Classification concrete

by location:
• for concrete-conventional for civil, industrial and agricultural; • for concrete road, road, airports; • for concrete for hydro-dams, locks, harbors, canals; • for concrete with special destination.

Compressive Strength:
• for concrete lower class (reinforced) C4 / 5; • for concrete of clasanormala (armed) 8/10, C12 / 15, C16 / 20, C20 / 25, C25 / 30, C30 / 37; • for concrete high-strength (BIR) -at least C50 / 60.

bulk density of hardened concrete after 28 days dry:
• for concrete heavy, greater than 2500kg / m; • for concrete construction, 2201 … 2500kg / m; • for concrete semi-heavy 2001 … 2200 kg / m; • for concrete lightweight 1001 … 2000kg / m; • for concrete lightweight under 1000kg / m;

after reinforcement:
• for concrete reinforced; • ready-mix armed.

after prestressing:
• for concrete neprecomprimate; • for concrete prestressed.

The main properties of fresh concrete