Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing damping porous denoise tunnel asphalt covering material

An asphalt surface layer and damping technology, applied in the field of material science and engineering, can solve the problems of uncontrollable combustion of gasoline and other liquid combustion materials, no control effect of tunnel vehicle fire, and reduction of the limiting oxygen index of flame retardant asphalt, so as to enhance the durability of the structure. and noise reduction, reducing casualties and economic losses, and reducing fire hazards

Active Publication Date: 2008-05-07
WUHAN MUNICIPAL CONSTR GROUP
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, large-scale road tunnels have the characteristics of closed space, poor ventilation, and high noise. For fire safety considerations, large-scale road tunnels are very cautious in the use of asphalt materials
Some organic flame retardants, such as brominated flame retardants, are used in longer tunnels, and the pavement type is mostly AC series asphalt concrete, but this kind of flame-retardant asphalt concrete pavement cannot control the combustion of liquid combustibles such as gasoline at all, and is harmful to tunnel vehicles. The fire has no control effect. Studies have shown that under the high temperature state of complete combustion of gasoline, the limiting oxygen index of flame-retardant asphalt will be greatly reduced, and compared with gasoline and other combustibles, the partial combustion of asphalt pavement is negligible at all, so it must be effectively controlled Amount of combustible liquids such as gasoline participating in the combustion in the tunnel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a damping porous noise-reducing tunnel asphalt surface material, which comprises the following steps:

[0027] 1) Preparation of high-viscosity and high-elasticity modified asphalt: high-viscosity and high-elasticity modified asphalt is composed of base asphalt, modifier SBS, activated rubber powder, viscosifying compatibilizer, antioxidant and stabilizer, according to each component The mass ratio is base asphalt: modifier SBS: activated rubber powder: thickening compatibilizer: antioxidant: stabilizer = 100: 6.0: 20.2: 1.2: 0.2: 0.4, select base asphalt, modifier SBS, Activated rubber powder, thickening compatibilizer, antioxidant and stabilizer, spare;

[0028] Firstly, the melted matrix asphalt and the modifier SBS are put into the colloid mill for grinding, after one cycle, the viscosifying compatibilizer, antioxidant and stabilizer are added, and the grinding is continued for 3 cycles, the temperature is controlled at 150°C, and then Put th...

Embodiment 2

[0043] A method for preparing a damping porous noise-reducing tunnel asphalt surface material, which comprises the following steps:

[0044] 1) Preparation of high-viscosity and high-elasticity modified asphalt: high-viscosity and high-elasticity modified asphalt is composed of base asphalt, modifier SBS, activated rubber powder, viscosifying compatibilizer, antioxidant and stabilizer, according to each component The mass ratio is base asphalt: modifier SBS: activated rubber powder: thickening compatibilizer: antioxidant: stabilizer = 100: 12.4: 29.1: 2.6: 0.7: 0.8, select base asphalt, modifier SBS, Activated rubber powder, thickening compatibilizer, antioxidant and stabilizer, spare;

[0045] Firstly, the melted matrix asphalt and the modifier SBS are put into the colloid mill for grinding, after one cycle, the viscosity-increasing compatibilizer, antioxidant and stabilizer are added, and the grinding is continued for 4 cycles, the temperature is controlled at 170°C, and the...

Embodiment 3

[0061] A method for preparing a damping porous noise-reducing tunnel asphalt surface material, which comprises the following steps:

[0062] 1) Preparation of high-viscosity and high-elasticity modified asphalt: high-viscosity and high-elasticity modified asphalt is composed of base asphalt, modifier SBS, activated rubber powder, viscosifying compatibilizer, antioxidant and stabilizer, according to each component The mass ratio is base asphalt: modifier SBS: activated rubber powder: thickening compatibilizer: antioxidant: stabilizer=100: 18.3: 45.7: 3.7: 1.4: 1.9, select base asphalt, modifier SBS, Activated rubber powder, thickening compatibilizer, antioxidant and stabilizer, spare;

[0063] Firstly, the melted base asphalt and the modifier SBS are put into the colloid mill for grinding, after one cycle, the viscosifying compatibilizer, antioxidant and stabilizer are added, and the grinding is continued for 6 cycles, the temperature is controlled at 180°C, and then Pass the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a tunnel asphalt surface layer material. A preparation method for damping porous noise-reducing tunnel asphalt pavement material is characterized in that it comprises the following steps: 1) preparation of high-viscosity and high-elasticity modified asphalt: base asphalt according to the mass ratio of each component: modifier SBS : Activated rubber powder: Viscosifying compatibilizer: Antioxidant: Stabilizer=100: 6.0~18.3: 20.2~45.7: 1.2~3.7: 0.2~1.4: 0.4~1.9, select; obtain high viscosity and high elasticity modification Asphalt; 2) Add flame retardant to high-viscosity and high-elasticity modified asphalt, heat and melt high-viscosity and high-elasticity modified asphalt to add flame retardant, stir for 3-9 minutes, and stand at 150-170°C for 15-30 minutes to obtain Flame-retardant high-viscosity high-elasticity modified asphalt; 3) according to the mass ratio, mineral material: flame-retardant high-viscosity high-elasticity modified asphalt: fiber stabilizer = 100: 3.6~5.2: 0.1~0.4, choose; noise tunnel asphalt surface material. The invention has the functions of noise reduction, flame retardancy and anti-skid.

Description

technical field [0001] The invention belongs to the field of material science and engineering, and in particular relates to a preparation method of a tunnel asphalt surface material. technical background [0002] The noise of tunnels is a technical issue of general concern. At present, the research on noise reduction pavement mostly focuses on the use of porous asphalt mixture, such as OGFC asphalt mixture, to absorb noise and eliminate the tire pumping effect. However, the sound absorption effect of porous materials is limited, reducing the The noise effect is generally only 2-4dB, which cannot fundamentally solve the problem of tunnel noise. The damping technology is mainly to add some materials that increase elasticity or have a space network structure to the asphalt to improve the damping characteristics of the material and eliminate the vibration and noise of the tires and even the vehicle body during driving. [0003] At present, large-scale road tunnels have the char...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08J3/20C08K3/34C08L53/00C08L57/02C08L21/00
Inventor 丁庆军胡曙光刘新权黄绍龙吴学伟沈凡方杨
Owner WUHAN MUNICIPAL CONSTR GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com