Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shrinkage and Swelling Characteristics
Clay swelling and consequential ground heave is a common annual phenomenon in areas where prevailing climatic conditions lead to significant seasonal wetting and drying. The simplest swelling identification test is free‐swell test. In field situations the amount of swelling or shrinkage, or whether any volume change occurs at all, will depend on a number of factors such as moisture content changes, thickness of the deposit, initial density, groundwater chemistry and confining pressures. It is generally recognised that the best indication of the susceptibility of a soil to shrinkage or swelling due to decreases or increases in moisture content is provided by the swelling potential test. Swelling pressure can be determined from a one‐dimensional oedometer test: a number of variations of this test have been developed, but commonly the specimen is flooded and the load required to maintain constant volume is recorded. Alternatively, the swelling pressure can be estimated from empirical relationships with more routinely‐measured parameters.
Shrinkage and Swelling Characteristics
Clay swelling and consequential ground heave is a common annual phenomenon in areas where prevailing climatic conditions lead to significant seasonal wetting and drying. The simplest swelling identification test is free‐swell test. In field situations the amount of swelling or shrinkage, or whether any volume change occurs at all, will depend on a number of factors such as moisture content changes, thickness of the deposit, initial density, groundwater chemistry and confining pressures. It is generally recognised that the best indication of the susceptibility of a soil to shrinkage or swelling due to decreases or increases in moisture content is provided by the swelling potential test. Swelling pressure can be determined from a one‐dimensional oedometer test: a number of variations of this test have been developed, but commonly the specimen is flooded and the load required to maintain constant volume is recorded. Alternatively, the swelling pressure can be estimated from empirical relationships with more routinely‐measured parameters.
Shrinkage and Swelling Characteristics
Carter, Michael (Autor:in) / Bentley, Stephen P. (Autor:in)
Soil Properties and their Correlations ; 151-163
20.09.2016
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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