An EU-funded project under the framework of European Union's Horizon 2020

TTMJ stands for Tension Track Milled Joint and is an EU-funded project under the framework of Horizon 2020.

The aim of the TTMJ project is to develop, validate and commercialize a new joint system that will provide foundation specialists with the capability to deliver high quality, watertight and safe diaphragm wall joints at lower costs.

The new system, invented and patented by the consortium partner CCMJ System Ltd., offers the possibility to construct profiled joints to increased depth, by maintaining the vertical alignment of the primary panel with a mill or Trimmer that is guided by tracks previously cast into the primary panel (after the secondary panel has been excavated and before it is concreted) ensuring the quality of the joints in the completed diaphragm wall.

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The TTMJ system offers the possibility to construct “perfect” joints to greater depth

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  • TREVI Spa with its considerable experience and know-how in deep foundations, will lead the team, coordinate development, build the prototype Trimmer, and trial it in a full-scale field test.
  • CCMJ Systems will assist in the development and continue to provide innovation to the process, with specific responsibility to complete design of the guide track systems.
  • ARUP bv is the leading specifier of Diaphragm Walling projects worldwide and is providing engineering input and will be responsible for formal validation of the system.

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Latest news

TTMJ : the new diaphragm wall joint system
May 2019:execution of three real scale split tests
The tests were executed using sawn elements with the joint set in horizontal position
TTMJ team at BAUMA
TTMJ team at BAUMA
The TTMJ team has been busy during the days at BAUMA, showing the project's program and the results obtained so far during the field test.

This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 720579.


Via Dismano 5819
47522 - Cesena (FC) - Italy
Forlì-Cesena Chamber of Commerce
Tax Code/VAT Number 00002890408
Share capital € 32.300.000,00 i.v.
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