dilatancy


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dilatancy

[dī′lāt·ən·sē]
(chemistry)
The property of a viscous suspension which sets solid under the influence of pressure.
(geology)
Expansion of deformed masses of granular material, such as sand, due to rearrangement of the component grains.

dilatancy

The expansion of cohesionless soils when subject to shearing deformation.
References in periodicals archive ?
The angle [phi] is the constant friction angle and [phi] is the dilatancy angle which has to be set to zero so that a reasonable result can be obtained in modeling masonry wall under shear-compression.
This model is enhanced here to capture the dilatancy behavior.
Under normal stress of 38 kPa and at the percent sand of 0 and 10 the dilatancy behavior of samples changed to a contractive behavior with further horizontal displacement.
The dilatancy behavior of all samples under normal stress of 76 and 152 kPa continued at a constant rate with further horizontal displacement and then at the end the rate decreased.
2), we may observe that both opoka and silica fume suspension additives reduce the dilatancy of cement paste.
Microsilica and plasticizing admixtures influence on cement slurry dilatancy, Materials science (Medziagotyra) 14(2): 143-150.
Note that the reduction in the void growth due to the matrix dilatancy considered in Jeong and Pan (19) is eliminated in Eq 19 because the dilatancy factor [Beta] is taken as 0 because of the reported small plastic dilatancy of plastics as pointed out earlier.
The best value of the dilatancy angle was determined as zero.
The adjusted values of cohesion, angle of internal friction, and dilatancy angle of concrete were selected to be 9.
Recent work by Kalyon and Yilmazer (65) and Metzner (66) stated that the effect of fillers on the viscosity of highly filled polymeric suspensions induces wall slip, flow instabilities, yield stresses, and dilatancy.
Kalyon and Yilmazer (65) and Metzner (66) also described the effect of dilatancy (or shear thickening) for some highly filled suspensions, via steady shear sweeps.