Method and device for foaming ballast beds

Details Method and device for foaming ballast beds Method and device for foaming ballast beds

E - Fixed Constructions

01

B

E01B 1/00 (2006.01)

Patent

CA 2684082

The invention relates to a method and device for partially or completely foaming the hollow spaces in the ballast structure of a ballast bed, below which a subgrade (7) is located, having a reactive plastic, wherein the reactive components are mixed in a high-pressure mixer (1,26) and wherein the start time for the reactive mixture (4) is adjusted such that the foaming process substantially only begins when the reactive mixture has reached the subgrade (7).

L'invention concerne un procédé et un dispositif servant à remplir partiellement ou totalement de mousse les cavités dans la structure d'un lit de ballast sous lequel se trouve une plate-forme (7), et ce à l'aide d'un plastique réactif. Selon l'invention, on mélange les constituants réactifs dans un mélangeur haute pression (1, 26) et on règle le début de la réaction pour le mélange réactif (4) de sorte que le moussage ne commence pratiquement que lorsque le mélange réactif a atteint la plate-forme (7).

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