Loose sedimentary rocks that are widely used in construction, especially private, are called dresva. The nature of its origin is the result of the natural destruction of rocks, for example, under the influence of water, temperature and weathering. The product is also obtained by crushing by technical means. On the surface, it is a loose scree, at a depth it looks like a fractured rock.
Material characteristic
Dresva - what is it? Rock fragments characterized by high permeability, low strength and low moisture capacity. The material is of natural origin, therefore it does not have a negative chemical effect on the environment, it is harmless to humans, animals and plants. The composition is quite uniform, the color varies from yellow to gray. Fractions ranging in size from 2 to 20 mm, something between sand and small gravel.
One of the main advantages can be attributed to a rather low price for the elimination of crushed stone, due to the lack of expensive methods of production. Essentially, Dresva - what is it? This is a by-product, therefore, its price in comparison with crushed stone is much lower. Although in some regions of Russia, for example, the Sverdlovsk region, raw materials are extracted by one of the most time-consuming and costly methods.
In general, all types of material are prone to shrinkage, are characterized by incombustibility and good drainage properties, which are indispensable for eliminating flooding.
How to use gravel
Due to its low strength, it is impossible to use buildings in large-scale construction, but there are many other areas of application. To cover asphalt, the product is mixed with crushed stone or gravel. In city parks and squares, paths are strewn, and wood is used as a mineral fertilizer for plants in a gardening industry.
The material is used as an effective abrasive for polishing and cleaning metals, in the construction industry as a pillow (base) for laying paving slabs and concrete production, as well as:
- dumping sites;
- in the production of lime and cement;
- concrete filling;
- during the construction of roads.
In short, Dresva - what is it? Continental product, since it is formed without exposure to water, and a special material used to erect the foundation of small structures.
