undisturbed sample

undisturbed sample

A sample of soil that has been obtained by methods in which every precaution has been taken to minimize disturbance to the sample.
References in periodicals archive ?
Three additional new holes were drilled adjacent to above holes to obtain undisturbed sample for metallurgical testing.
Most of the drilling will consist of total probing, with or without rock control, bucket drilling and retrieval of representative (disturbed) and undisturbed samples with the accompanying laboratory examinations.
Faster penetration, nearly undisturbed samples using little or no fluids and its casing advancement system make the LS250 MiniSonic ideal for a variety of applications.
North East civil engineering company Allied Exploration & Geotechnics Ltd has been called in by Banks Mining to drill a series of small diameter boreholes at different locations on the Highthorn site, to the south east of Widdrington, from which undisturbed samples of material can be removed for analysis.
North East civil engineering company Allied Exploration & Geotechnics Ltd (AEG) has been called in by Banks Mining to drill a series of small diameter boreholes at different locations on the Highthorn site, to the south east of Widdrington, from which undisturbed samples of material can be removed for analysis.
In the laboratory, IR was determined on undisturbed samples (n = 48) using a similar approach to that proposed by the Soil Quality Institute (2011) for field determinations.
Depending on the soil conditions, undisturbed samples (soil cores) may be retrieved that are suitable for soil profile description.
This paper analyzes the test results of free vibration column apparatus on 155 undisturbed samples of recently deposited soils taken from the southern area of Jiangsu province in China, including mucky silty clay, clay, silty clay, silty clay and silty sand interbedded strata, silt, silty sand, fine sand and medium coarse sand, during last four years.
Pierre Francus' image analysis method will also be used to study microscopic evidence of over wash by studying undisturbed samples from the cores.
For the latter model, only PSD and soil textural properties are considered and not soil structure, which can obviously affect K measurement using undisturbed samples.
Boart Longyear is carrying out sonic drilling for the collection of undisturbed samples from continuous core for porosity determinations and brine samples for laboratory chemical analyses.
Pits 2 by 2 by 2 m were dug around 2 Eucalyptus grandis trees, 2 m apart, to collect undisturbed samples from the vicinity of roots (Fig.