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High modulus cold-mixed asphalt as well as preparation method and mixture thereof

A cold-mix asphalt, high-modulus technology, applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of low modulus, inability to use the lower layer of high-grade highways, and poor water resistance.

Active Publication Date: 2014-01-22
BEIJING TONGHUA ROAD MAINTENANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is that the existing emulsified asphalt cold mix and cold recycled mix have low modulus and poor water resistance, and cannot be applied to the lower layer of high-grade roads

Method used

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  • High modulus cold-mixed asphalt as well as preparation method and mixture thereof
  • High modulus cold-mixed asphalt as well as preparation method and mixture thereof
  • High modulus cold-mixed asphalt as well as preparation method and mixture thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The raw materials used in emulsified asphalt are as follows: 70# heavy traffic asphalt (58 parts), furfural extraction oil (2 parts), SBS 1301 (2 parts), elemental sulfur (0.05 parts); cationic surfactant is 1-hydroxy Ethyl-2-heptadecenyl imidazoline betaine (1.0 parts), cetyltrimethylammonium chloride (0.5 parts); nonionic surfactant is octylphenol ethoxylate (1.0 parts) The stabilizer is xanthan gum and calcium chloride (0.05 parts); the interface repair agent is tall oil fatty acid (1.2 parts); the active anti-stripping agent is octadecylaminoethylpiperazine (0.25 parts).

[0063] Heat the heavy traffic asphalt to 180 degrees Celsius, and add the required compatible additive furfural extract oil and polymer 1301SBS at one time according to the weight percentage. The mixture is passed through a colloid mill at 3300RPM to speed up production. The milled mixture was continued to fully swell the SBS modified substance for 4 hours under the condition of stirring. Add th...

Embodiment 2

[0085] The raw materials used in emulsified asphalt are as follows: 90# heavy traffic asphalt (60 parts), furfural oil (1.5 parts), SBS 4301 (1.5 parts), elemental sulfur (0.04 parts); cationic surfactant is tall oil Imidazoline (0.8 parts), octadecyltrimethylammonium chloride (0.5 parts); non-ionic surfactant is nonylphenol polyoxyethylene ether (PEO-50) (0.8 parts); stabilizer is 1, 3-β-glucan (0.02 parts); the interface repair agent is linoleic acid (0.7 parts); the active anti-stripping agent is 5-hydroxyethyl-N-hexadecyl imidazoline (0.3 parts).

[0086] Heat the heavy traffic asphalt to 175 degrees Celsius, and add the required compatible additive furfural to extract oil and polymer 43011SBS at one time by weight percentage. The mixture is passed through a colloid mill at 2800RPM to speed up production. The milled mixture was continued to fully swell the SBS modified substance for 4 hours under the condition of stirring. Add the required elemental sulfur and continue t...

Embodiment 3

[0106] The raw materials used in the emulsified asphalt provided in this implementation are as follows: 90# heavy traffic asphalt (59 parts), furfural extraction oil (2.5 parts), SBS 4303 (3.0 parts), elemental sulfur (0.08 parts); cationic surfactant 1-hydroxyethyl-2-palmitic acid imidazoline betaine (0.5 parts), lignin imidazoline (0.5 parts); the stabilizer is hydroxyethyl cellulose ether (number average molecular weight: 250000) (0.06 parts); The interface repair agent is naphthenic acid (0.3 parts); the active anti-stripping agent is histamine phosphate (0.2 parts).

[0107] Heat the heavy traffic asphalt to 185 degrees Celsius, and add the required compatible additive furfural extract oil and polymer 1301SBS at one time by weight percentage. The mixture is passed through a colloid mill at 3800RPM to speed up production. The milled mixture was continued to fully swell the SBS modified substance for 4 hours under the condition of stirring. Add the required elemental sulf...

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Abstract

The invention relates to high modulus cold-mixed asphalt as well as a preparation method and a mixture thereof. The asphalt composition comprises the following components in parts by weight: 58-60 parts of petroleum asphalt, 1.5-3.0 parts of a polymer, 1.5-2.5 parts of a compatilizer, 1.0-2.5 parts of an emulgator and 0.3-1.2 parts of an interface repairing agent. The emulgator is in a twin structure with a polar group and a nonpolar group. According to the technology provided by the invention, the modulus of the emulsified asphalt cold-mixed mixture and the cold-recycling mixture is improved, and the mixture can be used as a material of a base layer, a lower surface layer and a middle surface layer of a newly constructed road and a reorganized and expanded road or used for structural repair of high-grade highways, thereby finding a convenient, energy-saving and environment-friendly solution capable adopting 100% reclaimed materials for structural repair of high-grade highways. With the adoption of the scheme of quick setting, the construction time is shortened and the cost is saved.

Description

technical field [0001] The invention belongs to the field of road pavement materials, and in particular relates to a modified high-modulus cold-mixed asphalt, a mixture containing the asphalt and a preparation method thereof. Background technique [0002] The total mileage of my country's road network has reached 4.5 million kilometers, and most roads will gradually enter the period of overhaul and intermediate repair, which will generate a large amount of waste and old mixtures. Calculated according to the maintenance and reconstruction rate of 5%, more than 200 million tons of waste asphalt mixture will be produced every year, and its economic value can reach more than 2 billion yuan according to rough estimates. Only 10% to 20%. [0003] From my country's "Twelfth Five-Year Plan", a detailed planning outline has been made for road maintenance: [0004] ——In 2010, the total maintenance investment was 522.7 billion, in 2015 it was 773.8 billion, and in 2020 it was 1,105.3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C04B26/26
Inventor 刘炤宇李江海石红星李晓波袁志平杜延昭董月振焦朋朋
Owner BEIJING TONGHUA ROAD MAINTENANCE
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