The International Society for Trenchless Technology

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Total: 7 results found.

1. Flood Grouting
... solution is pumped out leaving the defect and nearby soil saturated with the solution. The sewer section is refilled with a second chemical solution, which reacts with the first quickly forming a concrete-like ...
2. Leak Detection
... One system employs an in-the-pipe acoustic sensor tethered to monitoring equipment located above ground, which traverses the pipe with the product flow. The second system uses a free-swimming sensor that ...
3. Localized Sealing
... by stainless steel retaining rings or cylinders. The second type of localized seal is used to seal connections between mains and laterals. These seals use a fabric gasket or liner impregnated with resin, ...
4. Join ISTT
(Uncategorised Content)
... and benefits of ISTT membership described above.For adding a second person to the list, please contact, after becoming the member of ISTT.Please contact us at, if you have any ...
5. Why Trenchless? ('No-Dig')
(Uncategorised Content)
... and people suffer. But wait just a second. Look again. Did you notice those covers in the road? If there are access points to the underground networks why not use them? Here is same repair being undertaken ...
6. 2015 ISTT No-Dig Award Winners
(Uncategorised Content)
... until it overlapped with the end of the first liner, the joint was sealed manually with glass matt and resin. The second liner required 48 hours to cure because of the huge volume of water required and ...
7. ISTT Membership Benefits
(Uncategorised Content)
... of you. Beginning in 2010, Corporate membership annual dues will be substantially reduced from £250 ($412) to only £70 ($115). In addition, Corporate members may, at no additional cost, add a second ...

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