Casing gap sealing device and sealing method

Abstract

The invention discloses a casing gap blocking device. The casing gap blocking device comprises a pipeline, a reinforcing plate, a backing ring and a casing, wherein the casing is sheathed at the exterior of a pipeline; the backing ring is sheathed at the outer wall of the pipeline; the side surface of the reinforcing plate is fixedly connected with the outer wall of the pipeline; the length direction of the reinforcing plate extends along the axial direction of the pipeline; an epoxy mortar filling layer is filled between the backing ring and the external of the reinforcing plate; both sides of the epoxy mortar filling layer are in sealed connection with the inner wall of the casing and the outer wall of the pipeline; epoxy grout sealing layers are sealed at the two ends of the epoxy mortar filling layer; a leakage-blocking rigid waterproof layer is sealed at the outer side of each epoxy grout sealing layer; the epoxy grout sealing layer and the leakage-blocking rigid waterproof layers are in sealed connection with the outer wall of the pipeline and the inner wall of the casing. The sealing property of the casing gap in the casing gap blocking device is improved. The invention also discloses a casing gap blocking method.

Description

technical field [0001] The invention relates to the technical field of civil engineering gap sealing, in particular to a casing gap sealing device. The invention also relates to a casing gap sealing method. Background technique [0002] During civil engineering construction, such as figure 1 As shown in the pool of reinforced concrete structure, the wall of the pool will generally be pre-embedded with the wall casing 02, which is used to penetrate the water in and out of the pool 01, and the casing 02 is buried on the side wall in the concrete structure. A metal pipe section forms a hole for penetrating into the pipe 01, and the inner diameter of the casing 02 is generally about 50 mm larger than the outer diameter of the pipe 01 to be penetrated. Sometimes, when the sleeve 02 needs to pass through the flanged pipe 01, an ultra-wide gap 03 will appear after the penetration. The width of the flange is different according to the diameter of the pipe, generally 50-100mm. The...

AI Technical Summary

Problems solved by technology

[0004] However, due to the dry hard cement mortar, the hard mortar cannot be vibrated, and the compactness is poor; the bonding strength of the mortar / concrete is low, and its bonding firmness with the pipe 01 and casing 02 is poor. The overall loosening of the mortar layer may occur under the action

When the gap is wide, the point contact area of ​​the flat-headed chisel is small, and the point after tamping may be lifted and loosened during the surrounding tamping, which will affect the compactness

When the pipeline vibrates, the rigid material cannot adapt to the deformation and the material has the inherent characteristics of shrinkage and cracking. After long-term use, especially when the width of the casing gap is too large, the material shrinks more, resulting in poor sealing of the casing gap

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