Betoon
Flow constants
· Permeability- a rate of flow of fluid into a
porous solid of concrete.
· Diffusivity- situation where gas or liquid
will be transmitted through the substance.
· Sorptivity- a process where liquid is
absorbed by capillarity
Curing
Degradation of concrete
· Chemical affects- reactions with sulfates,
sea water, acids and
alkalis
· Physical affects- frost, fire, wind and water
erosion
Degratation of concrete
Frost damage Sea water attack
Durability of steel in concrete
· Shear strenght Corrosion
· Compensate tendons, stressed areas
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