Natural and artificial gravel
Rubble from natural stone is formed by special crushing of rocks that are developed in quarries. By such crushing, granite, basalt, lime( dolomite), marble and other types of crushed stone are obtained. Many properties of this material directly depend on the shape of the granules obtained during crushing.
Non-natural, it's artificial, crushed stone is produced in the process of processing all sorts of construction debris and waste. This building material is used in the same place as its natural analog, only taking into account some features. Artificial gravel has a lower strength than natural. Therefore, its use is limited and not required for the construction of complex structures.
On the other hand, it is indispensable when mixing concrete, which has a low grade, when sprinkling the lower layers in road construction, as well as in landscape design. In addition, its undisputed advantage can be attributed to low cost, if for comparison, take natural rubble from dense rocks.
Basalt rubble - the strength of volcanoes for the construction of
As you know, granite rubble differs enviable strength and has excellent characteristics for almost all indicators. But there is one important drawback of this material - it's its natural radioactivity. Therefore, its use in the construction of residential buildings, as well as public buildings is strictly limited. At the same time, there is quite a real replacement of this building material, and this is basalt rubble .
This material is obtained by crushing basalt - a volcanic rock with a fine crystalline structure, high thermal conductivity, and strength. Extract rubble of igneous rocks in open pit in special quarries.
This construction material is used in the form of a large-fraction aggregate in the manufacture of heavy concrete, as a lining material, in the construction of a roadway, etc. It is extremely resistant to the influence of an aggressive environment, it is not radioactive, durable, has high thermal conductivity and hygroscopicity.
Dolomite and marble in the service of the builder
There is another rock used to get this building material - it's dolomite. It is a sedimentary rock, in which there are impurities of calcite. Dolomite crushed stone is an environmentally friendly natural material. It is characterized by low water absorption, lack of radioactivity, high frost resistance and strength. It is used not only for the erection of buildings and structures, but also for their interior decoration.
Rubble from rocks, due to various impurities, has a wide range of different colors, which is often used in finishing and facing works.
One of the most popular, ecological and beautiful types of this building material is marble chips of .It has a long list of advantages: durability, frost resistance, hygroscopicity, ecological compatibility;heat resistance;lack of radioactivity and amazing beauty.
Unfortunately, this natural material is extremely unstable to acids, in addition, it quickly loses the outer gloss. Due to its advantages, the area of application of marble chips is quite wide:
- production of mosaic-concrete floors;
- exterior and interior decoration of buildings and structures;
- as a soil in terrariums and aquariums;
- in landscape design;
- as sidewalk pouring in ice, etc.
Rubble from natural stone is an essential component in many construction processes, and replacement of this material in these cases for any other in the near future is not expected.