A kind of anti-ultraviolet aging micro-surfacing mixture and preparation method thereof

A micro-surface compound, UV-resistant technology, applied in the field of road pavement, can solve the problems of affecting pavement durability, pavement temperature shrinkage cracking, etc., and achieve the effects of reducing low-temperature cracking, preventing catalytic degradation, and enhancing UV blocking ability.

Active Publication Date: 2018-10-23
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultraviolet aging can easily cause temperature shrinkage and cracking of the pavement, coupled with loads and other environmental factors, seriously affecting the durability of the pavement. Therefore, new technical means are needed to improve and enhance the performance of the existing micro-surfacing mixture. performance, making it meet higher pavement maintenance requirements

Method used

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  • A kind of anti-ultraviolet aging micro-surfacing mixture and preparation method thereof
  • A kind of anti-ultraviolet aging micro-surfacing mixture and preparation method thereof
  • A kind of anti-ultraviolet aging micro-surfacing mixture and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The anti-ultraviolet aging micro-surface mixture of this embodiment is made of the following raw materials in mass percentage: aggregate 77.0%, SBR modified emulsified asphalt 9%, mineral powder 4%, water 8%, cement 1.2%, nanometer dioxide 0.1% of cerium, 0.4% of carbon black, 0.3% of hydrotalcite; the nominal maximum particle size of the aggregate is not more than 9.5mm, and the particle size of the mineral powder is less than 0.075mm. The gradation type is MS-3 type, and the specific gradation composition is shown in Table 1;

[0027] Table 1 MS-3 type gradation design

[0028]

[0029]

[0030] In the present embodiment, the mass purity of nano cerium dioxide is 99.8%, and the average particle diameter is 20nm, and carbon black is N220 type carbon black; 6 Al 2 (CO 3 )(OH) 16 4H 2 O. SBR modified emulsified asphalt is preferably formed by uniformly mixing base asphalt, SBR latex modifier, cationic asphalt emulsifier and water in a mass ratio of 60:5:3:32;...

Embodiment 2

[0036]The anti-ultraviolet aging micro-surface mixture of this embodiment is made of the following raw materials in mass percentage: 75.3% of aggregate, 8% of SBR modified emulsified asphalt, 5% of mineral powder, 9% of water, 1.8% of cement, and nanometer dioxide 0.2% of cerium, 0.6% of carbon black, 0.1% of hydrotalcite; the nominal maximum particle size of the aggregate is not more than 9.5mm, and the particle size of the mineral powder is less than 0.075mm. The gradation type is MS-3 type, and the specific gradation composition is shown in Table 1;

[0037] In the present embodiment, the mass purity of nano cerium dioxide is 99.8%, and the average particle diameter is 20nm, and carbon black is N220 type carbon black; 6 Al 2 (CO 3 )(OH) 16 4H 2 O. SBR modified emulsified asphalt is preferably formed by uniformly mixing base asphalt, SBR latex modifier, cationic asphalt emulsifier and water in a mass ratio of 60:5:3:32; For SK-70# asphalt, the emulsifier is MQK-1D slow...

Embodiment 3

[0043] The anti-ultraviolet aging micro-surface mixture of this embodiment is made of the following raw materials in mass percentage: 76.6% of aggregate, 8% of SBR modified emulsified asphalt, 5% of mineral powder, 8% of water, 1.4% of cement, and nanometer dioxide 0.3% of cerium, 0.2% of carbon black, 0.5% of hydrotalcite; the nominal maximum particle size of the aggregate is not more than 9.5mm, and the particle size of the mineral powder is less than 0.075mm. The gradation type is MS-3 type, and the specific gradation composition is shown in Table 1;

[0044] In the present embodiment, the mass purity of nano cerium dioxide is 99.8%, and the average particle diameter is 20nm, and carbon black is N220 type carbon black; 6 Al 2 (CO 3 )(OH) 16 4H 2 O. SBR modified emulsified asphalt is preferably formed by uniformly mixing base asphalt, SBR latex modifier, cationic asphalt emulsifier and water in a mass ratio of 60:5:3:32; For SK-70# asphalt, the emulsifier is MQK-1D slo...

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Abstract

The invention provides a micro-surfacing mixture resistant to ultraviolet aging, which is made of the following raw materials in mass percentage: 75.3% to 77.3% of aggregate, 8% to 9% of SBR modified emulsified asphalt, and 4% to 5% of mineral powder %, 8% to 9% of water, 1.2% to 1.8% of cement, 0.1% to 0.3% of nano cerium dioxide, 0.1% to 0.6% of carbon black, and 0.1% to 0.5% of hydrotalcite. The present invention also provides a method for preparing the above-mentioned ultraviolet aging-resistant micro-surface compound. The micro-surface compound provided by the present invention, after the ultraviolet aging test, its anti-wear performance, cohesive force, durability and water damage resistance are significantly enhanced, and can play the role of resisting ultraviolet radiation, and can be applied to ultraviolet radiation In areas with higher strength, it can effectively alleviate the damage of asphalt pavement due to ultraviolet aging, and the preparation process provided by the invention is simple and has wide practical application value.

Description

technical field [0001] The invention belongs to the technical field of road pavement, and in particular relates to an ultraviolet aging-resistant micro-surface compound and a preparation method thereof. Background technique [0002] With the development of the economy, the task of logistics and transportation is becoming more and more heavy. Traffic load, temperature, moisture, etc. have brought major challenges to the operation of expressways, other grades of roads and urban logistics traffic arteries. The road strength is good, but there are also surface functional diseases in different degrees. For the maintenance and repair of this part of the road, the main purpose is to restore its surface function. The micro-surface maintenance plan is an ideal choice, and in the preventive maintenance Or in new roads, micro-surfacing can also function as a surface wear layer. [0003] Micro-surfacing is to use special equipment to mix polymer modified emulsified asphalt, aggregates,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B14/30C04B22/06C04B14/02C04B111/20C04B111/72
CPCC04B14/022C04B14/30C04B22/06C04B28/00C04B2111/00008C04B2111/20C04B2111/72C04B2201/10C04B14/02C04B24/36
Inventor 郝培文常睿刘红瑛徐金枝张铭铭王春凌桂林
Owner CHANGAN UNIV
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