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Emulsified pitch and preparing method

A technology for emulsified asphalt and bitumen, which is used in building components, building insulation materials, buildings, etc., can solve the problems of difficult use of CA mortar, short working time, and insufficient strength, so as to reduce the separation of materials and simplify the production process. , the effect of consistent compressive strength

Inactive Publication Date: 2007-11-14
张洪武
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing emulsified asphalt does not consider the special requirements of CA mortar in the application of high-speed railway slab ballastless track, such as fluidity, working time, early strength and weather resistance, so if it is used as one of the main components in In CA mortar, problems such as short working time, insufficient strength, and mortar segregation are prone to occur, and cannot meet the "Technical Conditions for Emulsified Asphalt Cement CA Mortar of Suiyu Line Slab Ballastless Track" issued by the Ministry of Railways of the People's Republic of China, making the CA Mortar is difficult to use in high-speed railway slab ballastless track

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: A kind of emulsified asphalt, its formula composition is shown in Table 1. Wherein the asphalt is No. 90 heavy traffic road asphalt (penetration is 92, unit is 1 / 10mm); Cationic surfactant is coconut oil amine; Fatty acid methyl ester ethoxylate is palmitoleic acid methyl ester ethoxylate; The stabilizer is strontium chloride; the additive is polyvinyl alcohol. The preparation steps are: heating the asphalt in the proportion to 150°C, dissolving the additive polyvinyl alcohol in boiling water, cooling to 60°C, then dissolving other components in the polyvinyl alcohol aqueous solution to form a mixed aqueous solution, and finally heating the asphalt The emulsified asphalt product in the present invention is obtained by passing through emulsification equipment together with the mixed aqueous solution. The performance test results of the obtained product are shown in Table 2. The testing standards and testing methods are in accordance with "Technical Condition...

Embodiment 2

[0024] Embodiment 2: A kind of emulsified asphalt, its formula composition is shown in Table 1. Wherein the asphalt is No. 120 straight-run petroleum asphalt (penetration is 119, unit is 1 / 10mm); cationic surfactant is 1-aminoethyl-2-heptadecylimidazoline-2 hydrochloride; The ester ethoxylate is methyl tallowate ethoxylate; the stabilizer is ferrous sulfate; the additive is cationic guar gum. The preparation steps are as follows: heating the asphalt in the proportion to 110°C, dissolving the additive cationic guar gum in water at 40°C, then dissolving other components in the cationic guar gum aqueous solution to form a mixed aqueous solution, and finally heating the asphalt The emulsified asphalt product in the present invention is obtained by passing through emulsification equipment together with the mixed aqueous solution. The performance testing standard and testing method of the product obtained are the same as in Example 1, and the testing results are shown in Table 2. ...

Embodiment 3

[0025] Embodiment 3: A kind of emulsified asphalt, its formula composition is shown in Table 1. Among them, the asphalt is Daqing propane deoiled asphalt (the penetration is 70, the unit is 1 / 10mm); the cationic surfactant is hydrogenated tallow propylene diamine; the fatty acid methyl ester ethoxylate is methyl cotton oil ethoxylate Base compound; stabilizer is ammonium sulfate; additive is hydroxyethyl cellulose. The preparation steps are: heating the asphalt in the proportion to 180°C, dissolving the additive hydroxyethyl cellulose in water at 30°C, then dissolving other ingredients in the aqueous hydroxyethyl cellulose solution to form a mixed aqueous solution, and finally heating the asphalt The emulsified asphalt product in the present invention is obtained by passing through emulsification equipment together with the mixed aqueous solution. The performance testing standard and testing method of the product obtained are the same as in Example 1, and the testing results ...

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Abstract

The invention provides an emulsified asphalt, which has the compositions of bitumen, surfactant, additives and water, the content of each component as follows : Asphalt 22 -55% surfactant: cationic surfactant 1.0 - 15 %, non-ionic surfactant 1.0 -20%; auxiliaries 0.1-8%; cushion for water; the ratios are according to the percentage of weight.. The invention of products, in lines with its performance as 'People's Republic of China Ministry of Railways' plate ballastless track emulsified asphalt cement mortar CA technical conditions, ' In the practical use ,which is to avoid CA mortar (that is, cement -- Asphalt mortar) have Segregation and enable CA mortar have a appropriate time to fully meet the needs of the construction, so that the products of this invention can be effectively used for high-speed railway plate ballastless track in the CA mortar.

Description

technical field [0001] The invention relates to a high-speed railway slab ballastless track, in particular to an emulsified asphalt used in cement-asphalt mortar (also known as CA mortar) for a high-speed railway slab ballastless track. Background technique [0002] In the construction of high-speed railways, a large number of slab ballastless technologies are used, and CA mortar in this technology is one of the core technologies. And emulsified asphalt is one of the main components in CA mortar. However, the existing emulsified asphalt does not consider the special requirements of CA mortar in the application of high-speed railway slab ballastless track, such as fluidity, working time, early strength and weather resistance, so if it is used as one of the main components in In CA mortar, problems such as short working time, insufficient strength, and mortar segregation are prone to occur, and cannot meet the "Technical Conditions for Emulsified Asphalt Cement CA Mortar of S...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08J3/03
Inventor 张洪武
Owner 张洪武
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