As a matter of fact, the rubber crumb is a very crushed rubber, the fractions of which in the process of processing have acquired various shapes and sizes. But in the end, they all retain the characteristics of the original material - elasticity, molecular structure. Depending on the technology of production of rubber crumbs, some additional properties can be added, which expand the scope of its application.
As a raw material mainly used car tires that have become unusable. The way of their processing can be different - chemical, physical and chemical. Possible devulcanization( partial) of the upper layer. All this affects the individual characteristics of the final product.
Features
- Relative mechanical crumbliness. The presence of metals does not exceed 0.03%, other materials - 2%.
- Density( bulk) - within the limits of 300-350 g / dm3.
- The maximum humidity is 0,95%.
Scope of application of fine fraction of crumb
0,2 - 0,45 mm
Used as additives, mainly for compositions for the production of rubber goods, for increasing their bending strength, shockproof properties, wear resistance.
0,45 - 0,6 mm
Most often used in enterprises engaged in the manufacture of footwear. As an additive, the proportion of such a powder can reach up to 65% in the total mass of the feedstock.
0,6 - 1 mm
More widely used in the production of building and finishing materials. For example, in the manufacture of certain types of coatings for the roof, waterproofing surfaces. Used as an additive in formulations for the preparation of mixtures, for example, asphalt concrete.
Often used as an ingredient in compositions that increase the strength and durability of the roadway, which prevents the appearance of cracks on it, the occurrence of local deformations, which allows to equip the coating in regions with low temperatures.
Another area of use is the elimination of the consequences of accidents involving the leakage of petrochemical products. It plays the role of an absorbent in the elimination of oil and oil stains that have spread over the surface of the earth.
It is used in the production of various anti-corrosion, sound-proof, vibration-absorbing products. It is a part of various mastics and pastes.
Rubber crumb is used:
- In the form of rolls, mats as a floor covering on children's, sports grounds, filler for boxing bags and pears and the like. In combination with a hard cord, the crumb is used for the manufacture of durable trauma-resistant coatings, various rugs and tracks.
- When manufacturing construction materials - for the production of decorative finishing products, as well as materials for various coatings, including roofing. For example, rolls based on polyurethane and bitumen. In the sale there are tiles with which you can lay out the same garden paths.
- In the process of production of roofing works, rubber crumb is used as a "sprinkling" of the upper layer. This treatment gives additional moisture-repellent, anti-corrosion properties to materials.
- It is incorporated into the means used to seal various joints and seams.
- In the production of fiber-reinforced concrete( installation of bulk floors, foundation pouring) and in other cases.
You can write a lot about rubber crumbs, but all the other areas of its application relate mainly to industrial use( bridge construction, pipeline laying, automotive industry and so on).
