Waterproofing: Key to SCL tunnel lining design

摘要

[...] both of the concrete layers are acting together. [...] the primary and secondary linings contribute to the load bearing capability of the tunnel, unlike when using sheet systems Research carried out by Morgan Sindall, both in its Underground Professional Services division at Rugby and supported by further work at Warwick University to test this theory, have shown that two concentric rings of sprayed concrete, bonded together by Stirling Lloyd's Integritank HF tunnel waterproofing membrane, behave in the same way as a monolithic ring of the same dimensions.