Method for rapidly repairing cement emulsified asphalt mortar interface connection damage of unit slab ballastless track

A technology of cement emulsified asphalt and ballastless track, which is applied in the direction of track, track laying, track maintenance, etc. It can solve the problems of not distinguishing between longitudinal slab and unit slab, unable to meet the needs of mortar repair, and single construction technology. The method is scientific and reasonable, the repair effect is solid inside and outside beautiful, and the effect of solving the contradiction of curing speed

Active Publication Date: 2015-04-01
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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AI Technical Summary

Problems solved by technology

In the prior art, the types of construction technology are single, and the supporting equipment is too simple, which cannot meet the repair requirements of different deterioration forms and deterioration degrees of mortar, and there is no distinction betw

Method used

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Example Embodiment

[0023] A quick repair method of cement-emulsified asphalt mortar for unit slab ballastless track. The method mainly includes cleaning, sealing, setting grouting openings, joint grouting and edge cleaning. Specifically, high-pressure air is used to clean cement-emulsified asphalt Dust and impurities around the mortar separation gap, and after the separation gap area is embedded with polyethylene foam material, then scrape 2-5mm fast-curing flexible sealing material or spray self-foaming material on the separation gap surface, and then seal it with polystyrene foam. Then set the grouting port by directly inserting the polyurethane pressure-resistant pipe with an inner diameter of 2 to 4mm into the sealing material. The grouting port is set on the interface between the cement emulsified asphalt mortar and the bottom of the track slab or the base / supporting layer. The distance between the grouting ports is 65cm. Place a dial indicator at the four corners of the track plate in the ...

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Abstract

The invention relates to a method for rapidly repairing cement emulsified asphalt mortar interface connection damage of a unit slab ballastless track; the method mainly comprises the steps of cleaning, sealing, setting of grouting openings, interface connection damage grouting and edging treatment; the specific steps are as follows: firstly, cleaning dust and impurities around a mortar interface connection damage; secondly sealing the interface connection damage area, setting the grouting openings and placing a dial indicator at four corners of a track slab in a to-be-repaired area; thirdly, connecting a dual-component self-mixing grouting machine with a pressure grouting hose, and injecting a dual-component grouting material to the grouting openings in sequence; after the mortar comes out of a grouting opening having the spacing of more than the width of the track slab with the next grouting openings, turning to the next grouting opening to grout continuously till the whole cement emulsified asphalt mortar seam area is fully grouted; and finally, cutting the grouting hose, polishing sealed materials to finish the repairing. The method has the characteristics of simple and rapid process, high repairing efficiency and capability of realizing rapid repairing within skylight time and is applicable to repairing the cement emulsified asphalt mortar seams of the unit slab ballastless track.

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 unit slab ballastless track, especially relates to a unit slab ballastless track that can be completed within the skylight time of the operation period and meets the requirements of opening to traffic. A quick repair method for ballast track cement emulsified asphalt mortar. Background technique [0002] The unit slab ballastless track structure has been successfully applied in the construction of high-speed railways in my country. The unit slab ballastless track is used in Guangzhou-Shenzhen-Hong Kong Railway, Harbin-Dalian Railway, and Shanghai-Nanjing Intercity. The unit slab ballastless track is composed of a track slab, a cement emulsified asphalt mortar filling layer, a concrete support layer / base plate, a convex block and its surrounding resin filled parts. As the ad...

Claims

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Application Information

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IPC IPC(8): E01B31/00
CPCE01B29/005E01B2204/01
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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