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Novel asphalt pavement regeneration method

A technology of asphalt pavement and asphalt rejuvenation agent, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problem of volatilization of harmful components in asphalt fume, and achieve the goal of improving reusability, performance, and aggregate volume Effect

Active Publication Date: 2021-02-02
广东宏骏建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of volatilization of harmful components in asphalt fumes, this application provides a new asphalt pavement regeneration method

Method used

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  • Novel asphalt pavement regeneration method
  • Novel asphalt pavement regeneration method
  • Novel asphalt pavement regeneration method

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0056] Nano-TiO 2 / ACF material is prepared by the following steps:

[0057]Step A: Take 10 parts by weight of activated carbon fibers, condense and reflux with isopropanol for 25 minutes at a temperature of 82° C.; wherein the fiber diameter of the activated carbon fibers is 5 μm;

[0058] Step B: adding the activated carbon fiber after the condensing and reflux treatment in step A to 80 parts by weight of nitric acid solution, in an oil bath at a temperature of 120° C. for 4 hours, then filtering, and repeatedly washing the filtered activated carbon fiber with deionized water, Modified activated carbon fibers are obtained; wherein the massfraction of nitric acid solution is 60%;

[0059] Step C: Take 5 parts by weight of nano-titanium dioxide, add it to 100 parts by weight of isopropanol aqueous solution, and ultrasonically disperse it for 15 minutes at a frequency of 15000 Hz to obtain a dispersion; wherein the particle size of nano-titanium dioxide is 20 nm, and the isopr...

preparation example 2

[0062] The difference between Preparation Example 2 and Preparation Example 3 and the above-mentioned Preparation Example 1 lies in the amount of materials and process conditions, see Table 2 below for details:

[0063] Table 2 Condition parameter table of preparation examples 1-3

[0064]

preparation example 4

[0066] The difference between this preparation example and the above-mentioned preparation example 2 is: the activated carbon fiber is treated with microwave heating, and the specific steps are as follows:

[0067] Step A: Take 13 parts by weight of activated carbon fibers, condense and reflux with isopropanol for 23 minutes at a temperature of 83° C.; wherein the fiber diameter of the activated carbon fibers is 10 μm;

[0068] Step B: Put the activated carbon fiber after the condensing and reflux treatment in step A into 800W, 150V microwave radiation treatment for 3 minutes, take it out, and prepare the modified activated carbon fiber;

[0069] Step C: Take 8 parts by weight of nano-titanium dioxide, add it to 105 parts by weight of isopropanol aqueous solution, and ultrasonically disperse it for 13 minutes at a frequency of 16000 Hz to obtain a dispersion; wherein the particle size of nano-titanium dioxide is 30 nm, and the isopropanol aqueous solution The mass fraction is ...

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Abstract

The invention relates to the field of asphalt regeneration, and particularly discloses a novel asphalt pavement regeneration method. The method comprises the following steps: S1,milling and crushing an old asphalt pavement , and then recycling an old pavement asphalt material ; S2, heating the old pavement asphalt material, and adding aggregate and an asphalt regenerant to prepare a mixture A; S3,taking SBS modified asphalt, mixing the SBS modified asphalt with a nano TiO2 / ACF material and an additive to prepare a mixture B, heating the mixture B to 145-165 DEG C, adding the mixture A, and uniformly stirring to obtain a recycled asphalt material; and S4, paving and compacting the recycled asphalt material prepared in the step S3 to finish asphalt pavement recycling treatment. The regeneration method disclosed by the invention is simple to operate, and the asphalt pavement paved by utilizing the regenerated asphalt material has the properties of high-temperature resistance, low-temperature resistance, elasticity, skid resistance, fatigue resistance, aging resistance and the like, and can adsorb and decompose asphalt smoke generated in the production and paving processes of the asphalt material.

Description

technical field [0001] The application relates to the field of asphalt regeneration, more specifically, it relates to a novel asphalt pavement regeneration method. Background technique [0002] At present, due to the construction process of highway pavement, more than 90% of high-grade highways in my country are constructed with semi-rigid materials as the base and subbase of asphalt pavement, which has a strong ability to absorb loads and can withstand greater deformation and deflection , when the load is transferred from the semi-rigid material to the surface of the rigid material (cement concrete), the load intensity will attenuate, which is beneficial to control the reflective cracks and prolong the service life of the pavement. [0003] During the use of asphalt pavement, due to the long-term exposure to sunlight, air and water, as well as the physical and chemical interactions between asphalt and mineral materials, the asphalt molecules will be oxidized and polymerized,...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L91/00C08L83/14C08K13/06C08K9/02C08K7/06C08K3/22C08K5/12
CPCC08L95/00C08K2003/2241C08K2201/011C08K2201/003C08L2205/035C08L2207/22C08L53/02C08L91/00C08L83/14C08K13/06C08K9/02C08K7/06C08K3/22C08K5/12
Inventor 林翠洁黎雄武江岳荣
Owner 广东宏骏建筑工程有限公司
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