A tunnel waterproofing construction method

E - Fixed Constructions – 21 – D

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E21D 11/10 (2006.01) E21D 11/38 (2006.01)

Patent

CA 2411271

A tunnel waterproofing construction method characterized in that a primary spray cement concrete is sprayed onto the excavation surface of the tunnel, a normal-temperature vulcanization-type rubber emulsion is sprayed on said primary spray cement concrete surface, a normal-temperature vulcanization-type rubber film is formed and a secondary coating cement concrete is established on that surface. The tunnel excavation surface may also be lined by with a primary spray cement and a buffer-water conductive layer may also be established in the primary spray cement concrete surface.

L'invention concerne un procédé de construction d'étanchéification de tunnel caractérisé en ce qu'un béton de ciment de pulvérisation primaire est pulvérisé sur la surface d'excavation du tunnel, une émulsion caoutchouc du type vulcanisable à température ambiante est pulvérisée sur ladite surface de béton de ciment de pulvérisation, une pellicule de caoutchouc du type vulcanisable à température ambiante est formée, et un béton de ciment de revêtement secondaire est créé sur cette surface. La surface d'excavation de tunnel peut également être revêtue d'un ciment de pulvérisation primaire, et une pellicule conductrice d'eau tampon peut par ailleurs être créée sur la surface de béton de ciment de pulvérisation primaire.

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