|
selection of appropriate repair technique
Having assessed the
likely progress and course of corrosion using the
Carbonation
and/or Chloride tools. This needs to be put
into context with the total service life required for the
structure. Please
note that
corrosion may be triggered by a combination of factors which may
include carbonation and
chlorides. If the assessment
indicates that the degree of corrosion of the steel reinforcement will
allow the set 'maximum level of permissible corrosion' to be reached
before the end of the desired service life, an intervention and/or
repair and protection strategy will need to be established. Through a single or
more likely a series of planned interventions, the corrosion can
be controlled such that the time at which damaging corrosion (maximum
permissible) of the steel is reached after the total life of the
structure has been achieved. Activate the Recommendation
tool by clicking the highlighted link. The main inputs
expected within the recommendation tool are the 'Year
of Corrosion Initiation
' deduced from the Time
to Corrosion Initiation analysis, the 'Year
of End of Service Life' from the project
details and checking of either Carbonation
or Chloride depending on
which analysis the year of corrosion initiation is associated
with. The first three
inputs 'Structure
Name, Year of Construction & Year of Survey'
are
essential if you require a record of the recommendation for a report or
future reference. Based on the inputs
submitted to the tool, a report is presented to the
user detailing the most appropriate repair techniques.
The recommendation
may be as simple as providing a new coating every 5 years or may involve a
combination of different repair techniques e.g. patch repair, coatings and
cathodic protection. The text produced within the Recommendation text area can be copied and pasted within a report or a document for future reference. |