Posts Tagged ‘Porosity’

This is an important physical characteristic is determined by dividing the sample mass by its volume


Physical properties of building materials
Building materials have complex physical properties. Numerical indicators of the physical properties are determined by special methods and devices.

The physical properties are expressing the ability of materials to respond to the impact of physical factors, gravity, ie, based on the law of gravity, heat, water environment, acoustic, electric, radiation, etc.

The average density characterizes the mass per unit volume of material in its natural state (with pores). This is an important physical characteristic is determined by dividing the sample mass by its volume. For an accurate volume measurement is more convenient to take samples of regular geometric shape, although there are some simple methods of measurement of volume samples and irregular in shape. With wet samples indicated the value of humidity, which determined the average density.

The average density of loose material, such as sand, crushed stone, gravel, called the bulk density. Its magnitude reflects the influence not only the pores in each grain or piece, and interstitial voids in the material volume ryhlonasypannom.

The true density – mass per unit volume of homogeneous material in a completely dense state, ie, without pores, cracks or other cavities, the inherent material in its normal state.

Porosity – the degree of filling volume of the material pores. If you want to Read the rest of this entry »


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