Extraction, manufacture and realization of inert materials. River transport across Danuve river. Port authority, port agency, weight-measuring services, etc.
Polaris 8 :: Materials

The extraction is fulfilled from a bucket dredge. The dredge lades the barges with ballast.

The extracted material is in accordance with all requirements of Bulgarian government standard EN 13043:2003.

The ballast produces through washing and sieving to four kinds of additional materials for concrete and construction solutions. They are river sand fraction 0/4 mm and river stones fractions 4/8 mm, 4/16 mm, 16/32 mm with essential characteristics correspond to the requirements of Bulgarian government standards EN 12620:2004, EN 13139:2004:

Product (fraction) 0/4 mm
4/8 mm
4/16 mm
16/32 mm
Granulometric structure category Gf85 Gc80/20 Gc90/15
Gt17,5
Gc85/20
Form of granules category - Sl15 Sl15 Sl15
Density of granules
» Relative density mg/m3 2,66 2,66 2,64 2,65
» Density of dry material, dried in a drying-oven mg/m3 2,63 2,57 2,59 2,60
» Density of soaking material, superficially dried material mg/m3 2,64 2,61 2,61 2,62
Purity
» Fine fraction category f3 (BGS EN 12620)
1 (BGS EN 13139)
f1,5 f1,5 f1,5
» Contents of shells category SC10 SC10 SC10 SC10
Fractionary stability category LA35 LA35 LA35 LA35
Contents of:
» Chlorides % 0,001 0,001 0,001 0,001
» Acid-soluble sulphates category AS0,2 AS0,2 AS0,2 AS0,2
» General sulphur % < 1 < 1 < 1 < 1
» Harmful organic admixtures   none none none none
Absorption of water % < 1 < 1,5 < 1 < 1
Resistance to cold category F1 F1 F1 F1
Resistance of аlkaline-silicon reaction
Contents of rocks and minerals with unstable crystal form of SiO2
mmol/dm3 < 50 < 50 < 50 < 50

We also produce coarse material for road bedding 30/100 mm, apply to the requirements of Bulgarian government standard EN 13043:2003.