A value for porosity can alternatively be calculated from the bulk density ρbulk and particle density ρparticle:
Normal particle density is assumed to be approximately 2.65 g/cm3, although a better estimation can be obtained by examining the lithology of the particles.
If you were to graph particle size and porosity, it would be a constant slope (horizontal line).Porosity is not affected by particle size.
Bulk density generally increases with soil depth due to increasing pressure from the soil column above. Porosity is inversely related to bulk density, thus porosity should decrease as soil depth increases.
Bulk density is defined as the weight per unit volume of material. Bulk density is primarily used for powders or pellets. The test can provide a gross measure of particle size and dispersion which can affect material flow consistency and reflect packaging quantity. Bulk Density ASTM D 1895 B
400 Kg/m3
The specific density of zeolites range from ~ 2.2 - 2.5 g/cc depending upon the composition. For most aluminosilicate materials a value of 2.4 g/cc is usually fairly safe for early estimations (back-of-the-napkin calculations). The bulk density of zeolites typically range from 0.8 - 1.1 g/cc depending upon the porosity of the zeolitic framework.
If you were to graph particle size and porosity, it would be a constant slope (horizontal line).Porosity is not affected by particle size.
for beans
Bulk density is the dry mass of the solids (M sub t) / total volume (V sub t) Particle density is bulk density (P sub b) / 1 minus total porosity (1-theta).
Bulk density generally increases with soil depth due to increasing pressure from the soil column above. Porosity is inversely related to bulk density, thus porosity should decrease as soil depth increases.
Concerning the second Question: "Can you find bulk density with just this info?"Purely on mathematical insight and analysis:Yes, you should be able to find the bulk density of dry soil, given the 'dry overall' and the 'particle' densities.When wet, there is not enough 'given'Also some should be known about the (or your) definition of porosity
Dry density (DD) is related to the moisture content (MC) using the following: DD = DB / (1+MC) Where DB is the bulk density of the material.
Bulk density is to find in Wikipedia: http://en.wikipedia.org/wiki/Bulk_density Real density is here to find: http://www.istone.ntua.gr/Training_courses/wp1/real_density.html Apparent density is here to find: http://www.bulk-online.com/Forum/showthread.php?threadid=6440
The solid density of iron ore generally lies between 3.35 and 5.6 tonnes per cubic metre, depending on the particular characteristics of the ore being considered. When the ore is broken up, air spaces are formed between the particles of ore, and the "apparent" density will be lower. The loose bulk density is one measure, the compacted bulk density is another, and the fluidised bulk density is yet another. The loose bulk density is measured on a sample of loose ore, that has not been allowed to self-compact over time, and has not been mechanically compacted. It will generally measure between 50% and 60% of the value of the solid density.
Bulk density = dry weight / volume, then by knowing the dry weight and bulk density we can calculate the volume.
Calculate volume of molecule, calculate mass of molecule, compare to bulk density. Lower bulk density indicates empty space.
bulk density depend on that material from which soil formed. so maximum bulk density depend on particle density of that mineral. Therefore,we can only tapped the soil upto perticle density. so maximum bulk density may be occur at equal to paricle density.
It is the difference between the density of a bulk sample, and the density of a homogenous piece of the material being measured.The difference between the density of a pile of gravel, and one stone from the pile, for example. the pile is less dense.Or styrofoam peanuts versus polystyrene plastic, the same material in a different form.Used more in engineering, for things like earthfill, coal hauling, etc.