ME 051 (Departamento Nacional de Estradas de Rodagem [Dner], 1994c).
We have performed some of test like Modified Proctor Test (MPT),CBR, EDAX, SEM, Specific gravity test and Atterberg limits to visualize engineering properties of soil.
Geotechnical investigations include boring boreholes or trial pits, taking disturbed and undisturbed samples, and conducting field tests (SPT, CPT, VST, etc.) and laboratory experiments (determining specific gravity, Atterberg limits, moisture content, particle size analysis, permeability, etc.).
Atterberg limits. Proctor test results and mechanical properties of the experimental soil PL: plastic limit; LL: liquid limit; PI: plasticity index; WC: water content; BD: bulk density; E: Young's modulus; v: Poisson's ratio; [k.sub.s]: stress conversion factor.
The Atterberg limits were determined, and most of the materials could be classified as low-plasticity clay (CL).
Vangpaisal, "Investigation of the effects and degree of calcium exchange on the Atterberg limits and swelling of geosynthetic clay liners when subjected to wet-dry cycles," Geo textiles and Geomembranes, vol.
Soil properties evaluated as part of this study included specific gravity, Atterberg limits, modified compaction, one-dimensional consolidation, unconfined compression, pH and electrical conductivity.
For most pipeline projects, the project documents should state that the dry preparation method is to be used when referring to ASTM D 4318 (Atterberg limits).
Granulometric Atterberg limits Optimum Corresponding composition water maximum dry content (%) density (g/[cm.sup.3]) Silt (%) Clay (%) Plastic Liquid limit limit (%) (%) 81.37 18.25 17 51 21.26 1.63 Granulometric Chemical composition of 40 cm soil composition samples and the designed soluble salts samples (%) Silt (%) Clay (%) Content Designed Designed of soluble sample (1) sample (2) salts (%) 81.37 18.25 1.40 1.08 1.22 Table 2: Range of the variables.
The soil consistency was determined using the Atterberg limits test apparatus following the standard procedure (ASTM D4318).