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Ultra-quiet pavement paving material and application

A paving material and ultra-quiet technology, which is applied in applications, on-site paved condensate pavement, construction, etc., can solve problems such as rutting, congestion, impact on driving safety, poor mechanical properties, etc., and achieve great practical value , Improve driving safety, good sound absorption and noise reduction effect

Inactive Publication Date: 2020-01-14
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, experiments have found that its mechanical properties are poor, especially under high temperature or extremely cold conditions, and its stability is low. It is prone to rutting, congestion and other diseases on roads with large traffic volumes, which affects driving safety.

Method used

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  • Ultra-quiet pavement paving material and application
  • Ultra-quiet pavement paving material and application
  • Ultra-quiet pavement paving material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] An ultra-quiet pavement paving material, which is formed by mixing aggregates, waste rubber, and a two-component solvent-free polyurethane binder under normal temperature conditions, and the mass percentage of the two-component solvent-free polyurethane binder is 5.5%, the mass percentage of waste rubber is 10%, and the balance is aggregate.

[0044] The two-component solvent-free polyurethane adhesive is synthesized by the reaction of epoxy resin and polyurethane adhesive prepolymer in a mass ratio of 1:4; the density of the polyurethane adhesive prepolymer is 1.2±0.05g / cm 3 , viscosity 100CPS, solid content 100%, solid peel strength ≥ 10MPa, solid shear strength > 50N / cm 2 .

[0045] It is further defined that the aggregates used are limestone aggregates, which are divided into coarse aggregates and fine aggregates; wherein the coarse aggregates have a particle content of <0.075mm by washing method ≤ 0.5%, a polishing value ≥ 42, and a needle flake content ≤ 10%. ...

Embodiment 2

[0049] An ultra-quiet pavement paving material, which is formed by mixing aggregates, waste rubber, and a two-component solvent-free polyurethane binder under normal temperature conditions, and the mass percentage of the two-component solvent-free polyurethane binder is 5%, the mass percentage of waste rubber is 12%, and the balance is aggregate.

[0050] The two-component solvent-free polyurethane adhesive is synthesized by the reaction of epoxy resin and polyurethane adhesive prepolymer in a mass ratio of 1:3; the density of the polyurethane adhesive prepolymer is 1.2±0.05g / cm 3 , viscosity 100CPS, solid content 100%, solid peel strength ≥ 10MPa, solid shear strength > 50N / cm 2 .

[0051] It is further defined that the aggregates used are limestone aggregates, which are divided into coarse aggregates and fine aggregates; wherein the coarse aggregates have a particle content of <0.075mm by washing method ≤ 0.5%, a polishing value ≥ 42, and a needle flake content ≤ 10%. ; ...

Embodiment 3

[0055] An ultra-quiet pavement paving material, which is formed by mixing aggregates, waste rubber, and a two-component solvent-free polyurethane binder under normal temperature conditions, and the mass percentage of the two-component solvent-free polyurethane binder is 6%, the mass percentage of waste rubber is 4%, and the balance is aggregate;

[0056] The two-component solvent-free polyurethane adhesive is synthesized by the reaction of epoxy resin and polyurethane adhesive prepolymer in a mass ratio of 1:6; the density of the polyurethane adhesive prepolymer is 1.2±0.05g / cm 3 , viscosity 100CPS, solid content 100%, solid peel strength ≥ 10MPa, solid shear strength > 50N / cm 2 .

[0057] It is further defined that the aggregates used are limestone aggregates, which are divided into coarse aggregates and fine aggregates; wherein the coarse aggregates have a particle content of <0.075mm by washing method ≤ 0.5%, a polishing value ≥ 40 and a needle flake content ≤ 5% ; Fine...

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Abstract

The invention relates to an ultra-quiet pavement paving material and application. The ultra-quiet pavement paving material comprises an aggregate, rubber and a two-component solvent-free polyurethanebinder, wherein the mass percentage of the two-component solvent-free polyurethane binder is 5.0-6.0%; the mass percentage of the rubber is 4-12%; the balance is the aggregate; and the two-component solvent-free polyurethane binder is synthesized by an epoxy resin and a polyurethane binder prepolymer according to a mass ratio of 1:(3-6). According to the pavement paving material which is providedby the invention, cubic rubber particles are adopted to be in contact with the aggregate to form connected pores, play good roles in sound absorption and noise reduction, and are easy to form stone-rubber-stone skeleton structures and can be in good contact with the aggregate, and thus the stability and the durability of the mixture can be ensured.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to an ultra-quiet road paving material and its application. Background technique [0002] Since the 21st century, the World Health Organization has conducted many large-scale surveys on urban road traffic noise pollution, and the results show that road traffic noise pollution has become one of the urban problems facing the world. In recent years, with the rapid increase of my country's urban population and the continuous improvement of living standards, the number of cars has increased year by year, and the traffic volume and traffic density have risen sharply, which has made urban road traffic noise pollution more and more serious, and there is still aggravation. trend. However, road traffic noise has significant characteristics such as high intensity and large range, which seriously disturb people's work, life and physical and mental health. In order to create...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/16C04B38/00E01C7/35C04B111/52C04B111/20
CPCC04B26/16E01C7/35C04B2111/0075C04B2111/52C04B2111/2046C04B2111/0037
Inventor 裴建中吕磊何海琦李阳陈钰娴李蕊
Owner CHANGAN UNIV
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