Method of filling an excavated opening

E - Fixed Constructions – 01 – C

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E01C 23/06 (2006.01) E01C 19/02 (2006.01)

Patent

CA 2224277

An excavated opening (10) through a pavement (12) of a highway and through the underlying base material (14) to expose a gas main (16) is filled by (i) mixing on site cement, foaming agent and water to produce a fluid grout (26), (ii) mixing the grout with loose excavated spoil (22) in the opening, (iii) agitating the mixture using a hand-held poker vibrator (30), (iv) and repeating this procedure until the level (40) is reached. The level (40) corresponds to the underside of a protective layer (50) which is subsequently applied. The majority of the excavated loose spoil from the opening is reused.

Procédé permettant de combler une ouverture (10) creusée dans la chaussée (12) d'une route à grande circulation et dans le matériau de base sous-jacent (14) pour mettre à jour une conduite de gaz (16). Le procédé consiste à (i) mélanger sur place du ciment, un agent moussant et de l'eau pour produire un mortier liquide (26), (ii) mélanger dans l'ouverture le matériau d'excavation meuble (22), (iii) remuer le mélange à l'aide d'un vibreur intérieur portatif (30), puis (iv) à recommencer cette procédure jusqu'à ce que le niveau (40) soit atteint. Ce niveau (40) correspond à la surface inférieure d'une couche protectrice (50) qu'on applique ensuite. Avec ce procédé, on réutilise la majeure partie du matériau d'excavation meuble dégagé pour pratiquer l'ouverture.

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