Definitions for

**"Bulk Density"****Related Terms:**Apparent density, Specific volume, Density, Particle density, Specific gravity, Relative density, Fluid ounce, Gravity, Cubic centimeter, Mg/m3, Air density, Snow density, Milligrams per cubic meter, Molar volume, Liter, Grains, Ton, Volumetric, Milliliter, Absolute humidity, Linear density, Grain, Minim, Kilogram, Concentration, Cwt, Vapour density, Energy density, Parts per million, Gallon, Capacity, G/t, Tonne, Parts per billion, Sack, Specific energy, Yield, Metric ton, Api gravity, Metric tonne, Gram, Sediment yield, Kip, Volume, Grammage, Litre, Coating weight, Chlorinity, Weight,

Mass per unit volume of soil (sampled as a clod or core), dried to constant weight at 105Â°C. The unit of measurement is usually grams per cubic centimetre. Bulk density is a measure of soil porosity, with low values meaning a highly porous soil and vice versa. Bulk density may be used as an indicator of the structural condition of the soil, with low levels indicating a better state of aggregation than high levels. The range for soils in natural condition would typically be from 1 to 2 grams per cubic centimetre.

Mass of dry soil per unit volume. Bulk volume determined before drying to constant weight at 105Â°C. Usually expressed in g ml â€“1. Of soil weight per unit volume.

Measurement of a sample's mass (weight) per unit volume of space that the sample occupies. Bulk density varies with particle size, moisture content and compacting of the sample.

Mass of powdered or granulated solid material per unit of volume. - Celsius or Centigrade: a unit of temperature.

The weight per cubic foot (or meter) of a resin in pellet or powder form. The bulk density of a material can differ widely from from its solid density. The bulk density of pelletized general purpose (non-impact-modified) polystyrene is about 35 lbs per cubic foot. The density of solid polystyrene is about 1.04 grams per cubic centimeter which would be 64.92 lbs per solid cubic foot. You can closely approximate the amount (weight) of a given material that will be required to make certain part by multiplying the part's size in cubic centimeters by the resin's weight in grams per cubic centimeter. If a material only lists specific gravity, you can multiply by that and get similar or identical results (a resin's specific gravity is often the same or nearly so, as its grams per cubic centimeter.)

mass per unit volume of a solid particulate material as it is normally packed, with voids between particulates containing air.

The mass of dry soil per unit bulk volume (solids plus pores) expressed in g/cm3.

Bulk density is the ratio of the mass of dried soil to its total bulk volume (solids and pores together).

The bulk density (including voids) of the test specimen in kg*m-3 or lb*ft-3. .

Ratio of the mass or weight of dry soil to its volume or bulk. Usually shown as grams per cubic centimetre.

The density (mass per unit of volume) of a resin in solid form (granular, nodular, pellet, powder, etc.) expressed in g/cm3 or lb/ft3.

Weight per unit of volume, usually specified in pounds per cubic foot. Butt log: The log taken from the base of a tree; often slightly irregular.

The mass of a quantity of particulate solid divided by its total volume.

the relationship between the mass (or weight) of a given amount of material and the space it takes up.

Bulk density is defined as the dry mass of soil per unit volume: it is how much a certain volume of soil weighs, including the pore spaces within the soil. The standard measurement is grams per cubic centimetre, or g cm-3.

is the mass per unit volume of a solid, including the voids in a bulk sample of the material.

ASTM D1182-54 test method describes this measurement of mass per unit volume of a molding powder (in large volume determinations).

Synonymous with Apparent Density (U.S.), and Loading Weight (British).

Weight per unit volume. For fuels, this is usually expressed as pounds per cubic foot; for soils, grams per cubic centimeter. see also: Compactness

Weight or mass per unit of volume of a material comprised of many individual particles.

The weight of a material per unit of volume compared to the weight of the same volume of water.

(BD): The total air dry soil mass divided by the total soil volume, (g/cc). Estimated as the 1-SAT (%v air space) times particle density of 2.65 times fraction soil matrix plus 2.65 times gravel fraction.

the mass of a unit volume of soil, generally expressed in gm/cm3. The volume includes both solids and pores. Thus soils that are light and porous will have low bulk densities, while heavy or compact soils will have high bulk densities.

The mass of dry soil per unit bulk volume. The value is expressed as grams per cubic centimeter (g cm-3)

Can refer to the density of the aggregate or the density of compacted asphalt. Typically Asphalt is 2.3 to 2.5 t/m³.

Measurement of soil compaction expressed as a weight per unit of soil (grams per 100 cc).

Mass of dry soil per unit soil volume (combined volume of soil solids and pore space).

The weight per unit volume for a solid materials. Expressed as pounds per cubic foot or grams per cubic centimeter. Untapped bulk density is the lowest attainable density - Tapped bulk density is the highest attainable density for a sample without compression.

The mass of soil per unit of volume.

the mass (weight) of dry soil per unit bulk volume.

Bulk density is the mass of material per unit volume; in logging, it is the density, in grams per cubic centimeter, of the rock with pore volume filled with fluid.

The ratio of the weight of a material to its over-all volume (including any inherent porosity).

The density of soil, i.e., the weight of soil divided by its volume. The BD of agricultural soils normally ranges from 1.0 to 1.6 g/cm3.

The weight of dry soil of a given volume. Bulk density is determined by the texture of the soil, which is inherent, and by soil structure and the amount of soil pore space, which can be changed by management. Compaction increases bulk density by reducing soil pore space.

The mass per unit volume of a moulding powder as determined in a reasonably large volume. The recommended test method is ASTM D1182-54.

The mass of a solid sample divided by its total volume including volume of a solid matter, open and closed pores and interstices. Bulk density is usually expressed as grams per cubic centimeter and measured by placing the sample in a container and subjecting it to specified mechanical compaction method, such as tapping.

The total mass of soil particles and water contained in a unit volume of soil. Units: Mg/m³ = (Ms + Mw) / V where Ms = mass of soil grains Mw = mass of water V = total volume.

Mass of dry soil per unit bulk volume. The volume includes the solid particles and the Pore Space. The Value is expressed as g per cm3 or in SI units as Mg per cubic meter, Mg m_3.

In well logging, it is the density of the rock with the pore volume filled with fluid.

Bulk density a property of particulate materials. It is the mass of many particles of the material divided by the volume they occupy. The volume includes the space between particles as well as the space inside the pores of individual particles.