The International Society for Trenchless Technology

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Total: 11 results found.

1. Grouting
(Glossary)
The process of filling voids or modifying/improving ground conditions. Grouting materials may be cementitious, chemical or other mixtures. In microtunneling grouting may be used to fill voids around the ...
2. Spoil
(Glossary)
Earth, rock, and other materials removed during installation. ...
3. Pipe Jacking & Microtunneling
(News/Guidelines)
... capable of independently counter-balancing earth and hydrostatic pressures.  Earth pressure is counter-balanced by careful control of advance rates and excavation rates of spoil materials.  Groundwater ...
4. Close-Fit Slip Lining
(News/Guidelines)
... is possible because of the “memory” properties of thermoplastic materials.  Thermoplastic materials will change shape when force is applied to the material either through the application of compression ...
5. Communication & Outreach
(Pages/Generic)
... educational materials such as technical papers and trenchless glossary of terms, and responding to user inquiries.  ...
6. Joint Grouting
(News/Guidelines)
... surrounding the defects. There are a variety of chemical grouts used for grouting of pipe joints and sewer connections. The grout should be compatible with the pipe materials and soil conditions surrounding ...
7. Ground Pentrating Radar
(News/Guidelines)
... dry sandy or hard materials such as concrete, granite, and dry sandstone. A GPR system is comprised of transmitter located on or near the ground that focuses electromagnetic waves into the ground. The ...
8. ISTT
(News/News head home)
...  What is Trenchless Technology? Trenchless technology covers any techniques, processes or procedures, including the equipment, machines and materials involved, which minimises or eliminates the need ...
9. No-Dig Award
(Uncategorised Content)
... for utility services. They may be concerned with length or speed of drive, accuracy of drilling, materials used, ground conditions dealt with or means of underground detection and mapping services. For ...
...  Accuracy or size of installation; Materials used; Ground conditions successfully dealt with; Improved acceptability for clients, operators and/or environment; Underground detection, recording ...
11. 2015 ISTT No-Dig Award Winners
(Uncategorised Content)
... Drilling Industry Certification And Training course (DICAT) Trenchless HDD Edition in response to HDD industry request for training materials to assist both new and existing employees.  The course ...

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