scholarly journals Determination of the Parameters of the Natural Stress Stateof Clay Soils by a Probe with a Lateral Stress Module

2021 ◽  
pp. 43-54
Author(s):  
O.I. ISAEV ◽  
R.F. SHARAFUTDINOV ◽  
D.S. ZAKATOV
Keyword(s):  
Clay Soils ◽  
Lateral Stress ◽  
Natural Stress

Determination of the Index Properties of Clay Soils in the Presence of Nanoparticles

2016 ◽  
Author(s):  
James L. Hanson ◽  
Nazli Yesiller ◽  
Amro El Badawy ◽  
Ryne Mettler ◽  
Jared S. Stine
Keyword(s):  
Clay Soils ◽  
Index Properties

scholarly journals Determination of soil moisture by neutron scattering.

1956 ◽  
Vol 4 (1) ◽  
pp. 111-113
Author(s):  
P. Mortier ◽  
M. De Boodt
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Neutron Scattering ◽  
Counting Rate ◽  
Clay Soils ◽  
Moisture Contents ◽  
Rate Versus ◽  
Improved Accuracy ◽  
Slow Neutrons

Curves of counting rate versus moisture content are presented, for sand, loam and clay soils, using (i) a 1000 me Ra-Be source surrounded by a small rigid indium cylinder acting as detector of slow neutrons and (ii) two co-axial Cd cylinders protecting the indium detector. Improved accuracy in the region of low moisture contents was obtained with (ii). (Abstract retrieved from CAB Abstracts by CABI’s permission)

The Colorimetric Determination of Phosphoric Acid in Hydrochloric Acid and Citric Acid Extracts of Soils

1930 ◽  
Vol 20 (4) ◽  
pp. 532-540 ◽  
Author(s):  
R. G. Warren ◽  
A. J. Pugh
Keyword(s):  
Citric Acid ◽  
Phosphoric Acid ◽  
Gravimetric Method ◽  
Potassium Ferrocyanide ◽  
Clay Soils ◽  
Acid Extraction ◽  
Colorimetric Determination ◽  
Colour Development ◽  
Good Agreement

1. The colorimetric determination of phosphoric acid in hydrochloric and citric acid extracts of soils by a method involving the evaporation of the extract, ignition and acid extraction of the residuewith either the Denigès and Fiske-Subbarow methods of colour development was satisfactory only with light soils. Clay soils gave low results owing to the presence of larger amounts of iron.2. A method is given in which the organic matter and iron are removed by treatment with sodium permanganate and potassium ferrocyanide. The results are in good agreement with the gravimetric method.

scholarly journals Determination of radionuclides and elemental composition of clay soils by gamma- and X-ray spectrometry

SpringerPlus ◽  
2013 ◽  
Vol 2 (1) ◽  
Author(s):  
Isinkaye M Omoniyi ◽  
Shitta M B Oludare ◽  
Oderinde M Oluwaseyi
Keyword(s):  
Elemental Composition ◽  
Clay Soils ◽  
X Ray

Water balance in swelling materials: some comments

Soil Research ◽  
1997 ◽  
Vol 35 (5) ◽  
pp. 1143 ◽  
Author(s):  
D. E. Smiles
Keyword(s):  
Water Balance ◽  
Water Content ◽  
Material Balance ◽  
Physical Space ◽  
Clay Soils ◽  
Acid Sulfate ◽  
Retention Ponds ◽  
Material Space ◽  
Semi Arid

Materials ranging from wet tailings in retention ponds through potentially acid sulfate sediments in humid marine environments to clay soils in semi-arid climates shrink and swell with change in water content. This paper discusses the formulation and determination of material balance in such swelling and cracking materials. Significant errors and their likely magnitudes are identified when these estimates are based in physical space, as opposed to material space. Ways in which this problem might be dealt with are discussed.

Sign in / Sign up

Export Citation Format

Share Document