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Special emusified asphalt for railway or light underground plated non-fragment rail and its production

A ballastless track and emulsified asphalt technology, applied in the field of materials, can solve the problems of easy delamination, poor temperature adaptability, poor filling performance, etc., and achieve increased compatibility, good temperature adaptability and construction, excellent durability and earthquake resistance The effect of dynamic fatigue performance

Active Publication Date: 2007-04-04
CHINA ACADEMY OF RAILWAY SCI CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An object of the present invention is to solve the emulsified asphalt of the above-mentioned emulsified asphalt cement mortar, which mainly has poor stability, high ionic strength, and poor compatibility with the cement mortar system, so that the prepared emulsified asphalt cement mortar can be used for short working hours and low temperature. Poor adaptability, easy delamination, difficult to expand after 24 hours of pouring, poor filling and other problems, provide a kind of emulsified asphalt cement mortar with good stability, low ionic strength and good compatibility with cement mortar system Long working time, good temperature adaptability, not easy to delaminate, easy to expand, good filling performance, special emulsified asphalt for railway or light rail slab ballastless track

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The formula of mass parts of emulsified asphalt specially used for railway or light rail slab ballastless track is as follows:

[0028] asphalt

water

Emulsifier

stabilizer

pH regulator

thickener

90#

Octadecyl

Propylene diamine

clay

ammonium chloride

hydrochloric acid

polyvinyl alcohol

60

36

2.5

1.2

0.8

0.2

0.5

[0029] The manufacturing process of special emulsified asphalt for railway or light rail slab ballastless track is as follows:

[0030] ① Dehydrate the asphalt and heat it to 130°C, and measure it for later use;

[0031] ②Heat the tap water to 40-70°C and measure it for later use;

[0032] ③Put the weighed emulsifier and stabilizer into the water, add the pH adjuster, stir to dissolve, add the thickener, control the temperature of the emulsion to 35-55°C, and set aside;

[0033] ④ Pour the emulsion into the emulsifier, start the...

Embodiment 2

[0036] The formula of mass parts of emulsified asphalt specially used for railway or light rail slab ballastless track is as follows:

[0037] asphalt

[0038] The manufacturing process of special emulsified asphalt for railway or light rail slab ballastless track is the same as that in Example 1.

Embodiment 3-9

[0040] Raw materials (tons)

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PUM

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Abstract

Special emulsified asphalt for railway or light-rail plated non-fragment rail and its manufacture are disclosed. The process is carried out by emulsifying by mineral, regulating by pH value, building up with other emulsifiers and blending for emulsifier and applier. Its advantages include excellent stability, compatibility, elasticity and endurance and higher ionic strength.

Description

technical field [0001] The invention relates to the field of materials, and relates to emulsified asphalt specially used for railway or light rail slab-type ballastless tracks and a preparation method thereof. Background technique [0002] The slab ballastless track is one of the important structural forms of the railway or urban light rail ballastless track. It is the most mature technology in the world. It is characterized by laying a concrete base on the roadbed and placing a prefabricated track slab on the base. Reserve a gap of 3 to 5 cm, pour emulsified asphalt cement mortar, and form a uniform filling cushion with both rigidity and elasticity after curing. Emulsified asphalt cement mortar is a key component of the elastic adjustment layer of railway or urban light rail ballastless track structure. At present, it is still in the stage of experimental development in China, and there is no product with excellent performance. Although the Chinese patent ZL02139237.4 disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08J3/03C04B24/36E01C9/06
Inventor 李海燕祝和权杜存山沈巍魏曌贾恒琼闫景山
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD
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