Colored asphalt concrete with lasting color and production method thereof

A technology of colored asphalt and decolorized asphalt, applied in the field of concrete, can solve the problems of poor color persistence of colored asphalt concrete

Active Publication Date: 2022-05-06
HANGZHOU XIANGAO ROAD & BRIDGE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the problem of poor color durability of colored asphalt concrete remains unsolved

Method used

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  • Colored asphalt concrete with lasting color and production method thereof
  • Colored asphalt concrete with lasting color and production method thereof
  • Colored asphalt concrete with lasting color and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0037] A color stabilizer, which is prepared by the following method:

[0038] According to the dosage in Table 1, mix molasses and ammonium nitrate, stir evenly, add dipropylene polyurethane protective agent and maltodextrin and mix to obtain a color stabilizer.

preparation example 2-5

[0040] The preparation method and raw material types of the color stabilizer of Preparation Example 2-5 are exactly the same as those of Preparation Example 1, the difference is that the dosage of each raw material is different, as shown in Table 1 for details.

[0041]Each raw material dosage (unit: kg) of the color stabilizer of table 1 preparation example 1-5

[0042] raw material Preparation Example 1 Preparation example 2 Preparation example 3 Preparation Example 4 Preparation Example 5 Dipropylene polyurethane protective agent 5 10 15 10 10 Maltodextrin 2 2 2 2 2 molasses 9 9 9 8 10 ammonium nitrate 5 5 5 5 5

Embodiment 1

[0044] The colored asphalt concrete of embodiment 1 obtains by following operation steps:

[0045] According to the dosage in Table 2, add decolorized asphalt, inorganic pigments, lime powder, medical stone, ethylene-vinyl acetate copolymer, lignin fiber and sodium gluconate into water and mix, and stir evenly at 160°C to obtain a mixture Material A;

[0046] Add ordinary Portland cement and other raw materials into the mixture A, and stir evenly to obtain colored asphalt concrete.

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Abstract

The invention relates to the field of concrete, and particularly discloses colored asphalt concrete with lasting colors and a production method of the colored asphalt concrete with the lasting colors. The colored asphalt paint is prepared from the following raw materials in parts by weight: 40 to 60 parts of decolored asphalt, 5 to 10 parts of inorganic pigment, 6 to 10 parts of ordinary Portland cement, 30 to 40 parts of lime powder, 25 to 30 parts of medical stone, 1 to 5 parts of ethylene-vinyl acetate copolymer, 1 to 3 parts of lignin fiber, 3 to 5 parts of sodium gluconate and 10 to 15 parts of water. The stability of the colored asphalt concrete before ultraviolet aging and the stability of the colored asphalt concrete after ultraviolet aging for 36 hours are 84.7 kN and 83.0 kN at most, the stability of the colored asphalt concrete after being soaked in water for 48 hours is 12.89 kN at most, the color of the colored asphalt concrete obtained in the invention basically keeps the original color after being irradiated by ultraviolet rays for 2 weeks, no obvious change exists, and the color durability of the colored asphalt concrete is improved.

Description

technical field [0001] The application relates to the field of concrete, more specifically, it relates to a color-lasting colored asphalt concrete and a production method. Background technique [0002] Colored asphalt concrete, also known as colored asphalt concrete, is prepared by mixing raw materials such as decolorized asphalt, aggregates, pigments and additives at a specific temperature. It can be used for the pavement of bus lanes, landscape roads, sidewalks, park roads, community roads, airport runway slideways, etc. It can beautify the environment and divide traffic sections. [0003] Colored asphalt concrete is susceptible to ultraviolet rays, rain, loads and other factors in the environment, resulting in photo-oxidative aging, ozone aging and other fading phenomena, resulting in poor color persistence of colored asphalt concrete. [0004] In the related technology, lanthanum nitrate is added to the colored asphalt concrete to improve the color retention of the colo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/0075C04B2201/50C04B24/36C04B14/28C04B14/36C04B18/26C04B24/26C04B24/10C04B2103/54C04B24/282C04B24/38C04B22/085C04B22/16C04B14/307Y02W30/91
Inventor 周必功江沈平
Owner HANGZHOU XIANGAO ROAD & BRIDGE ENG
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