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The Atterberg limits can be used to distinguish between silt and clay and to distinguish between different types of silts and clays. The water content at which soil changes from one state to the other is known as consistency limits, or Atterberg's limit. These limits were created by Albert Atterberg, a Swedish chemist and agronomist, in 1911. [1]
A poorly graded soil will have better drainage than a well graded soil, [2] if it is not high in clay quality. Soil is graded as either well graded or poorly graded. [3] Soil gradation is determined by analyzing the results of a sieve analysis [4] [5] or a hydrometer analysis. [1]
The classification system was first developed by Hogentogler and Terzaghi in 1929, [1] but has been revised several times since. AASHTO Soil Classification System (from AASHTO M 145 or ASTM D3282) General Classification
Albert Mauritz Atterberg (19 March 1846 – 4 April 1916) was a Swedish chemist and agricultural scientist who created the Atterberg limits, which are commonly referred to by geotechnical engineers and engineering geologists today. In Sweden he is equally known for creating the Atterberg grainsize scale, which remains the one in use.
In these limits, the infinitesimal change is often denoted or .If () is differentiable at , (+) = ′ ().This is the definition of the derivative.All differentiation rules can also be reframed as rules involving limits.
[3] p. 10 After sampling, the sample volume typically needs to be reduced. The material to be analysed must be carefully blended, and the sample withdrawn using techniques that avoid size segregation, for example using a rotary divider [3] p. 5. Particular attention must be paid to avoidance of loss of fines during manipulation of the sample.
Atterberg may refer to: ... Atterberg limits This page was last edited on 27 ... Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; ...
The ASTM standard for shrinkage limit is ASTM D4943 The listed ASTM standard has been superceeded because it used mercury. —Preceding unsigned comment added by 192.153.5.147 16:23, 23 July 2009 (UTC) Should be Attenberg Limits no Atterberg —Preceding unsigned comment added by 63.70.138.182 16:17, 7 December 2009 (UTC)
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