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A self-healing method of controllable ballastless track

A ballastless track and self-repairing technology, which is applied in the direction of track, track laying, track maintenance, etc., can solve the problem of low controllability of self-repairing material repair, inability to repair internal damage of ballastless track, and difficulty in completely filling repair materials, etc. problems, achieve controllability, save repair materials, and save costs

Active Publication Date: 2017-05-31
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ① Relying on external perfusion of repair materials is only suitable for damage extending to the surface of the ballastless track, and the repair materials are difficult to completely fill the damaged part, and the repair effect is poor;
[0004] ②The internal damage of the ballastless track cannot be repaired
However, self-healing materials have low repair controllability due to various causes of object damage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A self-repairing method of a controllable ballastless track, comprising the following steps:

[0043] Prepare microcapsules containing self-repairing materials for subsequent use;

[0044] Microcapsules have the following properties:

[0045] ①It has sufficient strength, and the microcapsules do not break during the concrete mixing process;

[0046] ② It can be bonded sufficiently with concrete without affecting the overall function of the ballastless track;

[0047] ③Under the condition of specific external temperature field, the microcapsules break and release the self-healing material, realizing the controllable self-healing function;

[0048] Mixing the microcapsules with the ballastless track concrete and pouring into a ballastless track slab, wherein the particle size of the microcapsules is 30-80 μm, the average particle size is about 50 μm, and the microcapsules account for 5% of the weight percentage of the ballastless track concrete;

[0049] A specific tem...

Embodiment 2

[0051] A self-repairing method of a controllable ballastless track, comprising the following steps:

[0052] Prepare microcapsules containing self-repairing materials for subsequent use;

[0053] Microcapsules have the following properties:

[0054]①It has sufficient strength, and the microcapsules do not break during the concrete mixing process;

[0055] ② It can be bonded sufficiently with concrete without affecting the overall function of the ballastless track;

[0056] ③Under a specific external electric field condition, the microcapsules break and release the self-healing material, realizing the controllable self-healing function;

[0057] Mix the microcapsules with ballastless track concrete and pour them into ballastless track slabs, wherein the particle size of the microcapsules is 20-70 μm, the average particle size is about 50 μm, and the microcapsules account for 7% of the weight percentage of the ballastless track concrete;

[0058] Detect ballastless track slab...

Embodiment 3

[0060] A self-repairing method of a controllable ballastless track, comprising the following steps:

[0061] Prepare microcapsules containing self-repairing materials for subsequent use;

[0062] Microcapsules have the following properties:

[0063] ①It has sufficient strength, and the microcapsules do not break during the concrete mixing process;

[0064] ② It can be bonded sufficiently with concrete without affecting the overall function of the ballastless track;

[0065] ③Under the specific external magnetic field conditions, the microcapsules break and release the self-healing material, realizing the controllable self-healing function;

[0066] Mix the microcapsules with ballastless track concrete and pour them into ballastless track slabs, wherein the particle size of the microcapsules is 30-80 μm, the average particle size is about 60 μm, and the microcapsules account for 10% of the weight percentage of the ballastless track concrete;

[0067] Detect ballastless track...

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Abstract

The invention relates to the field of ballastless track repair, in particular to a controllable self-repair method for ballastless track, comprising the following steps: mixing repair materials with ballastless track concrete and pouring into ballastless track slabs; The performance of the material is selected and the corresponding physical field is applied to the ballastless track slab, so that the repair material can perform its repair function. The present invention provides a controllable self-repair method for ballastless track. The ballastless track slab is made by mixing the repair material with ballastless track concrete in advance, and then the corresponding physical field is applied to the ballastless track according to the performance of the repair material. On the track plate, the repair material can play its repair function, that is, through human intervention, the repair material can play the repair function when it needs to be repaired, and the controllability of the repair material can be realized. The method is simple and improves the repair of ballastless track damage. The effect is to prolong the service life of the ballastless track.

Description

technical field [0001] The invention relates to the field of repairing ballastless tracks, in particular to a controllable self-repairing method for ballastless tracks. Background technique [0002] In the prior art, when the ballastless track is damaged, it relies on external perfusion repair materials to repair the damage. This fix has the following disadvantages: [0003] ① Relying on external perfusion of repair materials is only suitable for damage extending to the surface of the ballastless track, and the repair materials are difficult to completely fill the damaged part, and the repair effect is poor; [0004] ②The internal damage of the ballastless track cannot be repaired. [0005] Self-healing materials are a new type of material that can repair itself when an object is damaged. The material is injected into the plastic polymer, and when the object cracks, the injected material is released, automatically repairing the damaged object's surface. The core of self-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B29/00E01B1/00
Inventor 王平徐井芒陈嵘曾晓辉卢俊韦凯赵才友肖杰灵马道林刘浩
Owner SOUTHWEST JIAOTONG UNIV