What factors affect porosity and permeability?

Porosity and permeability are related properties of any rock or loose sediment. Both are related to the number, size, and connections of openings in the rock. More specifically, porosity of a rock is a measure of its ability to hold a fluid.

What are the two factors of permeability?

Factors Affecting Permeability of Soil

  • Size of Soil Particle.
  • Specific Surface Area of Particles.
  • Shape of Soil Particle.
  • Void Ratio.
  • Soil Structure.
  • Degree of Saturation.
  • Water Properties.
  • Temperature.

What are the factors of porosity?

The porosity of a soil depends on several factors, including (1) packing density, (2) the breadth of the particle size distribution (polydisperse vs. monodisperse), (3) the shape of particles, and (4) cementing.

What are the three factors of permeability?

The permeability of a membrane is affected by temperature, the types of solutes present and the level of cell hydration.

Which of these factors affect the porosity and permeability of concrete?

Previous studies show that gradation, particle size of aggregate, and mass ratio of aggregate to cement are the primary factors affecting porosity, permeability and compressive strength of PCPC.

What factors affect porosity of rocks?

Several factors can affect porosity. In sedimentary rock and sediments, controls on porosity include sorting, cementation, overburden stress (related to burial depth), and grain shape.

What factors affect permeability of cell membrane?

In this article, it is shown that membrane permeability to water and solutes is dependent on the temperature, medium osmolality, types of solutes present, cell hydration level, and absence or presence of ice.

What factors affect permeability of rocks?

Rock permeability depends on ambient pressure, temperature and deviatoric stresses. In sedimentary rocks the permeability is affected by quartz content, gravel fractions and grain sorting. There are two different permeability models for rocks: the capillary model of pores and the fracture model.

What two factors affect porosity?

The principal factors that control porosity are grain size and shape, the degree of sorting (a well-sorted sediment has a narrow range of grain size), the extent to which cement occupies the pore spaces of grains and the amount of fracturing.

What are the factors on which permeability of membranes depends?

The factors on which the permeability of a membrane depends on are:

  • Temperature.
  • The size of the substance.
  • Charge.
  • Solubility in lipid.
  • Presence of channels and transporters in the cell membrane.
  • Polarity.

On which factors the permeability of soil depends?

A number of factors affect the permeability of soils, from particle size, impurities in the water, void ratio, the degree of saturation, and adsorbed water, to entrapped air and organic material.

What factors affect permeability of concrete?

There are three major factors that influence the permeability of concrete :

  • Water to Cement ratio. Ad.
  • Compaction of Concrete. When concrete is adequately compacted, air-voids and trapped bleed water in concrete are eliminated.
  • Curing of Concrete.
  • Other Factors.