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Emulsified bitumen used for plate-type ballastless track CA mortar and preparation method

A technology of slab ballastless track and emulsified asphalt, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of short working time, poor stability, and poor fluidity of CA mortar, and achieves a simple and convenient preparation method , good storage stability and low cost of raw materials

Active Publication Date: 2014-11-26
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent ZL02139237.4 discloses a ballastless track CA mortar, but its actual application effect is not satisfactory when the trial paving of the Qinshen Passenger Dedicated Line Dog River Bridge and Shuanghe Bridge is carried out
The emulsified asphalt used for CA mortar in the prior art has the disadvantages of poor stability and difficult long-term transportation and storage. The prepared CA mortar has defects such as poor fluidity and short working time. Therefore, emulsified asphalt for CA mortar still needs to be developed. Improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Fully dissolve the emulsification stabilizer calcium chloride 0.25% and cationic polyacrylamide 0.05% in water at 90°C, cool to 40°C, and then mix it with the composite bitumen emulsifier octadecyltrimethylammonium chloride 1.5% and wood Add 0.5% Suamine to 15-40°C water to make soap, adjust the pH of the soap to 4 with hydrochloric acid; rinse the colloid mill with excess soap, set the temperature of the colloid mill to 45°C, and the pressure to 0.2MPa Add 55% of Shengli No. 70 bitumen at a temperature of 140°C and 45% of soap liquid at a temperature of 55°C into a colloid mill for full emulsification and dispersion to obtain emulsified asphalt.

Embodiment 2

[0020] Fully dissolve the emulsification stabilizer ammonium chloride 0.3% and polyethylene glycol 0.1% in water at 90°C, cool to 40°C, then mix it with the compound bitumen emulsifier octadecyltrimethylammonium chloride 1.0%, tallow Add 0.5% of amidopolyamine and 1.0% of stearic acid amidopolyamine to water at 15-40°C to make soap, adjust the pH of the soap to 4 with hydrochloric acid; rinse the colloid mill with excess soap, and lower the temperature of the colloid mill Set at 50°C and pressure at 0.1MPa, add 60% of Maoming No. 90 bitumen at a temperature of 145°C and 40% of soap liquid at a temperature of 55°C into a colloid mill for full emulsification and dispersion to obtain emulsified asphalt.

Embodiment 3

[0022] Fully dissolve the emulsification stabilizer ferric chloride 0.4% and hydroxypropyl cellulose 0.1% in water at 90°C, cool to 40°C, and then mix it with the compound asphalt emulsifier alkyl dimethyl hydroxyethyl ammonium chloride 3.5% Add 1.0% of alkyl bisquaternary ammonium salt to 15-40°C water to make soap, rinse the colloid mill with excess soap, set the temperature of the colloid mill at 55°C, the pressure at 0.2MPa, and the temperature at 150 Add 65% of Jinan No. 100 bitumen at ℃ and 35% of soap solution at 45 ℃ to the colloid mill and fully emulsify and disperse to obtain emulsified asphalt.

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Abstract

The invention relates to an emulsified bitumen technology used for a plate-type ballastless track CA mortar, which comprises the following raw materials by mass percentage: 50-70% of matrix asphalt, 2-7% of composite asphalt emulsifier, 0.1-1.0% of composite emulsified stabilizing agent and the balance of water. The preparation method comprises the following steps: adding a composite emulsified stabilizing agent in water at temperature of 90 DEG C for fully dissolving and then cooling to temperature of 40 DEG C, adding a composite asphalt emulsifier in water at temperature of 15-40 DEG C for fully dissolving, mixing and heating to the temperature of 45-60 DEG C to obtain a soap liquid; setting the colloid grinder temperature at 45-60 DEG C and setting the pressure at 0.1-0.3 Mpa, adding the matrix asphalt at the temperature of 135-155 DEG C and the soap liquid at the temperature of 45-60 DEG C in colloid grinder for fully emulsifying and dispersing to obtain the product. The emulsified bitumen has good storage stability and is convenient for transporting and storing, and has good fluidity by using for the plate-type ballastless track CA mortar, the construction time is proper, and the separation and layering processes are not carried out on mortar during the stirring process.

Description

technical field [0001] The invention relates to emulsified asphalt used for intercity light rail or high-speed railway slab-type ballastless track CA mortar and a preparation method thereof, belonging to the technical field of high-speed railway slab-type ballastless track. Background technique [0002] At present, high-speed railway is the main trend of railway development in my country, and the slab ballastless track structure has become the main structural form of high-speed railway due to its high stability and smoothness of the track. The main technical elastic layer of the slab ballastless track is Cement Asphalt mortar, referred to as CA mortar, which acts as a stable buffer during train operation. CA mortar is made by mixing emulsified asphalt, cement sand dry material, additives, etc. It utilizes the principle of accelerating emulsified asphalt demulsification after cement absorbs water, and forms a three-dimensional network structure from cement hydrate and asphalt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L97/00C08L33/24C08L71/00C08L1/26C08K5/20C08K5/19C08K5/17C08K3/16C08J3/03C04B26/26
Inventor 高淑美马鹏程许金山达建文徐兴忠王建华毛冬梅
Owner CHINA PETROLEUM & CHEM CORP