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Cement asphalt mortar in use for ballastless track in railroad or city light rail, as well as fabricating method and construction method

A technology of ballastless track and cement asphalt, which is applied in the field of cement asphalt mortar for railway or urban light rail ballastless track and its manufacture and construction, can solve the problems of long working time and volume expansion, and achieve the effect of excellent vibration resistance

Inactive Publication Date: 2005-01-12
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of cement asphalt mortar and its preparation method for railway or urban light rail ballastless track aiming at the deficiency of existing CA mortar, that is to provide a kind of mortar with good fluidity, long working time, no sand and other aggregates. CA mortar that meets the performance requirements of the elastic adjustment layer of ballastless track structure and its preparation method when separation occurs and the volume expands slightly after hardening at the same time

Method used

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  • Cement asphalt mortar in use for ballastless track in railroad or city light rail, as well as fabricating method and construction method
  • Cement asphalt mortar in use for ballastless track in railroad or city light rail, as well as fabricating method and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1--4

[0033] The CA mortar of embodiment 1-4 is prepared according to the mixing ratio of following (table 1) (parts by mass, the same below):

[0034] implement

[0035] in:

Embodiment 1

[0036] The asphalt emulsion of embodiment 1 is nonionic; The asphalt emulsion of embodiment 2 is cationic; The asphalt emulsion of embodiment 3 is anionic; The asphalt emulsion of embodiment 4 is the composite of anion and nonionic asphalt emulsifier and then various asphalts (straight-run asphalt, oxidized asphalt, asphalt composition, petroleum asphalt, coal tar pitch) and nonionic polymers are dispersed in this composite emulsifier to form a uniform and stable emulsifier that meets the requirements of the present invention. Composite emulsion, and the non-ionic polymer in the asphalt emulsion can be one or a mixture of polyacrylic acid, polyurethane, polyvinyl acetate, etc. Its main function is to increase the resin content in the asphalt emulsion, increase the viscosity, and form the so-called emulsion. Polymers play a big role in preventing delamination of CA mortar materials and reducing the amount of added water.

[0037] The cements of Examples 1-4 can be used alone o...

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Abstract

Cement, mixing agent, pitch emulsion, sand (1.90-2.10 portion), water, foaming agent, aluminium powder, AE agent and plasthetics emulsion are mixed by equitable selecting material and matching, compound pitch emulsion agent is added in to make sand aggregate not being separated and has elasticity and excellent vibration strength since that small quantity of nonion polymer is mixed in compound pitch emulsion agent.

Description

technical field [0001] The present invention relates to a composition of mortar, concrete, artificial stone or other similar materials, and materials used as active ingredients in the composition, in particular to filling materials for railway or urban light rail ballastless track and its manufacturing method; The invention also relates to a specific application method of the composite material in construction. But all of them can be classified as vibration and noise reduction materials for railway tracks or urban light rail. Background technique [0002] Rail motor vehicles such as railways or urban light rails are all laid with tracks below the rails, and the tracks of rail motor vehicles are divided into ballast tracks and ballastless tracks now. After the ballasted track is laid, the workload of operation and maintenance is very large, the structure is unstable, and the speed of the train is limited to a certain extent. The use of ballastless track can better solve the ...

Claims

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Application Information

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IPC IPC(8): C04B14/06C04B22/04C04B22/08C04B24/00C04B28/00
Inventor 左景奇蔡彬芬曾凡辉李强军
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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