void ratio


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void ratio

[′vȯid ‚rā·shō]
(science and technology)
The ratio of the volume of void space to the volume of solid substance in any material consisting of void space and solid material, such as a soil sample, a sediment, or a powder.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

void ratio

In a soil mass, or the like, the ratio of the volume of the void space to the volume of the solid particles.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The Santo Tomas sand is a uniform sand with a fine content of 1.21%, uniformity coefficient of [C.sub.u] = 4.08, curvature coefficient of [C.sub.c] = 0.98, effective diameter of [D.sub.10] = 0.16 mm, specific gravity of [G.sub.s] = 2.65, maximum void ratio [e.sub.max] = 0.91 and minimum void ratio [e.sub.min] = 0.54.
Compression testing and vane shear testing were combined to show the effect of the void ratio on the compressibility and shear strength of foam-conditioned soil.
Although the particle-crushing-induced complicated system during compression or shearing depends on manifold factors, such as mineralogies, morphology, stress-strain state, void ratio, water content, and test methodologies, but it is consistent with fractal theory in many cases.
Suited for deeper applications, the system's 95 per cent void ratio significantly reduces the footprint of the installations.
Physical Properties of Sample Physical Properties Notation Value Unit Uniformity Coefficient [C.sub.u] 2.32 - Curvature Coefficient [C.sub.c] 0.81 - Moisture Water Content w 23.00 % Bulk Density [[gamma].sub.b] 16.40 kN/[m.sup.3] Dry Density [[gamma].sub.d] 14.10 kN/[m.sup.3] Saturated Density [[gamma].sub.sat] 18.00 kN/[m.sup.3] Specific Gravity [G.sub.s] 2.70 - Maximum Void ratio [e.sub.maks] 0.99 - Minimum Void ratio [e.sub.min] 0.58 - Degree of Saturation S 68.00 % Relative Density [R.sub.D] 26.00 % Table 2.
It sets out best practices for using strain-stress data from the incremental loading of a soil sample in a standardized consolidometer (step-load test), one-dimensional vertical consolidation theory relating Ksat to the coefficient of consolidation (cv), the relation between Ksat and k, and the relation between the porosity and the void ratio of a soil undergoing primary consolidation.
Caption: Concrete Industry Management students mapped the Surface Void Ratio on an as-cast wall in metro New York.
in which M is total mass of the soil, [M.sub.s] is the mass of soil particles, [M.sub.uw] is the mass of unfrozen water, V is the total volume of the soil mass, [V.sub.p] is the volume of the pore, [rho], [[rho].sub.d], and [[rho].sub.s] are soil density, dry density, and soil particle density, n is porosity, e is the void ratio, and [W.sub.u] is the unfrozen water content.
The S-shaped curves were obtained from 75 tests of a total of 30 sands, with a wide range of confining pressure, relative density and void ratio. Hardin and Drnevich (1972a) and Hardin and Drnevich (1972b) proposed two of the most widely used models (i.e.
The basic idea is that the response of a treaded tire is considered as the sum of the responses of two treadless tires with radii equal to the outer and the inner radius of the initial treaded tire, weighted according to the void ratio (the fraction of the voids along the tire perimeter to its total perimeter).
They also examined correlations between various soil properties and strength parameters and found that the mean grain size, sphericity, angularity, and void ratio play a role in the measured friction angles.