Emulsified asphalt for ballastless slab track in severe cold region and preparation method thereof

A technology of slab ballastless track and emulsified asphalt, which is applied to building components, building insulation materials, buildings, etc., to achieve good workability, perfect microstructure, and improve compactness and watertightness

Inactive Publication Date: 2013-04-24
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although some patents on emulsified asphalt for high-speed railway cement emulsified asphalt mortar have been published in recent years, there is no relevant patent related to emulsified asphalt for slab ballastless track cement emulsified asphalt mortar in severe cold areas

Method used

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  • Emulsified asphalt for ballastless slab track in severe cold region and preparation method thereof
  • Emulsified asphalt for ballastless slab track in severe cold region and preparation method thereof
  • Emulsified asphalt for ballastless slab track in severe cold region and preparation method thereof

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Effect test

Embodiment 1

[0043] In this embodiment, the emulsified asphalt adopts 70# heavy traffic road petroleum asphalt, the cationic emulsifier is octadecyltrimethylammonium chloride, and the nonionic emulsifier is alkyl nonylphenol polyoxyethylene ether, polyoxyethylene polymerized Degree 30, zwitterionic emulsifier is cocamidopropyl betaine, mineral emulsifier is bentonite, thickener is cellulose ether (molecular weight 40000), stabilizer is calcium chloride, interface modifier is polycarboxylic acid With alkylamine, the pH regulator is hydrochloric acid, and its composition is as shown in Table 5.

[0044] Preparation method of emulsified asphalt:

[0045] Dehydrate 70# heavy traffic road petroleum asphalt at 100°C, and then control the temperature of the asphalt at 120°C-130°C;

[0046] Add the emulsifier and thickener measured in proportion to the water at 65°C, then adjust the pH value of the solution to the specified requirements with hydrochloric acid, and control the temperature of the e...

Embodiment 2

[0051] In this embodiment, the emulsified asphalt adopts 90# heavy traffic road petroleum asphalt, the cationic emulsifier is bis-octyl / decyl dimethyl ammonium chloride and aminated lignin, and the nonionic emulsifier is fatty acid polyoxyethylene ester, thickening The agent is cellulose ether and polyurethane, the mineral emulsifier is bentonite, the stabilizer is sodium chloride, the interface modifier is Span 20 and polycarboxylic acid, and the pH regulator is hydrochloric acid. The composition is shown in Table 5.

[0052] Preparation method of emulsified asphalt:

[0053] Dehydrate 90# heavy traffic road petroleum asphalt at 100°C, and then control the temperature of the asphalt at 120°C-130°C;

[0054] Add the emulsifier and thickener measured in proportion to the water at 60°C, adjust the pH value of the solution to the specified value, and control the temperature of the emulsifier solution to 50°C-60°C;

[0055] Pour the measured emulsifier solution into the cleaned e...

Embodiment 3

[0059] In this embodiment, the emulsified asphalt adopts 110# heavy traffic road petroleum asphalt, the cationic emulsifier is octadecyl trimethylammonium chloride and octadecyl dimethyl propamide, and the nonionic emulsifier is polyoxyethylene Ether, polyoxyethylene polymerization degree 40, zwitterionic emulsifier is lauryl imidazoline betaine, thickener is polyether, stabilizer ammonium chloride and calcium chloride, interface modifier is polycarboxylic acid, pH regulator Be glacial acetic acid, its composition is as shown in table 5.

[0060] Preparation method of emulsified asphalt:

[0061] Dehydrate 110# heavy traffic road petroleum asphalt at 100°C, and then control the temperature of the asphalt at 120°C-130°C;

[0062] Add the emulsifier and thickener measured in proportion to the water at 60°C, then adjust the pH value of the solution to the specified value, and control the temperature of the emulsifier solution to 50°C-60°C;

[0063] Pour the measured emulsifier ...

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Abstract

The invention provides emulsified asphalt for a ballastless slab track in a severe cold region and a preparation method thereof. The emulsified asphalt comprises the following ingredients by mass portion: 55-65 portions of matrix asphalt or modified asphalt, 35-45 portions of water, 0.1-1.0 portion of stabilizer, 0-1.0 portion of thickening agent, 0-2.0 portions of pH regulator, 0.1-1.5 portions of interfacial modifier, 0.6-1.8 portions of cationic emulsifier, 0.4-1.2 portions of non-ionic emulsifier, 0-1.0 portion of optional amphoteric ionic emulsifier and 0-0.6 portion of mineral emulsifier, wherein the emulsifier amounts to 1.0-4.0 portions. The emulsified asphalt has the advantages of high stability, good thermal adaptability, wide material adaptability, strong adhesive force with aggregate and the like, does not significantly influence the hydration of cement after the emulsified asphalt is mixed with the cement and sand, and is suitable for the ballastless slab track, particularly the ballastless slab tracks of CRTSI type high speed railways, passenger transport lines and interurban railways in the severe cold region.

Description

technical field [0001] The present invention relates to an emulsified asphalt for slab ballastless track in severe cold areas and a preparation method thereof, in particular to an emulsified asphalt for preparing cement emulsified asphalt mortar for slab ballastless track in severe cold areas and its preparation method. Background technique [0002] At present, my country is in the period of large-scale high-speed railway construction. Among the 20,000 kilometers of high-speed railways, passenger dedicated lines and intercity railways announced by the Ministry of Railways, the slab ballastless track has more than 4,000 kilometers, which has become one of the main track structures of my country's high-speed railways. one. Among them, cement emulsified asphalt mortar is a key component of slab ballastless track. On the one hand, it plays the role of filling, supporting, bearing, and transmitting force, and provides appropriate elasticity and toughness. On the other hand, it fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L7/00C08L53/02C08L9/06C08L11/00C08L9/00C08L23/22C08J3/03C04B26/26
Inventor 李海燕吴韶亮邵丕彦贾恒琼李洪刚王涛魏曌刘子科
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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