Emulsified asphalt for CRTS I and CRTS II slab ballastless tracks and preparation method of emulsified asphalt

A technology of slab ballastless track and emulsified asphalt, which is applied to building components, building insulation materials, buildings, etc., to achieve good workability, good durability, and high storage stability

Inactive Publication Date: 2013-08-07
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

Chinese patent application 2009100176818.0 discloses an emulsified asphalt, which is obtained by emulsifying asphalt with emulsifiers such as anionic emulsifiers, nonionic emulsifiers, and zwitterionic emulsifiers. The effect is good, but it is only suitable for longitudinal emulsification. Slab-type ballastless track, that is, CRTSⅡ cement emulsified asphalt mortar
At present, there is no related patent on emulsified asphalt for cement emulsified asphalt mortar of CRTS Ⅰ and CRTS Ⅱ slab ballastless track

Method used

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  • Emulsified asphalt for CRTS I and CRTS II slab ballastless tracks and preparation method of emulsified asphalt
  • Emulsified asphalt for CRTS I and CRTS II slab ballastless tracks and preparation method of emulsified asphalt
  • Emulsified asphalt for CRTS I and CRTS II slab ballastless tracks and preparation method of emulsified asphalt

Examples

Experimental program
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Effect test

Embodiment 1

[0037] In this example, 70# heavy traffic road petroleum asphalt is used as the asphalt, the cationic emulsifier is made of tallow propylene diamine and aminated lignin at a mass ratio of 2 / 3, and the nonionic emulsifier is alkyl nonyl Phenolic polyoxyethylene ether (polymerization degree 30), zwitterionic emulsifier is alkyl tertiary amine salt (alkyl chain length is 10 carbon atoms), mineral emulsifier is bentonite, thickener is hydroxyethyl cellulose ether (molecular weight 40000), the stabilizer is calcium chloride, the polar regulator is polycarboxylic acid with polyester structure and alkylamine (the length of the alkyl chain is 16 carbon atoms) compounded at a mass ratio of 1 / 5, pH Regulator is hydrochloric acid, and its composition is shown in table 2.

[0038] Preparation method of emulsified asphalt:

[0039] Dehydrate 70# heavy traffic road petroleum asphalt at 100°C, and then control the temperature of the asphalt at (130±5)°C;

[0040] Add the emulsifier and thi...

Embodiment 2

[0044] In this example, 90# heavy traffic road petroleum asphalt is used as the asphalt, the cationic emulsifier is bis-octyl / decyl dimethyl ammonium chloride, the non-ionic emulsifier is polyoxyethylene ether (polymerization degree 30), zwitterionic The type emulsifier is alkyl dimethyl betaine (the alkyl chain length is 16 carbon atoms), the thickener is associative polyurethane, the mineral emulsifier is fumed silica, the stabilizer is sodium chloride, and the polarity is adjusted The agent is polycarboxylic acid with polyether structure, and the pH regulator is hydrochloric acid, and its composition is shown in Table 2.

[0045] Preparation method of emulsified asphalt:

[0046] Dehydrate 90# heavy traffic road petroleum asphalt at 100°C, and then control the temperature of the asphalt at (125±5)°C;

[0047] Add the emulsifier and thickener measured in proportion to the water at 60°C, adjust the pH value of the emulsion to the specified value, and control the temperature ...

Embodiment 3

[0051] In this example, the asphalt is modified asphalt with an SBR content of 3%, and the cationic emulsifier is composed of octadecyltrimethylammonium chloride and aminated lignin at a mass ratio of 1 / 1. The emulsifier is octylphenol polyoxyethylene ether (polymerization degree 40), the zwitterionic emulsifier is alkyl imidazoline (the alkyl chain length is 10 carbon atoms), the mineral emulsifier is fumed silica, and the thickener is Polyether (molecular weight 60,000), stabilizer is ammonium chloride, polar regulator is polycarboxylic acid with polyether structure, pH regulator is glacial acetic acid, and its composition is shown in Table 2.

[0052] Preparation method of emulsified asphalt:

[0053] Dehydrate the SBR modified asphalt at 100°C, and then control the asphalt temperature at (165±5)°C;

[0054] Add the emulsifier, thickener, etc. measured in proportion to the water at 70°C, then adjust the pH value of the emulsion to the specified value, and control the tempe...

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Abstract

The invention provides emulsified asphalt for CRTS I and CRTS II slab ballastless tracks of high speed railways, passenger transport lines and interurban railways, and a preparation method of the emulsified asphalt. The emulsified asphalt comprises 55-65 parts of matrix asphalt or modified asphalt, 35-45 parts of water, 0.4-1.5 parts of cationic emulsifier, 0.3-1.2 parts of non-ionic emulsifier, 0.2-1.2 parts of amphoteric ionic emulsifier, 0.2-0.8 part of mineral emulsifier, 0.05-0.3 part of stabilizer, 0-0.2 part of thickener, 0-2.0 parts of pH modifier, and 0.1-1.2 parts of a polarity adjuster which is compounded of alkylamine and polycarboxylic acid surfactant. The emulsified asphalt has good storage stability and adaptability and also has the most significant characteristic that CRTS I and CRTS II cement-emulsified asphalt mortars can be prepared from the emulsified asphalt at the same time; two prepared mortars have good working performance, mechanical property and endurance quality; and the emulsified asphalt is suitable for the slab ballastless tracks, especially for the slab ballastless tracks of high speed railways, passenger transport lines and interurban railways.

Description

technical field [0001] The present invention relates to an emulsified asphalt for CRTS Ⅰ and CRTS Ⅱ slab ballastless tracks and a preparation method thereof, in particular to a cement used for preparing CRTS Ⅰ and CRTS Ⅱ slab ballastless tracks for high-speed railways, passenger dedicated lines, and intercity railways Emulsified asphalt for emulsified asphalt mortar and a preparation method thereof. Background technique [0002] In the current high-speed railway construction process in my country, slab ballastless track has become one of the main track structures of high-speed railways. It is mainly composed of concrete base, cement emulsified asphalt mortar cushion, track slab, fasteners, rails and other structures. 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 facili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C08L95/00C08L9/06C08J3/03C08L53/02
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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