Designation

Criterion

Indicators

Weight

Justification

C1

Watertightness

W class, water penetration depth, relative permeability

0.27

key indicator of protection against groundwater

C2

Microcrack self-healing

crack closure ratio, maximum self-healable crack width

0.22

determines the ability to restore tightness

C3

Strength retention

relative compressive strength, no reduction in concrete class

0.15

prevents deterioration of bearing capacity

C4

Frost and water resistance

resistance to water saturation and freeze-thaw cycles

0.13

important for variable moisture and negative temperatures

C5

Constructability

dosage complexity, compatibility with concreting and quality control

0.10

affects reliability of site implementation

C6

Life-cycle economy

initial cost, repair, indirect losses from leaks

0.13

accounts for operating costs, not only material price