Cement emulsion asphalt mortar and its preparing method as well as application in rilroad and in ballastless track of city light rail

A technology of cement-emulsified asphalt and emulsified asphalt, which is applied in the field of building materials, can solve the problems of limited sources, complicated production process, and high price, and achieve the effects of improved irrigation performance, simple production process, and high fluidity

Inactive Publication Date: 2003-10-01
CHINA RAILWAY 11TH BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are similar products in foreign countries, there are disadvantages such as the raw materials used require special manufacturers, are made by special processes, the source is limited, and the price is high; different emulsified asphalt is required to be used under different temperature conditions, and the production process is complicated.

Method used

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  • Cement emulsion asphalt mortar and its preparing method as well as application in rilroad and in ballastless track of city light rail
  • Cement emulsion asphalt mortar and its preparing method as well as application in rilroad and in ballastless track of city light rail
  • Cement emulsion asphalt mortar and its preparing method as well as application in rilroad and in ballastless track of city light rail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0036] Real

Embodiment 1

[0038] Mixing ratio of emulsified asphalt:

[0039] Asphalt 600 g octadecyl trimethyl ammonium chloride 10 g

[0040] Polyvinyl alcohol 0.8 g water 390 g

[0041] The preparation process of emulsified asphalt is as follows figure 1 :

[0042] 1. Weigh A-100 bitumen and heat it for dehydration before use. The temperature of bitumen heating and dehydration should be controlled below 100℃. Asphalt should be heated with warm fire to avoid deterioration of asphalt coking. Asphalt must be completely dehydrated, no air bubbles on the surface, and in a calm state. The heating temperature must be controlled at 140°C~165°C before it can be emulsified. It must be filtered with a screen to remove impurities.

[0043] 2. Heat the water to 45℃~75℃.

[0044] 3. Weigh out the emulsifier octadecyl trimethyl ammonium chloride (stir well before use to avoid uneven effective content each time) and stabilizer polyvinyl alcohol.

[0045] 4. Dissolve the emulsifier octadecyl trimethyl ammonium chloride...

Embodiment 2

[0062] Mixing ratio of emulsified asphalt:

[0063] A-70 pitch 600 g cetyl trimethyl ammonium bromide 9 g

[0064] Polyvinyl alcohol 0.7 g water 390 g

[0065] The production process of emulsified asphalt is as described in Example 1.

[0066] Preparation of cement emulsified asphalt mortar: (The ratio of raw materials is shown in Example 2 in Table 1)

[0067] The admixture used is a U-shaped concrete expansion agent produced by Wuhan Good New Materials Co., Ltd. in Hubei Province; the water reducing agent used is FFT water reducing agent, and the defoaming agent used is dibutyl phosphate.

[0068] The preparation method and the pouring construction method of the cement emulsified asphalt mortar are the same as in Example 1.

[0069] The composition ratio of the raw materials in Example 3-4 is shown in Table 1. The production process of emulsified asphalt, the preparation method of cement emulsified asphalt mortar, and the pouring construction method are the same as in Example 1....

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Abstract

A cement-emulsified asphalt mortar used for railway and overhead railway in urban area contains cement and its additive, emulsified asphalt, sand, water, water-reducing agent, aluminium powder, surfactant, defoaming agent, polyacrylic fibres and chlorobutadiene latex. Its preparing process is also disclosed. Its advantages are high flowability, high strength and freeze-thawing resistance, and no environmental pollution.

Description

Technical field [0001] The present invention belongs to building materials. Specifically, it is a cement emulsified asphalt mortar used for ballastless tracks of railways or urban light rails and a manufacturing method thereof. Background technique [0002] The basic structure of the ballastless track of railway or urban light rail is: laying a concrete foundation on the bridge deck, and erecting a track slab on the concrete foundation. The bottom of the track slab is 5 cm from the top surface of the concrete foundation. This kind of building material is a key component of the elastic adjustment layer of the railway or urban light rail ballastless track structure. Its standard requirements are quite high and there are more than a dozen technical indicators. Currently, there is no domestic production of this material. Although there are similar products abroad, the raw materials used require specialized manufacturers, are made by special processes, have limited sources, and are ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/06C04B16/06C04B24/24C04B26/26C04B28/02
Inventor 邹振华傅代正黄金田何长安杨进华吴久义郑新国龚安波杨世军杨德军唐希峰张庆许建军顾秋来彭勇峰
Owner CHINA RAILWAY 11TH BUREAU GRP
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