Conference Dates

November 17-20, 2019


Shotcrete forms the basis of lining systems for sealing purposes, in tunnel applications as well as on excavated slopes of reservoirs etc. Levelling uneven subsurfaces of rock or gravelly fills, shotcrete provides a surface of a certain quality, meeting static requirements. Nevertheless, depending on the type of construction, hydraulic aspects require additional measures to fulfill the requirements on sealing purposes and thus the long-term performance of the entire structure. Membranes made from polyethylene, which are perfectly suited for long-term performance, are of high sensitivity against puncture stress resulting from uneven surfaces. Besides the improvement of shotcrete surfaces themselves, protection liners are often required to reduce extra costs for grouting and injection as well as for maintenance in the medium and long term.

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