How to choose concrete

Choose the appropriate class of concrete step by step based on the type of construction, the load and he external contidions. The classes shown are recommended. The actual classes should be specified in an a blue-print that defines the conditions for operation.

Industrial construction

Element/Conditions

Exposed concrete, неармиран, unreinforced without corrosion or aggressive action

Concrete class

X0

Element/Conditions

Reinforced concrete industrial floor, exposed to mechanical load (abrasion/wearing)

Concrete class

XM (XM1, XM2, XM3)

Element/Conditions

Reinforced foundation, exposed to the influence of rain and ground waters

Concrete class

XC2

Element/Conditions

Outside wall, exposed to rain and contamination

Concrete class

XC4, XF2 (XA1), XF1

Element/Conditions

Concrete floor, in a chemically aggressive environment

Concrete class

XA (XA1, XA2, XA3)

Element/Conditions

Zone (ramp), with traffic of heavy machinery and mechanical load

Concrete class

XD3, XM2, XF4

Element/Conditions

Zone (parking), exposed directly to aerosols, containing unfreezing substances and mildly aggressive chemical environment

Concrete class

XF4 (XD3), XM1 (XA2)

Infrastructure building

Element/Conditions

Supporting wallSupporting wall with a direct contact with water and contamination. Weakly aggressive chemical environment

Concrete class

XC4, XF3 (XA1)

Element/Conditions

Deep foundation concrete piles exposed to the influence of ground water and chemically weak aggressive environment

Concrete class

XC2, XA1, XS (XS1, XS2, XS3)

Element/Conditions

Foundation (Base) exposed to the influence of ground water and rain water

Concrete class

XC2, XA1 (XF1)

Element/Conditions

Vertical column (bridge abutment) exposed to the influence of ground waters and aerosols with unfreezing substances

Concrete class

XC4, XF2, XD3 (XS3)

Element/Conditions

Peak construction exposed to water and chlorides, available in the air

Concrete class

XC4, XF2, XD3 (XS3)

Element/Conditions

Socle in contact with water and influence of salts, containing chlorides

Concrete class

XC4, XD3, XF4, XS3

Element/Conditions

Path exposed to the influence of salts, containing chlorides, cyclic wetting/drying unfreezing substances and freezing. Mechanical wearing

Concrete class

XC4, XM1, XD3, XF4

Element/Conditions

Unreinforced ground with floor of concrete under concrete and rubble base with mild chemical wear, exposed to the action of unfreezing substances

Concrete class

XC4, XM1, XD3, XF4

Element/Conditions

Gravitational supporting wall exposed to the action of industrial waters, containing chlorides and aerosols with unfreezing substances

Concrete class

XC4, XD2, XF2 (XA1)

Residential structure

Element/Conditions

Bearing outside wall, exposed to rain and freezing

Concrete class

XC4, XF1

Element/Conditions

Cover concrete slab, with discharge for rain waters and cyclic unfreezing and freezing

Concrete class

XC4, XF1

Element/Conditions

Foundation (base) without danger of freezing, without corrosion or aggressive activity

Concrete class

XC1 (XC2)

Element/Conditions

Concrete slab exposed to the influence of humidity and ground waters, without danger of freezing

Concrete class

XC2 (XC1)

Element/Conditions

Reinforced wall or beam in the inside of the building with low humidity in the air

Concrete class

XC1

Element/Conditions

Reinforced foundation, exposed to the influence of rain and ground waters

Concrete class

XC2 (XC1)

Element/Conditions

Retaining wall of basement, exposed to rain and ground waters in weakly aggressive chemical environment

Concrete class

XC4, XF1 (XA1)

Element/Conditions

Bed of pool, exposed to the effects of waters, containing chlorides

Concrete class

XD2

Element/Conditions

Inside slabwith low air humidity

Concrete class

XC1 (XC2)

Element/Conditions

Outdoor flooring, parkingrain and contamination

Concrete class

XF4

Element/Conditions

Concrete flooring around a pool. Horizontal concrete surfaces, exposed to rain and contamination

Concrete class

XF3