Rubble - a material, widely used in construction, which is produced from a variety of mountain ranges by their crushing. It is divided into species origin and fractions.
Technical indicators
Choosing a suitable option rubble, except for the size of the stones, should pay attention to the technical properties of the material. According to the guests at the rubble recovered the following list of specifications:
degree frost
characterizes, as rubble is able to maintain its structure and its properties at alternate freezing and thawing. According to the degree of resistance to frost rubble is divided into the following types:
- Has a high level of stability, which include F200, 300 and 400;
- Having high resistance - they belong to F50, 100 and 150;
- With a low level of stability, which are F15 and 25.
degree of strength
shows, a load value capable of withstanding rubble. Depending on the degree of strength, it is classified into:
- heavy-duty;
- high strength;
- lasting;
- with moderate strength;
- with a small degree of strength;
- with a very low strength.
flakiness
This feature is the main and most important indicator of the quality of rubble, according to which the consumer sees the percentage of plate and needle particles in the total volume of stones. The fewer, the higher the quality of the material. According flakiness rubble has the following classification:
- I-I - cubiform;
- II-I - Superior;
- III-I - the usual.
The best is a gravel I-st group, since it is easier compacted and has high strength. Cubiform rubble is the optimal one for the foundation of roads and manufacturing.
Types of gravel, depending on the species
Assuming, a mountain range used for the manufacture of building rubble, it is classified into several varieties.
Limestone
This species is also called dolomite rubble. Its production is carried out by crushing quarry rock sedimentary, buy rubble limestone Absolute can be so in the company: +7 495 532 00 95.
note! Dolomite does not have high strength indicators, but it is relatively inexpensive. It is widely used for the manufacture of building lime, in the production of mineral fertilizers, during the manufacture of steel, etc..
granitic
To obtain used granite rock. This kind of rubble with a reddish tinge, and has uneven faces, that provides reliable coupling with a cement mortar composed.
gravel
To obtain sifted quarry rock or resorting to undermining the rocks. Rubble has a grayish color, and may belong to different factional groups.
slag
waste used for making, formed in the chemical industry and in metallurgy, as well as in the combustion of solid fuels. It has a high density and a large moisture absorption ratio.
shale
For its production uses volcanic rocks. slate chippings – it rocks, having a flat and elongated configuration. The material may have different colors.
Secondary
For its production is crushed garbage, resulting in the construction of. First of monolithic structures are removed and the valve metal elements by their split, and then proceed to fragmentation.
Types of rubble on fractions
Crushed size is divided into several types.
Gravel chippings divided into the following fractions:
- from 3 to 10 mm - sifted;
- from 5 to 20 mm - for small-largest product (tiles for sidewalks, etc.);
- from 20 to 40 mm - for the creation of larger concrete and reinforced concrete structures made of reinforced concrete and concrete.
We crushed granite to a size larger.
- small fraction (5-20 mm) - demand in solid construction;
- Srednefraktsionny (20-40 mm) - to create w / w and concrete structures;
- Krupnofraktsionny (40-70 mm) - when creating objects of industrial production and the roadway;
- rubble from 70 mm (ham) - as decorating elements (manufacture of stone fences);
- fractions to 5 mm are optimal for road construction.
Areas of use
Today rubble actively used at all stages of the construction of buildings and pavements. Applying gravel provides high quality durable and strong constructions, which has a positive effect on the security built structures.
Crushed found effective application in landscape design. Small fraction material is suitable for use as backfill when decorating flower beds, pond or stream, as well as for the construction of an alpine slide. Gravel coarse fraction can be nice to lay a track or garden fence.
