Betoon
Sand
Water Chemical admixtures
Field of application
Concrete is used in...
· Pavements
· architectural structures
· Foundations
· roads
· Bridges
· marine- and parking
structures
· brick/block walls
· footings for gates
fences
Three Georges Dam
· The world largest concrete construction
· China, river of Yangzte, 2006
· 2,335m long, 101m high
Possible threats
Physical Chemical
· Frost · Sulftates,
· Wind · Sea water,
· Waves · Acids,
· Fire · Alkali-silica
reactions
Primary transport mechanism through
concrete
Gas diffusion
Water vapour diffusion
Water vapour diffusion
Ionic diffusion
Water absorption
Ionic diffusion
Ionic diffusion
Water permeability
Flow constants
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