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Composite material and method for waterproofing maintenance of ballastless track using composite material

A ballastless track and composite material technology, applied in the field of materials, can solve the problems of brittle cracking of the coating surface and concrete vibration, and achieve the effects of resisting concrete vibration, strong shear stress and good adhesion.

Active Publication Date: 2018-11-16
YUGREAT (BEIJING) INTERNATIONAL TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the coating is relatively rigid, the concrete will vibrate when the train passes by, which will cause the surface of the coating to be brittle

Method used

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  • Composite material and method for waterproofing maintenance of ballastless track using composite material
  • Composite material and method for waterproofing maintenance of ballastless track using composite material
  • Composite material and method for waterproofing maintenance of ballastless track using composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] refer to figure 2 , which shows a schematic diagram of the structure of the crack after the crack is repaired by the method according to the embodiment of the present invention. figure 2 Among them, the black vertical structure at the lower part of the base surface is the crack 4 of the ballastless track. The non-curing rubber asphalt material 3 is added to the crack 4 after cleaning. When the added non-curing rubber asphalt material 3 Addition was stopped when the top surface was flush with the base surfaces on both sides of the crack. After the filling is completed, brush a layer of polyethylene polypropylene fiber 2 with a thickness of 0.7mm on the top surface of the non-cured rubber asphalt material 3 as an isolation layer, and the length and width of the isolation layer are respectively greater than the length of the crack. and wide, figure 2 The protruding part above the middle crack 4 is the isolation layer composed of brushed polyethylene polypropylene fibe...

Embodiment 2

[0092] refer to Figure 4 , which shows a schematic diagram of the crack structure of the ballast bed slab after the crack treatment is performed by the method according to the embodiment of the present invention. Figure 4 The two black vertical structures at the lower part of the base surface of the middle groove are cracks 4, and the non-curing rubber asphalt material 3 is added to the cracks 4 after cleaning. When the top of the added non-curing rubber asphalt material 3 When the surface is flush with the base surfaces of the grooves on both sides of the crack 4, stop adding, use silicone sealant to seal the crack 4, and then paint a layer of non-curing rubber asphalt material 3 with a thickness of 0.7mm polyethylene polypropylene fiber 2 is used as the isolation layer, and epoxy resin 5 with a thickness of 0.2 mm and a width of 100 mm is brushed on both sides of the isolation layer. After spraying experiments, it is found that when spraying directly, there is no way to a...

Embodiment 3

[0094] When repairing the expansion joints of the high-speed rail ballastless track, among the expansion joints after cleaning, the expansion joints are first sealed with silicone sealant, and then the non-curing rubber asphalt material is added. Stop adding when the top surface of the non-cured material is flush with the base surfaces of the grooves on both sides of the crack, and then lay a layer of silicone oil paper with a thickness of 0.3mm on the surface of the added non-cured material as an isolation layer, and brush on both sides adjacent to the isolation layer Epoxy resin with a thickness of 0.15mm and a width of 100mm, after brushing the bonding layer, quickly paste rubber asphalt waterproof prefabricated rolls on the surface of the isolation layer and the bonding layer, and then use butyl tape to seal the adjacent The lap joints of the above-mentioned rubber asphalt waterproof prefabricated coils are processed, that is, the maintenance of the entire expansion joint i...

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Abstract

The invention provides a composite material and a method for conducting ballastless track waterproof maintenance by adopting the composite material. The method comprises the steps that a gap of a ballastless track is cleaned, and the cleaned gap is filled with a non-curing rubber asphalt waterproof material; an isolation material is laid on the top face of the non-curing rubber asphalt waterproof material to form an isolation layer; concrete base surfaces on the two sides of the isolation layer are coated with binding materials to form binding layers; after the concrete base surfaces are coated with the binding materials, the surfaces of the binding layers and the isolation layer are coated with rapid hardening rubber asphalt waterproof materials or sticky rubber asphalt waterproof prefabricated coiled materials. According to the composite material and the method for conducting ballastless track waterproof maintenance, the good adhesive force of the gap maintained through the method is ensured, powerful shearing stress caused when a train passes the gap at high speed can be effectively resisted, and the composite material is flexible, can effectively resist concrete vibration caused when the train passes the gap at high speed, is not prone to brittle surface factures, and ensures safety usage of the ballastless track.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a composite material for waterproof maintenance of ballastless track and a method for using the composite material to perform waterproof maintenance of ballastless track. Background technique [0002] The use of trains has brought great convenience to people's travel. At present, ballastless tracks have been widely used in the laying of train tracks. The ballastless track structure mainly includes a concrete support layer and a reinforced concrete track bed slab. The support layer and the track bed slab are constructed independently, the concrete surface of the support layer is roughened within the width of the track bed slab, and the track bed slab is a reinforced concrete structure with continuous construction and no expansion joints. The contact surface between the bottom of the ballast bed slab and the support layer is a rough surface, and there is mutual constraint betwee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B37/00C08L95/00C08L21/00
CPCC08L95/00C08L2205/035E01B37/00C08L23/34C08L23/20C08L91/06C08K2003/265C08K2003/267C08K5/12C08L21/00
Inventor 罗莹莹李晓亮王彦秋
Owner YUGREAT (BEIJING) INTERNATIONAL TECHNOLOGY CO LTD
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