Bas alt is a natural stone. Most often found near volcanoes. The largest deposits are found in Russia, Ukraine, America, the Hawaiian and Kuril Islands. In nature, bas alt occurs in the form of plates, shapeless and rounded stones, as well as lava flows.
What is bas alt?
This is a rock that has certain characteristics. Let's list them:
- Feldspar and augite are the main constituents of bas alt.
- Colors: dark gray, black, asph alt, and there are also specimens with a greenish tint.
- At zero temperature, the specific heat is 0.85 J/(kg K).
- Resistance ranges from 50-400 MPa.
- The elasticity of the material is within 0, 2-0, 25.
- Melting point varies, some have 1000-1200°C, others 1500°C.
- Bas alt is a stone with a density of 2500 to 2900 kg/m2.
- Moisture absorption fluctuates between 0.25-10%.
Bas alt composition: features
Every person knows from the time of school that all minerals have a certain structure. As a rule, when considering them, both the chemical composition and the mineral composition are taken into account. This makes it difficult to distinguish bas alt, granite, marble, etc. in appearance, but to have the most complete information about their technical characteristics. It is this knowledge that helps to ergonomically apply this or that material.
The composition of any bas alt includes climopyroxene, titanomagnetite, volcanic glass, plagioclasite, magnetite. Its structure is distinguished by a porphyritic surface, sometimes aflated. In this case, sometimes there are species smooth as glass. These criteria are influenced by the location of bas alt deposits. Those that are on the surface are most often bubbly, since during the cooling of volcanic lava, vapors and gases escape through these holes. Subsequently, minerals such as copper, prehnite, calcium, zeolite can be deposited in hollow places. Scientists have identified such formations in a certain form, called amygdala.
The mineral composition of bas alt taken from different deposits can vary significantly. This is mainly due to the presence of certain impurities in it. For example, the structure of some is distinguished by the presence of pyroxene prisms, thanks to which the bas alt acquires a black color. But olivine crystals color the stone in a yellow-green hue. It should be noted that the size of impurities can reach ¼ of the total mass. Less common are bas alts, which include minerals such as hornysnag, apatite, orthopyroxene.
Popular species
Bas alt is a generic name. It combines many different types. The most common ones are:
- Asian is an inexpensive stone widely used in interior design and architecture. Its color is predominantly the color of "wet asph alt".
- Twilight - large deposits are in China. It is dark gray, even black. It is considered the highest quality type of environment of all others, since it has a high level of resistance to temperature extremes, mechanical damage, humidity fluctuations, etc.
- Moorish - almond stone look. On its surface it has a wide variety of inclusions. The color scheme is mostly green. The appearance of such bas alt is quite original, which allows it to be used to decorate rooms and buildings. However, it is worth noting that its technical performance is somewhat inferior: frost resistance and hardness are low.
- Bas altin is the most common type. Large deposits are located near Rome. Refers to the most expensive materials. It has an original surface, which allows it to be widely used in the architectural field. In terms of strength, such bas alt can be compared with granite; after laying, it retains all its inherent qualities for a long time.
Scope of application
Bas alt is a fairly common material,which is widely used in various fields. The main one is architecture. But also high-quality building materials are made from it, added to concrete mortars for strength, or used during the pouring of slabs. Bas alt is often used as a finishing material for floors or paths. And for the insulation of buildings from the outside, it is simply irreplaceable. Most designers pay due attention to bas alt when decorating rooms. It is widely used in the decoration of fireplaces, walls. With this solution, it is easy to place accents and bring contrast to the interior.
Benefits of bas alt
This type has many advantages. Most significant:
- noise reduction;
- vapor permeability;
- high level of thermal stability;
- environmentally friendly;
- high-quality thermal insulation;
- strength;
- does not electrify;
- fire safety;
- durability.
Bas alt based products
Grey bas alt is mined in mines and quarries. Most often this is done by the mining industry. After withdrawal, it is sent to special enterprises, where various products are made directly from bas alt. These can be sandwich panels, tiles, frames for stairs, fibers for insulation of roofs and other surfaces. Bas alt is also used for the construction of columns, arches, statues. Its powder is added during the production of reinforced products to ensure their reliability and strength.
And finally the cost
Bas alt, the price of which, unlike other natural materials, is considered quite affordable, can be widely used without increasing the cost of the object. For example:
- bas alt gravel - from 250 to 400 rubles. per pack;
- facing plates - from 2000 rubles. for 1 sq. m;
- bas alt paving stone - 3200-3500 r. for 1 sq. m.
