High-temperature-resistant modified asphalt pavement repairing material and preparation method thereof

A modified asphalt and pavement repair technology, which is applied to building insulation materials, building components, buildings, etc., can solve the problems of difficult application in high-temperature tropical regions, poor high-temperature resistance, and high cost

Inactive Publication Date: 2020-10-23
QUANZHOU INST OF INFORMATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the above-mentioned deficiencies, the purpose of the present invention is to provide a kind of high temperature resistant modified asphalt pavement repair material and its preparation method to the art, so that it can solve the problem of complicated preparation of existing similar asphalt pavement repair materials, high cost and high temperature resistance. Poor, more difficult to apply to the technical problems of perennial high temperature tropical areas

Method used

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  • High-temperature-resistant modified asphalt pavement repairing material and preparation method thereof
  • High-temperature-resistant modified asphalt pavement repairing material and preparation method thereof
  • High-temperature-resistant modified asphalt pavement repairing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A high temperature resistant modified asphalt pavement repair material, comprising the following mass parts: 85 parts of base asphalt, 19 parts of grafted SBS modifier, 3 parts of polyphosphoric acid (PPA), tackifier (methyl cellulose ) 6 parts, stabilizer (polyvinyl alcohol) 4 parts, anti-aging agent (UV-531) 5 parts. Among them, the grafted SBS modifier is prepared by mixing the YH-801 type SBS (ie, styrene and butadiene block copolymer) with the coupling agent in proportion, and the coupling reaction is obtained, wherein the coupling agent is For KH-560, the mixing ratio is SBS:KH-560=50:1, which is the case for the grafted SBS modifiers in the following examples.

[0041] The preparation method of the above-mentioned high temperature resistant modified asphalt pavement repairing material comprises the following steps: the preparation process includes melting, premixing, shearing and development; during the melting process, the solid base asphalt is burnt into a liqu...

Embodiment 2

[0043] A high temperature resistant modified asphalt pavement repair material, comprising the following mass parts: 81 parts of base asphalt, 19 parts of grafted SBS modifier, 2 parts of polyphosphoric acid (PPA), tackifier (methyl cellulose ) 8 parts, stabilizer (polyvinyl alcohol) 5 parts, anti-aging agent (UV-531) 6 parts.

[0044] The preparation method of the above-mentioned high-temperature-resistant modified asphalt pavement repair material includes the following steps: the same as the first embodiment, the modified asphalt pavement repair material must be prepared through 4 processes; the solid matrix asphalt is burnt by liquefied petroleum gas during the melting process It is in liquid state and should be stored properly for weighing. In order to make PPA better promote the compatibility of SBS and base asphalt, it is necessary to carry out the premixing stage. Weigh the liquid base asphalt, grafted SBS modifier and polyphosphoric acid according to the above mass frac...

Embodiment 3

[0046] A high temperature resistant modified asphalt pavement repair material, comprising the following substances in parts by mass: 79 parts of base asphalt, 16 parts of grafted SBS modifier, 2 parts of polyphosphoric acid, and 7 parts of tackifier (methyl cellulose) , 4 parts of stabilizer (polyvinyl alcohol), 4 parts of anti-aging agent (UV-531).

[0047] The preparation method of the above-mentioned high-temperature-resistant modified asphalt pavement repairing material comprises the following steps: taking the base asphalt that has been burnt into a liquid state according to the required parts and adding it to the modification system; adding the base asphalt, grafted SBS modifier, poly Preliminary mixing of polyphosphoric acid. Under mechanical stirring, the stirring rate is 800-1000r / min, the stirring time is 15min, and the temperature is 180°C to ensure that the compatibility between SBS and base asphalt is good; then methyl cellulose , polyvinyl alcohol, and UV-531 are...

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Abstract

The invention relates to a high-temperature-resistant modified asphalt pavement repairing material and a preparation method thereof. The material is prepared from the following substances in parts bymass: 76-96 parts of matrix asphalt, 15-20 parts of a grafted SBS modifier, 1-5 parts of polyphosphoric acid, 4-9 parts of a tackifier, 3-6 parts of a stabilizer and 4-6 parts of an anti-aging agent,wherein the grafted SBS modifier is prepared from SBS and a coupling agent through a coupling reaction. The preparation method comprises the following steps of: burning the solid matrix asphalt into aliquid state, weighing the liquid matrix asphalt, the grafted SBS modifier and the polyphosphoric acid according to the parts by mass, mixing liquid matrix asphalt, the grafted SBS modifier and the polyphosphoric acid in a modification system, and stirring at the speed of 800-1000r / min for 15 minutes at the temperature of 180 DEG C; then increasing the stirring speed of the modification system to1500-2000r / min, and adding the tackifier, the stabilizer and the anti-aging agent at the same time; finally, increasing the temperature of the modification system to 240 DEG C, and conducting stirring development for 2h to obtain the modified asphalt pavement repairing material which is resistant to high temperature and long in service life.

Description

technical field [0001] The invention relates to the field of asphalt materials, and relates to a high-temperature resistant modified asphalt pavement repair material and a preparation method thereof. Background technique [0002] Asphalt road is currently one of the important types of high-grade highways in my country and even in the world. It has been widely developed because of its smooth road surface, no joints, low vibration, low noise, high driving efficiency, and convenient maintenance. There are also disadvantages. Due to the lack of various properties of the asphalt road surface, under natural environmental conditions such as light and heat, it often causes damage to a certain extent, which affects the speed and quality of vehicles during people's travel, and even seriously affects to people's traffic safety. To minimize traffic problems, these damaged asphalt pavements must be repaired in a timely and efficient manner. In addition, road maintenance in these areas is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L1/28C08L29/04C08K3/32C08K5/132
CPCC08L95/00C08L2201/08C08K2003/329C08L2205/035C08L53/025C08L1/28C08L29/04C08K3/32C08K5/132
Inventor 刘平
Owner QUANZHOU INST OF INFORMATION ENG
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