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A rapid repair method of cement emulsified asphalt mortar for longitudinal slab ballastless track

A technology of cement emulsified asphalt and slab ballastless track, which is applied in the direction of track, track laying, track maintenance, etc., to achieve the effects of fast curing speed, low viscosity and high repair efficiency

Active Publication Date: 2016-09-14
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the lack of repair method of cement emulsified asphalt mortar for longitudinal slab ballastless track in the prior art, the present invention proposes a quick repair method for cement emulsified asphalt mortar of longitudinal slab ballastless track

Method used

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Embodiment Construction

[0021] A quick repair method of cement emulsified asphalt mortar for longitudinal slab ballastless track. The method mainly includes the steps of cleaning the gap, setting the grouting port, closing the gap, grouting the gap, and cleaning the edge. The specific steps are as follows: Use high-pressure air to clean the dust and impurities around the joints of the cement-emulsified asphalt mortar, and set the grouting port on the interface between the mortar and the bottom of the track slab or the base / supporting layer by pasting the grouting nozzle or drilling a hole to bury the grouting pipe. Determine the distance between the grouting ports according to the length of the mortar gap. When the gap length is less than 6.5m, the gap between the grouting ports should be 65cm. , When using drilling to bury the grouting pipe, the drilling depth is 10-20cm. Then use fast-curing acrylic cement, epoxy resin cement or polyurethane cement to seal the gap area. The sealing material require...

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Abstract

The invention relates to a method for rapidly repairing an open joint of cement-emulsified asphalt mortar of a longitudinally-connected-plate type ballastless track. The method mainly includes the working procedures of open joint cleaning, grouting opening forming, open joint closing, open joint grouting, edge cleaning and the like, and particularly includes the steps that dust and impurities on the periphery of the open joint of the cement-emulsified asphalt mortar are removed, a grouting opening is formed in the open joint, then an open joint area is closed through rapidly-solidified joint closing materials, after the joint closing materials are solidified, double-component polyurethane grouting materials are injected into the open joint by a double-component self-mixing grouting machine through the grouting opening, after open joint grouting is completed, the grouting opening and the redundant joint closing materials are removed, and repairing work is completed. The method has the advantages of being high in construction efficiency, good in repairing effect, capable of achieving rapid repairing within the skylight time and the like, is suitable for repairing the open joint of the cement-emulsified asphalt mortar of the longitudinally-connected-plate type ballastless track and is also suitable for rapidly repairing an open joint of a concrete structure of a layered structure.

Description

technical field [0001] The invention belongs to the field of maintenance and repair of high-speed railway works, and in particular relates to a quick repair method for cement-emulsified asphalt mortar of longitudinal-connected slab-type ballastless track, in particular to a longitudinal-connection that can be completed within the skylight time of the operation period and meets the requirements for opening to traffic A rapid repair method of cement emulsified asphalt mortar for slab ballastless track. Background technique [0002] The longitudinal slab ballastless track structure is widely used in the construction of high-speed railways in my country. The first high-speed railway Beijing-Tianjin intercity railway in my country adopted the longitudinal slab ballastless track structure. The high-speed railway, Hebeng Passenger Dedicated, Jinqin Passenger Dedicated, Shanghai-Hangzhou Passenger Dedicated, Nanjing-Hangzhou Passenger Dedicated, etc. all adopt longitudinal slab balla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B31/00
CPCE01B1/002E01B31/00E01B2204/09
Inventor 易忠来李化建谢永江温浩靳昊谭盐宾程冠之
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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