What is crushed stone? Sooner or later, any person asks the question. So, crushed stone is such a loose material similar to grains size more than a centimeter. Minute it after crushing certain rocks. By the way, its weight is calculated by the formula: uv = weight of crushed stone3). T. e. each type of crushed stone has its own weight, which depends on the material and its location. Thus, crushed stone is divided into the following types:
The first, gravel. He is mined in the rocks. True, it is as durable as the other type is granite, but it has a low radiation background. This type of crushed stone, in turn, is divided into chopped and gravel.
The granite type of crushed stone has a grain structure and is the most durable. It is extracted from the rock, and is used in construction and as jewelry, t. To. has a beautiful and heterogeneous structure, as well as many pretty shades. Such gravel has even a separate brand – m 400. The following types of granite crushed stone are distinguished – small, medium and large.
There is also limestone crushed stone, which is obtained after crushing sedimentary rocks, and is used for the construction of roads and the production of reinforced concrete.
There are also two more types: secondary and slag.
Secondary crushed stone, in fact, is formed after the processing of construction waste. The source materials are very inexpensive, or rather, these are: bricks, old asphalt and concrete areas. Its strength is even lower than that of gravel and granite. It is used to strengthen the soil, as well as for landscaping, and including for the construction of roads.
Well, now the last form is the slag crushed stone. It is a product of erupting metallurgical slag. It is used exclusively for filling concrete, because it contains various types of toxins (astringent, metallurgical).
But in any case, to choose you based on the goals of application for a certain type of work. It should also be taken into account that each species differs among themselves as the price category.