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Preparation method of anti-stripping rubber asphalt mixture

A technology for rubberized asphalt and mixture, which is applied in the field of preparation of anti-stripping rubberized asphalt mixture, can solve the problems of poor adhesion between acid aggregate and asphalt, improve the ability to resist water damage, solve early damage, and change surface properties. Effect

Active Publication Date: 2019-09-24
HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of anti-stripping rubber asphalt mixture, which solves the disadvantage of poor adhesion between acidic aggregates and asphalt at present, greatly increases the use ratio of acidic aggregates in asphalt pavement, and improves the asphalt Fatigue resistance and durability of pavement

Method used

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  • Preparation method of anti-stripping rubber asphalt mixture
  • Preparation method of anti-stripping rubber asphalt mixture

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1 Preparation of 1# anti-peeling rubber asphalt mixture

[0021] In the first step, put 100 parts of base asphalt, 4 parts of softener tall oil, and 0.8 parts of activator (a compound of alkylphenol disulfide and xylene disulfide at a mass ratio of 1:2) into the modified Heat in the asphalt reaction tank, when the temperature rises to 120°C, stir at constant temperature for 5 minutes, add 20 parts of rubber powder and start to raise the temperature step by step: when the temperature rises to 150°C, 4.5 parts, 0.9 parts of activator (alkylphenol disulfide and Xylene disulfide compounded with a mass ratio of 1:2) were put into the modified asphalt reaction tank and heated together. When the temperature rose to 120°C, the temperature was stirred for 5 minutes, and 20 parts of rubber powder was added to start the temperature rise step by step: when When the temperature rises to 150°C, stir at a constant temperature for 10 minutes; when the temperature continues to r...

Embodiment 2

[0030] Example 2 Preparation of 2# anti-peeling rubber asphalt mixture

[0031] In the first step, put 100 parts of base asphalt, 5 parts of softener tall oil, and 1.2 parts of activator (a compound of alkylphenol disulfide and xylene disulfide at a mass ratio of 1:2) into the modified Heat in the asphalt reaction tank, when the temperature rises to 120°C, stir at a constant temperature for 5 minutes, add 25 parts of rubber powder and start to raise the temperature step by step: when the temperature rises to 150°C, stir at a constant temperature for 10 minutes; when the temperature continues to rise to 180°C, stir at a constant temperature for 10 minutes ;When the temperature rises to 200°C, stir and react at this temperature for 30 minutes; then lower the temperature to 180°C, and store the prepared rubber asphalt for later use;

[0032] In the second step, add 5 parts of deionized water and 2.5 parts of absolute ethanol into the beaker to prepare an ethanol solution, and the...

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Abstract

The invention discloses a preparation method of an anti-stripping rubber asphalt mixture. The preparation method comprises the steps: putting an asphalt matrix, a softening agent and an activator into a reaction tank, performing gradient heating, performing stirring so as to obtain rubber asphalt, preparing an ethanol solution by using deionized water and anhydrous ethanol, then adding a coupling agent and a silicone water repellent, performing even stirring at room temperature so as to prepare an organic surface modifier, mixing cement and hydrated lime powder thoroughly in a stirrer at a ratio so as to prepare an inorganic modifier, performing continuous stirring on graded aggregate in a forced stirrer, spraying the organic surface modifier to the surface of the graded aggregate, performing drying, blending the dried mixture with the inorganic modifier so as to obtain comprehensive modified aggregate, and performing preparation on the rubber asphalt and the comprehensive modified aggregate according to a basic ratio of the asphalt mixture so as to obtain the anti-stripping rubber asphalt mixture. A surface modification technology is adopted to change the surface properties of a mineral material in the asphalt mixture, the adhesion between the asphalt and the mineral material is improved, and the service life of a road surface is prolonged.

Description

technical field [0001] The invention relates to the field of road engineering materials, in particular to a preparation method of an anti-stripping rubber asphalt mixture. Background technique [0002] Asphalt roads have the characteristics of smooth surface, comfortable driving, and short construction period, and are widely used in road construction. However, many pavements often suffer serious damage during service, and early damage such as spalling, rutting, cracking, and potholes occurs. Especially among the various forms of early damage, water damage has a greater impact on pavement performance. Many studies have shown that the root cause of water damage to the pavement is that the adhesion of asphalt on the surface of the aggregate is weak. Potholes and other diseases. [0003] For asphalt pavement, the adhesion and anti-stripping performance of asphalt and aggregate is one of the most basic conditions to ensure the performance of the pavement. Therefore, when build...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B20/12C04B111/20
CPCC04B26/26C04B20/12C04B2111/20C04B2111/0075C04B14/048C04B14/28C04B24/34C04B24/08C04B24/16C04B20/1051C04B20/1077C04B20/1066
Inventor 王笑风杨博刘东旭刘建飞赵志刚徐琦万晨光
Owner HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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