How does SANIPOR® -Floodgrouting work?

     
The sewer section to be repaired is first cleaned and desilted by flushing with a
high pressure water jet. Then, by CCTV inspection and a water exfiltration test,
the condition of the sewer can be observed and recorded. The length of sewer
under repair and the adjoining house connections are closed off, using
pneumatic rubber plugs.
     


S1 is filled through one manhole into the sewer
system. This behaves like a corresponding
vessel and the liquid will spread into all laterals
equally.


The S1 solution is forced by the hydrostatic head
through all leaks into the bedding material
surrounding the sewer pipe. The S1 is then rapidly
pumped out, leaving defects zones saturated.


The section is immediately refilled with solution S2
which reacts with S1 in the ground. This quickly
forms a concrete-like matrix, binding the soil
particles and consolidating the ground around the
defects.


When the reaction is complete and water tightness
established, solution S2 is pumped out. After
flushing, the sewer is returned to service, its
structure protected from further deterioration.
     
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