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Cubical shape crushed rock

Owing to high consumer properties of the crushed rock obtained through impact-centrifugal crushers, its cubiform shape as well as the advanced surface activity of the particles, its application at concrete production, highway engineering, at manufacture of building constructions makes it possible to reduce significantly material and technical resources, to in-crease the quality of the articles produced.
The technology in question as well as the equipment which is manufactured by SPA «Center» are successfully ap-plied while producing cubiform crushed rock from porphyrite, diorite and other materials for highway engineering in Bela-rus, Russia, Ukraine and Kazakhstan.

The advantages of cubiform crushed rock application

At highway construction:

In road surface building of great and special importance is a shape of pebbles 2-5, 5-10, 10-15 mm in size which is used for an up-per strengthening layer of the road surface. The layer defines the lon-gevity and quality of the road.
The application of cubiform crushed rock at highway engineering and manufacturing of building constructions makes it possible:
 to reduce crushed rock consumption;
 to reduce bitumen and emulsions consumption up to 30%;
 to reduce time and labour expenditures up to 50% at placing as-phalt concrete surfacing;
 to reduce cement consumption;
 to increase several times the service life of a road surface;
 to increase a  cohesion factor up to 0,65-0,71.

In production of concrete

To ensure a high quality of concrete of great importance is a shape of particles of coarse aggregate (crushed rock). It is not to have more than 15% (as to mass) of the grains having a plate-like and a prickly shape.
The conducted tests showed that the application as aggregate of crushed rock obtained by impact-centrifugal crushing makes it possible:
 to reduce water requirement of concrete mix by 3%
 to reduce cement consumption by 5-10 kg/m3;
 to improve the strength of concrete;
 to cut energy expenses for manufacture by 2,5%  on the average, to reduce concrete prime cost by 3% on the average.
It was determined that the application of cubiform crushed rock resulted in the reduction of cement con-sumption per unit durability of concrete by12,5%.