Results 171 to 180 of about 6,226 (230)
Geoderma, 2020 Continuous estimates of penetrometer resistance (Q) would be useful in root elongation and in soil management studies. However, penetrometers produce estimates of penetration resistance at discrete time points.
Tusheng Ren, W R Whalley
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The dependence of soil penetrometer pressure on penetrometer size
Journal of Agricultural Engineering Research, 1981Abstract A set of 5 penetrometer probes with diameters ranging from 1·000 to 2·000 mm was used on remoulded and undisturbed field soils. For remoulded and uniformly-packed soil cores, the 1 mm probe had to exert a pressure typically 45–55% greater than a 2 mm probe. This effect was similar in soils ranging from heavy clay to sand.
G.M. Whiteley, A.R. Dexter
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Advances in Archaeological Practice, 2015
AbstractThe identification of earthen house floors or living surfaces during archaeological field investigations can be hampered by the scale of excavation, variable fieldworker experiences, and any number of site formation processes. Furthermore, although time- and context-sensitive sampling protocols (e.g., those required of macrobotanical and ...
Anthony P. Graesch +2 more
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AbstractThe identification of earthen house floors or living surfaces during archaeological field investigations can be hampered by the scale of excavation, variable fieldworker experiences, and any number of site formation processes. Furthermore, although time- and context-sensitive sampling protocols (e.g., those required of macrobotanical and ...
Anthony P. Graesch +2 more
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Transactions of the ASAE, 1978
ADSTRACT AN electrically operated soil penetrometer was designed for evaluating soil strength condition across a profile width of at least 3.0 m and a depth of at least 0.8 m. A record of penetrometer force versus depth was made by the use of a 30-deg cone pene-trometer in conjunction with appropriate transducers.
null L. A. Smith, null W. T. Dumas
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ADSTRACT AN electrically operated soil penetrometer was designed for evaluating soil strength condition across a profile width of at least 3.0 m and a depth of at least 0.8 m. A record of penetrometer force versus depth was made by the use of a 30-deg cone pene-trometer in conjunction with appropriate transducers.
null L. A. Smith, null W. T. Dumas
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The Penfeld seabed penetrometer
Europe Oceans 2005, 2005IFREMER has developed a new seabed penetrometer which is able to carry out in situ geotechnical measurements in deep water with a depth of investigation of 30 metres below the sea bottom. After trials in testing pool and on land, the Penfeld penetrometer was tested twice in the Mediterranean Sea, 25 miles south of Nice on a site where cores were ...
J. Meunier +3 more
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Offshore Technology Conference, 2000
Abstract There is today no operational system able to perform geotechnical measurements with standard 36 mm CPT cones in deep sea with a depth of investigation of 20 to 30 metres below the sea-bed. The advantage of the new system is that it will allow surveys in deep sea in a more cost-effective manner.
J. Meunier, D. Sangouard, B. Lhuillier
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Abstract There is today no operational system able to perform geotechnical measurements with standard 36 mm CPT cones in deep sea with a depth of investigation of 20 to 30 metres below the sea-bed. The advantage of the new system is that it will allow surveys in deep sea in a more cost-effective manner.
J. Meunier, D. Sangouard, B. Lhuillier
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Techniques for sealing cone penetrometer holes
Canadian Geotechnical Journal, 1995Direct penetration exploration tools such as the electric cone penetrometer (CPT) and piezocone (CPTU) are being increasingly used for site investigation studies to evaluate stratigraphy and obtain groundwater samples. Most of these techniques are considered full-displacement direct-push or direct-drive penetration methods which can leave open ...
LUTENEGGER, AJ, DeGroot, DJ
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2015
This chapter covers one of the most popular insitu tests, the cone penetrometer test (CPT). A brief description of different types of tests has been provided. The piezocone test, an advanced CPT, is described including the test procedure and the parameters obtained in the field.
Jay Ameratunga +2 more
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This chapter covers one of the most popular insitu tests, the cone penetrometer test (CPT). A brief description of different types of tests has been provided. The piezocone test, an advanced CPT, is described including the test procedure and the parameters obtained in the field.
Jay Ameratunga +2 more
openaire +1 more source
2010
A static cone penetrometer was modified to incorporate a small diameter triaxial geophone package. This instrument was evaluated by obtaining downhole shear wave velocity profiles at selected research sites on the Fraser River Delta near Vancouver B.C. for the purpose of determining in-situ dynamic shear moduli.
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A static cone penetrometer was modified to incorporate a small diameter triaxial geophone package. This instrument was evaluated by obtaining downhole shear wave velocity profiles at selected research sites on the Fraser River Delta near Vancouver B.C. for the purpose of determining in-situ dynamic shear moduli.
openaire +1 more source