Method of weighting plastic pipes and weighted plastic pipes

Details Method of weighting plastic pipes and weighted plastic pipes Method of weighting plastic pipes and weighted plastic pipes

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 1/16 (2006.01)

Patent

CA 2692261

Method of weighting of a plastic pipe with a hollow, air- filled wall, a weighted lightweight pipe with a hollow wall, and a pipeline formed by a plurality of weighted, lightweight pipes which are welded together. According to the method the hollow wall of the pipe is filled with a flowing medium which displaces air and which increases the weight of the pipe and which thereby facilitates submerging of the pipe. The flowing medium is suitably a concrete mix which has delayed hardening and low long-term strength. The concrete mix gives reliable weighting of the pipe without external point loadings. The binder of the mix prevents segregation of the aggregate and the material thereby becomes evenly distributed inside the wall of the pipe.

L'invention concerne un procédé pour charger un tuyau en matière plastique ayant une paroi creuse, remplie d'air, un tuyau léger chargé ayant une paroi creuse et une canalisation formée d'une pluralité de tuyaux légers chargés qui sont soudés ensemble. Selon le procédé, la paroi creuse du tuyau est remplie d'un milieu qui s'écoule, ce qui déplace l'air et augmente le poids du tuyau, facilitant ainsi l'immersion du tuyau. Le milieu qui s'écoule est de façon appropriée un mélange de béton qui présente un durcissement retardé et une résistance à long terme faible. Le mélange de béton donne une charge fiable du tuyau sans charges concentrées externes. Le liant du mélange empêche une ségrégation de l'agrégat et le matériau est distribué de manière uniforme dans la paroi du tuyau.

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