Geologist, The National Swedish Road and Traffic Research Institute, Linköping,
Engineer, The Geological Survey of Sweden, Uppsala,
Taking representative and sufficient samples of noncohesive soils, for example, gravel, sand, and different types of till from boreholes has always been a problem. In Sweden some samplers with very heavy supplementary equipment were used during the 1950s and 1960s. During the last three years a sampler for noncohesive soils has been developed in Sweden. The sampler has been tested in different soils over the whole country.
The sampler provides samples especially for physical and chemical property tests. The sampled soils, especially the tills, have shown very small disturbances. It has been easy to locate and determine different strata. The visual determination in the field of the grain size distribution has correlated well with laboratory analysis. The large quantities of the samples have resulted in a reliable determination of the soil characteristics. Boulders and stones have been drilled through. Samples of soils below the groundwater level as well as samples of underlying bedrock have been obtained.
Paper ID: GTJ10799J