bulk dry specific density
bulk dry specific density
bulk dry specific density
Bulk Specific Gravity - Pavement Interactive
AASHTO T 166: Bulk Specific Gravity of Compacted Bituminous Mixtures Using Saturated Surface-Dry Specimens; ASTM D 2726: Bulk Specific Gravity and Density of Non-Absorptive Compacted Bituminous Mixtures; Figure 1. HMA samples in three conditions.
What is the relationship between bulk density and specific ...
Water is used to determine Specific Gravity. The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. Density = Mass / Volume. Specific gravity is the density of a substance divided by the density of...
Bulk density - Wikipedia
OverviewSoilSee alsoExternal linksThe bulk density of soil depends greatly on the mineral make up of soil and the degree of compaction. The density of quartz is around 2.65 g/cm³ but the (dry) bulk density of a mineral soil is normally about half that density, between 1.0 and 1.6 g/cm³. In contrast, soils rich in soil organic carbon and some friable clays tend to have lower bulk densities (<1.0 g/cm³) due to a combination of the low-density of the organic materials themselves and increased porosity. For instance, peat soils have bulk densities from 0.02 g/cm³ to 0.98 g/cm³.
The bulk density of soil depends greatly on the mineral make up of soil and the degree of compaction. The density of quartz is around 2.65 g/cm³ but the (dry) bulk density of a mineral soil is normally about half that density, between 1.0 and 1.6 g/cm³. In contrast, soils rich in soil organic carbon and some friable clays tend to have lower bulk densities (<1.0 g/cm³) due to a combination of the low-density of the organic materials themselves and increased porosity. For instance, peat soils have bulk densities from 0.02 g/cm³ to 0.98 g/cm³. Bulk density of soil is usually determined from a core sample which is taken by driving a metal corer into the soil at the desired depth and horizon. This gives a soil sample of known total volume, $${\displaystyle V_{t}}$$. From this sample the wet bulk density and the dry bulk density can be determined. For the wet bulk density (total bulk density) this sample is weighed, giving the mass $${\displaystyle M_{t}}$$. For the dry bulk density, the sample is oven dried and weighed, giving the mass of soil solids, $${\displaystyle M_{s}}$$. The relationship between these two masses is $${\displaystyle M_{t}=M_{s}+M_{l}}$$, where $${\displaystyle M_{l}}$$ is the mass of substances lost on oven drying (often, mostly water). The dry and wet bulk densities are calculated as Dry bulk density = mass of soil/ volume as a whole $${\displaystyle \rho _{b}={\frac {M_{s}}{V_{t}}}}$$Wet bulk density = mass of soil plus liquids/ volume as a whole $${\displaystyle \rho _{t}={\frac {M_{t}}{V_{t}}}}$$The dry bulk density of a soil is inversely related to the porosityof the same soil: the more pore space in a soil the lower the value for bulk density. Bulk density of a region in the interior of the earth is also relate
