Handbook for Bridge Inspections - TSP2

9.2 CONCRETE ELEMENTS
Example 9.2-28
Leakage through the bridge deck over a small ,
badl y cast area. The bridge is approx imately 30
years old and has not been salted.
Type of Damage: 207
Leakage/Dampness of Concrete
211
Honeycombing
Degree ofDamagc/Consequcnces: 2M
Cause of Damage: 38
Construction Fault
Procedures:
Installation of new waterproofing layer and wearing
course within five years
Example 9.2-29
Dampness and li me deposits on the underside of the
bridge deck indicate the existence of
leakages/dampness impact for some time. Both the
wearing surface and the membrane are worn
through.
Type of Damage: 207
Leakage/Dampness of Concrete
Degree ofDamagc/Conscqucnces: 2M
Cause of Damage: 82
Conseq uentiaVSccondary Damage
Procedures:
Installation of new waterproofing layer and wea~
ring course within five years.
Example 9.2-30
Leakage between cross ~ beams has been caused by
porous concrete and leaky joints directly above the
c ross~beams. The water has worn away the surface
treatment of the steel.
Type of Damage: 207
Leakage/dampness of Concrete Element
Degree of Da mage & Consequences: 3M
Cause of Damage:
II
Incorrect Choice of Materials 38
Construction Fault
Procedures:
No action is required for the concrete cross~beams.
The joints, however, must be cleaned out and sealed
within three years. In addition, the steel elements
should be painted.
166 Handbook for Bridge Inspect ions