TAC Corporation is one of the world’s leading backfill grout tunnel engineering companies. With roots that go back to the 1930’s in Japan, TAC has a wealth of experience and talent in what is a niche engineering sector. TAC is a privately owned, third generation company which is used to partnering, consulting and advising with multinational general contractors, and TBM machine makers alike. TAC offers turn-key capabilities to projects enabling our customers to find innovative engineering and material based solutions to shielded tunnel projects worldwide. TAC provides a Total Engineering Solution to shield tunnel excavation by desiging and manufacturing in-house high-spec, bespoke backfill grout and additive auto mixing plants concepts, automatic backfill grout injection and control systems, auto additive and foam injection gantry systems, two-component simulataneous backfill grout injection pipes. TAC also provides numerous materials for ground conditioning during and post excavation, as well as holding patented anti-subsidence tunnelling methods for tight curve drives, and loose ground excavation. We pride ourself on our original preliminary engineering services, hands-on commissioning and total field training, full documentation and support for all clients worldwide. With a rich history of successfully completed projects using TAC machinery and design mixes, a deep commitment to excellence, and the purest drive to deliver the highest quality solutions for our clients, you can be sure that TAC will deliver on all promises made. Absolute success in the face of the most difficult ground conditions is what truely makes TAC a world leader in tunnel engineering.
