Elastomeric grouting of subsurface conduits

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 57/00 (2006.01) C08L 21/02 (2006.01) E03F 3/06 (2006.01) F16L 58/10 (2006.01)

Patent

CA 2213088

The present invention provides methods of grouting a subsurface conduit whereby the hardened grout resists stress failures. The methods basically comprise the steps of forming a hardenable grout composition having elastomeric properties upon hardening, placing the hardenable grout composition adjacent to the outside of a subsurface conduit whereby upon hardening the grout composition forms an elastomeric solid support for the conduit and allowing the hardenable grout composition to harden into an elastomeric solid mass.

L'invention présente des méthodes d'injection, autour d'un conduit souterrain, d'un produit de cimentation qui, après durcissement , résiste aux fractures de fatigue. La méthode consiste essentiellement à : créer une composition de cimentation capable de durcir et ayant des propriétés élastomériques dès le durcissement, placer le produit de cimentation autour de la surface extérieure d'un conduit souterrain de sorte qu'en durcissant le produit forme un support élastomérique pour le conduit; et permettre au produit de cimentation de durcir pour devenir une masse élastromérique solide.

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