Cement structure containing a waterproofing layer

Details Cement structure containing a waterproofing layer Cement structure containing a waterproofing layer

C - Chemistry, Metallurgy

04

B

C04B 41/71 (2006.01) C04B 41/52 (2006.01) C04B 41/70 (2006.01) E04B 1/66 (2006.01) E21D 11/10 (2006.01) E21D 11/38 (2006.01)

Patent

CA 2243644

A process of providing a waterproof concrete structure comprising the steps of: (a) providing a layer of a concrete composition on a support; (b) spraying on to this concrete composition a waterproofing layer; and (c) applying to the waterproofing layer a further layer of a concrete composition; characterised in that the waterproofing layer is provided by a composition which comprises an aqueous dispersion of coalescable particles of thermoplastic polymer. The method is useful in the waterproofing of tunnel linings.

Pour fabriquer une structure étanche en béton a) on dispose une couche d'une composition de béton sur un support; b) on pulvérise sur ladite composition de béton une couche d'étanchéité; et c) on applique sur la couche d'étanchéité une deuxième couche de la composition de béton. Ce procédé de l'invention se caractérise par le fait que la couche d'étanchéité résulte d'une composition contenant une dispersion aqueuse de particules coalescées d'un polymère thermoplastique. Le procédé est utile comme imperméabilisant pour revêtements de tunnel.

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