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Asphalt aging repairing agent and preparation and use methods thereof

A repairing agent and asphalt technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of large construction investment, poor economic and social benefits, time-consuming and labor-intensive in regeneration treatment technology, and achieve resistance to ultraviolet light aging, The effect of improving penetration and diffusion ability and strong wear resistance

Inactive Publication Date: 2020-03-13
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of regenerative treatment technology requires large construction investment, long period, time-consuming and laborious, and requires long-term traffic interruption, resulting in poor economic and social benefits.

Method used

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  • Asphalt aging repairing agent and preparation and use methods thereof
  • Asphalt aging repairing agent and preparation and use methods thereof
  • Asphalt aging repairing agent and preparation and use methods thereof

Examples

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preparation example Construction

[0025] The invention also provides a preparation method of the asphalt aging repair agent, which includes the following steps:

[0026] Step 1. Dissolve phthalate, polyoxyethylene ether compound and sulfolane in water to obtain a continuous phase mixed solution, and the continuous phase mixed solution is used as a material for standby;

[0027] Add rubber oil and polyvinyl alcohol to the emulsified asphalt, stir for 5-10min at room temperature, at a stirring rate of 200-400rad / min, to obtain a continuous phase emulsion, add hindered amine stabilizer and nano-titanium dioxide, and slowly stir until particles Dissolve, slowly stirring rate is 200 ~ 400rad / min, stirring time is 5-10min; then at a heating rate of 5-6 ℃, heating up to 60-70 ℃, continue to stir slowly until a stable solution is formed, slowly stirring time is 200 ~ 400rad / min, stirring time is 10-15min; cooling to room temperature, get material 2 for use;

[0028] Step 2. Put the above-mentioned material 1 and material 2 ...

Embodiment 1

[0033] An asphalt aging repair agent, in parts by mass, including rubber oil: 25 parts, emulsified asphalt: 21 parts, phthalate: 12 parts, polyoxyethylene ether compound: 4 parts, polyvinyl alcohol: 5 parts , Sulfolane: 10 parts, ultra-fine cement: 5 parts, light stabilizer 770: 3 parts, nano-titanium dioxide: 3 parts, water: 12 parts.

[0034] Among them, the emulsified asphalt uses ordinary emulsified asphalt, and the solid content of ordinary emulsified asphalt is 35%; the ultra-fine cement is P.O42.5 type ultra-fine cement with a specific surface area greater than 1000m 2 / kg, the average particle size is less than 8μm; the fineness of the light stabilizer 770 is 500nm, and the fineness of nano-titania is 40nm; tap water is used for water.

[0035] The preparation method of an asphalt aging repair agent described in Example 1, includes the following steps:

[0036] Step 1. Dissolve phthalate, polyoxyethylene ether compound and sulfolane in water to obtain a continuous phase mixed...

Embodiment 2

[0040] An asphalt aging repair agent, in parts by mass, including rubber oil: 30 parts, emulsified asphalt: 22, phthalate: 10 parts, polyoxyethylene ether compound: 3 parts, polyvinyl alcohol: 7 parts, Sulfolane: 8 parts, ultrafine cement: 7 parts, light stabilizer 770: 3 parts, nano titanium dioxide: 2 parts and water: 8 parts.

[0041] Among them, the emulsified asphalt uses ordinary emulsified asphalt, and the solid content of ordinary emulsified asphalt is 40%; the ultra-fine cement is P.O42.5 type ultra-fine cement with a specific surface area greater than 1000m 2 / kg, the average particle size is less than 8μm; hindered amine stabilizer uses light stabilizer 770, the fineness of light stabilizer 770 is 400nm; nanometer titanium dioxide fineness is 30nm; water uses tap water.

[0042] The preparation method of an asphalt aging repair agent described in Example 2 includes the following steps:

[0043] Step 1. Dissolve phthalate, polyoxyethylene ether compound and sulfolane in wat...

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Abstract

The invention discloses an asphalt aging repairing agent and a preparation and use method thereof. The preparation method comprises the following steps: dissolving a phthalate, a polyoxyethylene ethercompound and sulfolane in water to obtain a continuous-phase mixed solution which is taken as a first material; adding rubber oil and polyvinyl alcohol into emulsified asphalt, stirring to obtain a continuous-phase emulsion, adding a hindered amine stabilizer and nano titanium dioxide, and slowly stirring; raising the temperature, continuously and slowly stirring, and cooling to room temperatureto obtain a second material; introducing the first material and the second material into a reaction kettle for mixing, and slowly stirring; then adding superfine cement, slowly stirring after heating,and finally quickly stirring to obtain the asphalt aging repairing agent. A penetrant, a low-viscosity component and the like are doped into the asphalt aging repairing agent to generate synergisticeffect, so that the permeation and diffusion capacity of the asphalt aging repairing agent is improved, milling and on-site spraying are not needed, aged asphalt can be rapidly repaired under on-sitelow-temperature conditions, and the asphalt aging repairing agent is convenient to prepare, and rapid and easy to construct.

Description

Technical field [0001] The invention relates to the technical field of road maintenance, in particular to an asphalt aging repair agent and a preparation and use method thereof. Background technique [0002] Because petroleum asphalt has strong adhesion, temperature sensitivity and insulation characteristics, it is widely used in the highway field, especially some high-grade highways, but during the service process of asphalt pavement, it will inevitably be affected by external environmental factors. The adverse effects of heat, light, oxygen, vehicle load and their coupling effects make the light components in them be catalytically oxidized and converted into heavy components, which leads to the aging of the asphalt; Volatilization or being absorbed by aggregates will further aggravate the asphalt aging process, causing the asphalt to become brittle and hard, and reduce its deformability. In severe cases, it will cause microcracks on the asphalt pavement and further accelerate t...

Claims

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Application Information

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IPC IPC(8): C08L91/00C08L95/00C08L71/02C08L29/04C08K3/22C08K5/12C08K3/34
CPCC08L91/00C08L2205/035C08K2003/2241C08K2201/011C08L95/00C08L71/02C08L29/04C08K3/22C08K5/12C08K3/34
Inventor 田耀刚张梦缘赵成阎宝宝马荣辉王振军徐鸥明齐琳贾侃
Owner CHANGAN UNIV