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Cold mix asphalt and its preparation method, as well as the mixture containing the asphalt and its application

A technology for asphalt mixture and cold mix asphalt, which is used in building thermal insulation materials, building components, buildings, etc., can solve the problems of short service life, tire wear, and high driving noise, and achieves improved demulsification speed and bonding strength. degree, good emulsification effect

Active Publication Date: 2016-06-15
BEIJING TONGHUA ROAD MAINTENANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing cold-mix and cold-pavement ultra-thin wear layer technology has the problems of short service life, high driving noise, and serious tire wear; Asphalt and the mixed aggregate used in conjunction with it can improve the porosity and surface structure depth, improve driving safety, reduce its noise, and reduce the wear and tear on the tire while increasing the service life.

Method used

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  • Cold mix asphalt and its preparation method, as well as the mixture containing the asphalt and its application
  • Cold mix asphalt and its preparation method, as well as the mixture containing the asphalt and its application
  • Cold mix asphalt and its preparation method, as well as the mixture containing the asphalt and its application

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Experimental program
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Effect test

Embodiment 2

[0077] The raw materials used in the emulsified asphalt provided by this implementation are as follows: 90# heavy traffic asphalt (61 parts), furfural extraction oil (1.5 parts), SBS 4301 (3.2 parts), elemental sulfur (0.04 parts), modified paraffin ( 1.0 parts); for the production of asphalt raw materials for emulsification; cationic surfactant is tall oil imidazoline (1.0 parts), stabilizer is 1,3-β-glucan (0.04 parts); active anti-stripping agent Octadecylaminoethylpiperazine (0.2 parts) and 38 parts of water are used to prepare soap.

[0078] 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. Pass the mixture through a colloid mill at 4000RPM 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 to react for 3 hour...

Embodiment 3

[0105] The raw materials used in the emulsified asphalt provided by this implementation are as follows: 90# heavy traffic asphalt (64 parts), furfural extraction oil (2.4 parts), SBS 4303 (3.8 parts), elemental sulfur (0.1 part); lignin imidazoline (1.2 parts), the active anti-stripping agent is histamine phosphate (0.3 parts), the stabilizer is hydroxyethyl cellulose ether (number average molecular weight: 250000) (0.06 parts), and 35 parts of water are used to prepare soap.

[0106] Heat the heavy traffic asphalt to 180 degrees Celsius, and add the required compatible additive furfural to extract oil and polymer 4303SBS at one time by weight percentage. Pass the mixture through a colloid mill at 4000RPM 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 to react for 4 hours. Thereby, the required raw material asphalt is obtained, and t...

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Abstract

The invention relates to asphalt for an extremely thin surface wearing layer. The asphalt comprises 90-96 parts by weight of heavy-duty or conventionally modified asphalt, and a mixed preparation is added. The mixed preparation comprises the following components in parts by weight: 2-3 parts of polymer, 1-3 parts of rubber and 1.5-3 parts of dispersing auxiliary. The viscosity and stiffness of asphalt and the anchoring strength of asphalt and stones are improved, and decrease of the texture depth, the drainage performance and noise reduction effects caused by flotation of asphalt and gap block of the mixture under the effect of temperature and traffic load is avoided. The invention further discloses the mixture containing the asphalt. Grading control points are increased in the mixture, and broken grade and opened grade are matched to obtain a stable framework embedding structure and the maximum framework gap so as to obtain greater voidage and maximum communication voidage, so that surface function attenuation caused by instability of the framework is avoided, and meanwhile, the invention discloses a use method of the mixture.

Description

technical field [0001] The invention belongs to the field of road pavement materials, and in particular relates to a modified cold-mixed asphalt, a mixture containing the asphalt and a preparation method thereof. Background technique [0002] By the end of 2011, the total mileage of highways was 4.5 million kilometers, and the highway mileage was 85,000 kilometers. The highway mileage is the second in the world, second only to the United States. By 2015, it will surpass the United States to become the country with the largest highway mileage in the world. From the government level, such a huge asset needs to maintain and increase its value. From the social level, it is necessary to ensure the smooth flow, safety and comfort of these roads. Therefore, preventive maintenance will be the best means and the greatest demand. It can be seen from this that the government has put the specific goals of road maintenance sites into the government work report, and jointly determined fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L1/26C08K5/00C08K5/17C08K5/20C08K5/3445C08K5/47C08K5/3437C08K5/3415
Inventor 李淑明刘国江石红星袁志平李晓波杜延昭焦朋朋董月振
Owner BEIJING TONGHUA ROAD MAINTENANCE
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