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Rubber-asphalt concrete and preparation method thereof

A rubber asphalt and concrete technology, applied in the field of building materials, can solve the problems of poor high temperature stability, easy cracking, poor fatigue resistance stability, etc., and achieve high skid resistance, enhanced pavement elasticity, high temperature stability and good water stability. Effect

Inactive Publication Date: 2018-06-12
罗永山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In practice, it is found that rubber asphalt concrete still has many shortcomings, such as poor fatigue resistance, poor high temperature stability, and easy cracking, etc.

Method used

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  • Rubber-asphalt concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of regenerated waste rubber: Place 100 parts of waste rubber powder in a multi-mode resonant cavity microwave field, and process the waste rubber. Place the waste rubber powder in the grinder, add 12 parts of triphenylphosphine and 13 parts of di-n-butyl sodium phosphite for grinding, set the speed of the grinder to 360r / min, and the grinding time to 28min, and it will be regenerated after grinding waste rubber powder;

[0031] Graft modification of regenerated waste rubber powder: Add regenerated waste rubber powder into the reaction kettle, add 80 parts of tetrahydrofuran, and then raise the temperature to 74°C to fully dissolve the regenerated waste rubber powder in tetrahydrofuran, and then add polyethylene glycol function 58 parts of ionic liquid, 65 parts of hyperbranched polyamide, 21 parts of initiator, fully stirred and reacted for 24 hours, poured out the product after the reaction, added acetone for precipitation and separation, then washed the prec...

Embodiment 2

[0035] Preparation of regenerated waste rubber: 120 parts of waste rubber powder were placed in a multi-mode resonant cavity microwave field, and the waste rubber was processed. Place the waste rubber powder in the grinder, add 10 parts of triphenylphosphine and 12 parts of di-n-butyl sodium phosphite for grinding, set the speed of the grinder to 370r / min, and the grinding time to 20min, and it will be regenerated after grinding waste rubber powder;

[0036] Graft modification of regenerated waste rubber powder: Add regenerated waste rubber powder into the reaction kettle, add 60 parts of tetrahydrofuran, and then raise the temperature to 70°C to fully dissolve the regenerated waste rubber powder in tetrahydrofuran, and then add polyethylene glycol function 50 parts of ionic liquid, 60 parts of hyperbranched polyamide, 20 parts of initiator, fully stirred and reacted for 22 hours, poured out the product after the reaction, added acetone for precipitation and separation, then w...

Embodiment 3

[0040] Preparation of regenerated waste rubber: 105 parts of waste rubber powder were placed in a multi-mode resonant cavity microwave field, and the waste rubber was processed. Place the waste rubber powder in the grinder, add 13 parts of triphenylphosphine and 15 parts of di-n-butyl sodium phosphite for grinding, set the speed of the grinder to 400r / min, and the grinding time to 25min. After grinding, it will be regenerated waste rubber powder;

[0041] Graft modification of regenerated waste rubber powder: Add regenerated waste rubber powder into the reaction kettle, add 75 parts of tetrahydrofuran, and then raise the temperature to 71°C to fully dissolve the regenerated waste rubber powder in tetrahydrofuran, and then add polyethylene glycol function 52 parts of ionic liquid, 70 parts of hyperbranched polyamide, 25 parts of initiator, fully stirred and reacted for 20 hours, poured out the product after the reaction, added acetone for precipitation and separation, then wash...

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Abstract

The invention belongs to the field of building materials and particularly relates to rubber-asphalt concrete and a preparation method thereof. The rubber-asphalt concrete comprises, by weight, 50-60 parts of mineral powder fly ash, 20-30 parts of stone chips, 6-8 parts of limestone, 10-15 parts of cement, 5-10 parts of supermolecule rubber composite material, 6-10 parts of asphalt, 2-4 parts of glass fibers, 2-3 parts of sucrose diacetate hexaisobutyrate and 80-120 parts of water. The preparation method includes: using a method combining microwave and mechanical gridnign to regenerate waste rubber powder, performing grafting modification on the regenerated rubber powder, subjecting the limestone to high-temperature calcining, adding the supermolecule rubber composite material and the restof raw materials into the limestone, adding water, and evenly mixing to obtain the rubber-asphalt concrete. The rubber-asphalt concrete is good in performance such as high-temperature stability, low-temperature toughness, aging resistance, fatigue resistance and water damage resistance and capable of satisfying use requirements.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a rubber asphalt concrete and a preparation method thereof. Background technique [0002] With the development of my country's economic life and the extensive use of vehicles, the number of scrapped automobile rubber tires is increasing day by day, and a large number of waste rubber tires are piled up, which not only causes waste of resources, but also is difficult to degrade, which will damage the environment and affect the growth of vegetation. Rain can easily breed mosquitoes, spread diseases, and endanger the ecological environment. Using rubber powder in asphalt concrete can recycle waste rubber to protect the environment. [0003] Rubber asphalt concrete is mainly a road construction material with excellent performance, which is mainly made of waste rubber products crushed into particles and then combined with asphalt, coarse and fine aggregates, etc. Rubber asphalt concr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/0075C04B18/08C04B18/141C04B14/02C04B14/28C04B18/22C04B24/045C04B24/34C04B24/16C04B24/122C04B24/125C04B2103/10C04B2103/60C04B14/10C04B14/42C04B24/06C04B24/36
Inventor 罗永山
Owner 罗永山
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