PRODUCT SYSTEM INNER SHELL

The inner shell is applied with in-situ concrete ‎using a tunnel carriage. To strip forms and continue construction activity, the ‎development of high early strength is important. Furthermore, the tunnel inner shell has high requirements on durability. Our specially ‎developed product concept includes high-‎performance superplasticisers that shorten stripping ‎times by providing high early strengths even without heat ‎treatment. Our additives ensure the tightness of ‎the concrete. Our broad range of fibres complete the product system for the tunnel ‎inner shell.‎