Albert Atterberg
Encyclopedia
Albert Mauritz Atterberg (March 19, 1846 – April 4, 1916) was a Swedish
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 chemist
Chemist
A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

 and agricultural scientist who created the Atterberg limits
Atterberg Limits
The Atterberg limits are a basic measure of the nature of a fine-grained soil. Depending on the water content of the soil, it may appear in four states: solid, semi-solid, plastic and liquid. In each state the consistency and behavior of a soil is different and thus so are its engineering properties...

 that 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.

Atterberg received his Ph.D.
Ph.D.
A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...

 in chemistry from Uppsala University
Uppsala University
Uppsala University is a research university in Uppsala, Sweden, and is the oldest university in Scandinavia, founded in 1477. It consistently ranks among the best universities in Northern Europe in international rankings and is generally considered one of the most prestigious institutions of...

 in 1872 and stayed there as a lecturer in analytical chemistry until 1877, during which time he toured Sweden and aboard to study the latest developments in organic chemistry. He then went on to become the principal of the Chemical Station and Seed Control Institute at Kalmar
Kalmar
Kalmar is a city in Småland in the south-east of Sweden, situated by the Baltic Sea. It had 62,767 inhabitants in 2010 and is the seat of Kalmar Municipality. It is also the capital of Kalmar County, which comprises 12 municipalities with a total of 233,776 inhabitants .From the thirteenth to the...

, publishing numerous papers on agricultural research dealing with the classification of varieties of oats and corn between 1891 and 1900.

It was towards the age of fifty-four that Atterberg, while continuing his work on chemistry, began to focus his efforts on the classification and plasticity of soils, of which he is most remembered for. Atterberg was apparently the first to suggest the limit <0.002 mm as a classification for clay particles. He found that plasticity to be a particular characteristic of clay and as a result of his investigations arrived at the consistency limits which bear his name today. He also conducted studies aiming to identify the specific minerals that give a clayey soil its plastic nature.

Atterberg’s work on soil classification gained formal recognition from the International Society of Soil Science in a Berlin
Berlin
Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

 Conference in 1913. Two year later a U.S. Bureau of Standards report stated that Atterberg's method was as "as simple a one as could be devised, and...it is well that we should become familiar with it." The U.S. Bureau of Chemistry and Soils adopted it in 1937.

The importance of Atterberg’s work has never been fully realized in his own field of agricultural science, nor in other subjects concerned with clays, such as ceramics. Its introduction to the field of geotechnical engineering
Geotechnical engineering
Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering is important in civil engineering, but is also used by military, mining, petroleum, or any other engineering concerned with construction on or in the ground...

 was due to Karl Terzaghi, who came to realise its importance at a relatively early stage of his research. Terzaghi’s assistant, Arthur Casagrande
Arthur Casagrande
Arthur Casagrande was an Austrian-born American civil engineer who made important contributions to the fields of engineering geology and geotechnical engineering during its infancy...

, standardized the tests in his paper in 1932 and the procedures have been followed worldwide ever since.

He was the uncle of the composer Kurt Atterberg
Kurt Atterberg
Kurt Magnus Atterberg was a Swedish composer. He is best known for his symphonies, operas and ballets. Atterberg once said that: "The Russians, Brahms, Reger were my ideals." His music combines their influences with Swedish folk tunes.-Biography:Atterberg was born in Gothenburg as the son of the...

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