Asphalt pavement maintenance agent and its preparation method and application

A technology of asphalt pavement and curing agent, which is applied in the direction of building components, buildings, building structures, etc., can solve the problems of pavement damage, short service life of asphalt pavement, water seepage, etc., and achieve simple and convenient construction technology, strong environmental adaptability, and improved The effect of service life

Active Publication Date: 2021-02-26
SHENZHEN YUETONG CONSTR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During use, under the action of various natural factors (such as oxygen, temperature, ultraviolet rays, water, etc.) Ruts, potholes, looseness, cracks, etc., if effective maintenance measures are not taken to eliminate diseases in time, the road surface will be seriously damaged
[0003] At present, the maintenance and repair method of asphalt pavement is mainly passive maintenance, that is, when the damage of the pavement seriously affects driving, the overlay or new pavement is carried out. Although this method can obtain the performance of the new pavement, it also has some defects. : Pavement renovation has a great impact on traffic, especially for some busy urban arterial roads and expressways with large traffic volume; at the same time, the cost of road surface renovation is relatively high, and the waste asphalt mixture will pollute the environment
[0005] Although the existing asphalt pavement maintenance agent can fill the tiny cracks in the asphalt pavement, water seepage will still occur after filling. With the water seepage in the asphalt pavement, the cracks will gradually become larger, and the service life of the asphalt pavement is short

Method used

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  • Asphalt pavement maintenance agent and its preparation method and application
  • Asphalt pavement maintenance agent and its preparation method and application
  • Asphalt pavement maintenance agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Example 1: A pavement maintenance agent in asphalt, including component A and component B, which are independent of each other. The component A includes the following components by weight: 7 parts of petroleum asphalt, 10 parts of cashew nut shell liquid modified amine, 1 1 part rare earth, 1 part asphalt regenerant, 1 part anti-aging agent, 10 parts PTFE emulsion, 1 part carbon black, 10 parts calcined kaolin;

[0036]Among them, the solid content of the polytetrafluoroethylene emulsion is 65%, the particle size of the emulsion is 2000nm, and the relative density is 1.55. The cashew nut shell liquid modified amine is a natural long-chain substituted phenalkamine prepared by the reaction of cashew nut oil, formaldehyde, and polyamines. Hardener;

[0037]Among them, the asphalt regenerant is synthetic rubber extender oil and activated rubber powder with a mass ratio of 1:1;

[0038]B includes the following components by weight: 1 part of styrene, 10 parts of ammonium persulfate aqueous ...

Embodiment 2-5

[0043]Example 2-5: An asphalt pavement maintenance agent. The difference from Example 1 is that the parts by weight of the components in the first and second components are different, and the parts by weight of the components in the first and second components are different The numbers are shown in Table 1.

[0044]

[0045]

[0046]Among them, the refined asphalt in Example 2 is coal tar pitch, the functional auxiliary agent is black placer, and the dispersant is methylpentanol; the refined asphalt in Example 3 is SBS thermoplastic styrene butadiene rubber modified asphalt, and the functional auxiliary agent is montmorillonite. , The dispersant is a cellulose derivative; the refined asphalt in Example 4 is a rubber powder modified asphalt, the functional auxiliary is calcium carbonate, and the dispersant is sodium lauryl sulfate; the functional auxiliary in Example 5 is carbon black.

Embodiment 6

[0047]Example 6: An asphalt pavement maintenance agent. The difference from Example 1 is that the regenerated asphalt agent is a synthetic rubber filler oil and activated rubber powder with a mass ratio of 1.5:1.5.

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Abstract

The invention discloses an asphalt pavement maintenance agent, which relates to the technical field of pavement maintenance. The key point of the technical solution is to include component A and component B which are independent of each other. Component A includes the following components in parts by weight: 7-20 parts refined Asphalt, 10-40 parts of curing agent, 1-5 parts of heat stabilizer A, 1-10 parts of asphalt regeneration agent, 1-5 parts of anti-aging agent, 10-30 parts of polytetrafluoroethylene emulsion, 1-5 parts of carbon black The solid content of the polytetrafluoroethylene emulsion is 65-70%, the emulsion particle size is 200-450nm, and the relative density is 1.55; the second component includes the following components by weight: 1-20 parts of styrene, 10-20 parts of ammonium persulfate aqueous solution, 1-5 parts of Tween-80, 20-50 parts of deionized water, 1-5 parts of penetrant, 1-5 parts of thermal stabilizer B, 1-5 parts of dispersant. The invention solves the problem of poor impermeability of the asphalt pavement maintenance agent; the hydrophobic film is used to adhere to the surface of the asphalt pavement, which can improve the impermeability of the asphalt pavement and prolong the service life of the asphalt pavement.

Description

Technical field[0001]The invention relates to the technical field of pavement maintenance, and more specifically, it relates to an asphalt pavement maintenance agent and a preparation method and application thereof.Background technique[0002]About 80% of the high-grade highways that have been opened to traffic in my country are asphalt pavements. Asphalt pavements have a leading position due to the advantages of smooth surface, comfortable driving, low noise, good shock absorption, and recyclability of old asphalt mixtures. . In the course of use, the performance of the pavement will gradually decrease under the action of various natural factors (such as oxygen, temperature, ultraviolet light, water, etc.) and human factors (such as construction, heavy load, etc.), which is manifested as the appearance of asphalt pavement. Rutting, potholes, looseness, cracking, etc., if effective maintenance measures are not taken to eliminate the disease in time, it will cause serious damage to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08L95/00C08L25/06C08L71/02C08L33/26C08L1/08C08K13/06C08K3/08C08K3/04C08K3/34C08K5/05C08K5/41
CPCC08K2003/265C08L27/18C08L2205/035C08L95/00C08L25/06C08L71/02C08L33/26C08K13/06C08K3/08C08K3/04C08K3/346C08K5/05C08L9/06C08L1/08C08L21/00C08K5/41C08K3/26
Inventor 胡正东吴少辉陆中贵杨仕韬陈水清
Owner SHENZHEN YUETONG CONSTR ENG CO LTD
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