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Method for paving combination paving layer for tunnel road surface

A paving layer and road surface technology, applied in the field of building materials, can solve the problems of life safety, poor driving comfort, low sound absorption coefficient, etc., achieve good isolation effect, improve anti-skid ability, and good fire performance

Active Publication Date: 2010-03-17
WUHAN MUNICIPAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, traffic design codes require that cement concrete pavement be used for tunnel pavement. Due to the dense structure of concrete pavement pavement and relatively low sound absorption coefficient, the noise pollution generated by vehicles driving on cement concrete pavement is very serious. In addition, the rigidity of concrete pavement makes it comfortable to drive. Poor sex
Ordinary asphalt pavement has the advantages of beautiful appearance and good driving comfort, but when a fire breaks out in the tunnel, the asphalt pavement currently in use will also burn, and the large amount of toxic fumes emitted directly threaten human safety

Method used

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  • Method for paving combination paving layer for tunnel road surface
  • Method for paving combination paving layer for tunnel road surface
  • Method for paving combination paving layer for tunnel road surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Such as figure 1 Shown, a kind of pavement method of tunnel pavement composite pavement, it comprises the steps:

[0075] 1) Preparation of flame-retardant high-viscosity modified asphalt:

[0076] Flame-retardant high-viscosity modified asphalt is composed of styrene-butadiene-styrene block copolymer (SBS), tackifier, compatibilizer, stabilizer, flame-retardant and smoke suppressant and base asphalt. The mass of each component The ratio is base asphalt: styrene-butadiene-styrene block copolymer: tackifier: compatibilizer: stabilizer: flame retardant and smoke suppressant = 100: 7.0: 1.5: 6.0: 0.5: 7.0; Add styrene-butadiene-styrene block copolymer after the base asphalt is melted, stir at a low speed of 10min at 150°C, then pass through a high-speed shearing machine, stir at a high speed of 45min at 160°C, and the speed is 3000r / min. Then place it at 140°C for 60 minutes to make it fully swell, and finally add tackifier, compatibilizer, stabilizer and flame retardant...

Embodiment 2

[0113] A pavement method for a combined pavement layer of a tunnel pavement, comprising the steps of:

[0114] 1) Preparation of flame-retardant high-viscosity modified asphalt:

[0115] Flame-retardant high-viscosity modified asphalt is composed of styrene-butadiene-styrene block copolymer (SBS), tackifier, compatibilizer, stabilizer, flame-retardant and smoke suppressant and base asphalt. The mass of each component The ratio is base asphalt: styrene-butadiene-styrene block copolymer: tackifier: compatibilizer: stabilizer: flame retardant and smoke suppressant = 100: 11.2: 3.0: 13.9: 1.2: 11.6; Add styrene-butadiene-styrene block copolymer after the base asphalt is melted, stir at a low speed of 15min at 170°C, then pass through a high-speed shearing machine, stir at a high speed of 60min at 180°C, and the speed is 4000r / min, Then place it at 150°C for 90 minutes to make it fully swell, and finally add tackifier, compatibilizer, stabilizer and flame retardant and smoke suppr...

Embodiment 3

[0152] A pavement method for a combined pavement layer of a tunnel pavement, comprising the steps of:

[0153] 1) Preparation of flame-retardant high-viscosity modified asphalt:

[0154] Flame-retardant high-viscosity modified asphalt is composed of styrene-butadiene-styrene block copolymer (SBS), tackifier, compatibilizer, stabilizer, flame-retardant and smoke suppressant, and base asphalt. The mass of each component The ratio is base asphalt: styrene-butadiene-styrene block copolymer: tackifier: compatibilizer: stabilizer: flame retardant and smoke suppressant = 100: 5.2: 1.0: 5.0: 0.2: 6.5; Add styrene-butadiene-styrene block copolymer after the base asphalt is melted, stir at a low speed of 10 minutes at 150°C, and then pass through a high-speed shearer, stir at a high speed of 45 minutes at 160°C, and the speed is 3000r / min. Then place it at 140°C for 60 minutes to make it fully swell, and finally add tackifier, compatibilizer, stabilizer and flame retardant and smoke su...

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Abstract

The invention belongs to the field of building materials and particularly relates to a method for paving a pavement paving layerfor a tunnel road surface. The method is characterized by comprising thefollowing steps: firstly, preparing flame retardant high-viscosity modified asphalt which is prepared from styrene-butadiene-styrene block copolymer, tackifier, compatibilizer, stabilizer, flame retardant and smoke suppressant and base asphalt; secondly, cleaning the surface of a concrete layer 1 of the tunnel surface; thirdly, paving and spreading a bottom surface adhesive layer, i.e. spreadingand paving modified emulsion asphalt on the concrete layer 1 of the cleaned tunnel surface by utilizing an asphalt spreading and paving vehicle to obtain a bottom surface bonding layer 2, wherein thespreading and paving quantity of the modified emulsion asphalt is 0.8-1.0kg / m<2>; fourthly, paving a mid-surface layer which can highly resist rutting; fifthly, paving a waterproof and oilproof bonding layer; and sixthly, paving a fireproof, noise reducing and anti-slip top surface layer. The combination paving layer obtained from the method has the characteristics of excellent pavement performance, fireproofness, slip resistance and noise reduction.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a paving method for a tunnel pavement pavement layer. Background technique [0002] With the take-off of the world economy, all major economic countries in the world have accelerated the pace of road construction, and regard the establishment of a road network extending in all directions, smooth, convenient, comfortable and safe as the primary goal of promoting the rapid development of their own economy. However, limited land and space resources cannot meet the increasing traffic demand. In the middle and late 20th century, with the maturity of shield tunneling technology, people began to focus on the development of underground space, and the number and length of road tunnels continued to increase. [0003] The interior of the tunnel is a semi-enclosed space. Once a traffic accident occurs, a vehicle fires, gasoline and other flammable liquids flow and spread, and t...

Claims

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Application Information

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IPC IPC(8): E01C19/10E01C19/16E01C19/18E01C19/22
Inventor 丁庆军李潜黄绍龙胡曙光沈凡孙政
Owner WUHAN MUNICIPAL CONSTR GROUP
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