Results 221 to 230 of about 11,155 (262)

Determination of iron(II) in rock, soil and clay

The Analyst, 1979
A rapid and direct method for the determination of iron(II) in silicates is described. Redox processes frequently occurring during decomposition are suppressed satisfactorily by limiting the reaction time to 10 s while maintaining the temperature at 60–65 °C.
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Nanoscale Simulations of Rock and Clay Minerals

Advances in Measurement and Modeling of Soil Behavior, 2007
Nanomechanics has huge possibilities in explaining basic materials response such as creep, friction, rate and temperature dependency. Constitutive models based on nanomechanics have distinct advantages over phenomological models in simulating the response of geomaterials under extreme environments.
Jianfeng Wang, Alok Sharma, Marte S. Gutierrez   +2 more
openaire   +1 more source

Manifestation of rock pressure in diatomaceous clays

Hydrotechnical Construction, 1973
1. Laboratory investigations and full-scale observations showed the weak strength and high deformability of diatomaceous clays. The full-scale observations showed in connection with this that in the case of short cuts for the given tunnel section these clays remain stable for 24–36 h. Thus, it was possible to drive the tunnel in short two-meter cuts
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Diffusion in crushed rock and in bentonite clay: Dissertation

1994
Diffusion theories for porous media with sorption are reviewed to serve as a basis for considering diffusion in simple systems like sand or crushed rock. A Fickian diffusion and linear sorption model is solved both by analytical Laplace transform and Green's function methods and by numerical methods, and then applied to small-scale experiments for ...
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Mineral nanostructures of clay rocks

Doklady Earth Sciences, 2013
V. N. Sokolov, M. S. Chernov
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Response of Clay Rock to Moisture Change

2017
Various kinds of laboratory experiments were carried out on the Callovo-Oxfordian and Opalinus claystones to investigate response of clay rock to moisture change, including swelling and shrinking with variations of the environmental humidity, stress-bearing capability of bound porewater or buildup of swelling pressure, influence of water content on the
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The swelling behavior of clay-sulfate rocks

1998
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998. ; Includes bibliographical references (p. 79-80). ; by Ann S. Chen. ; M.S.
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On the causes of bloating of clay rocks

Glass and Ceramics, 1962
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Slaking behavior of clay-bearing rocks during a one-year exposure to natural climatic conditions

Engineering Geology, 2013
Abdul Shakoor
exaly  

clay rock

2014
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