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Half-flexible water drainage skid-free noise-reducing road surface pavement structure

A semi-flexible pavement and semi-flexible technology, applied in the field of material science and engineering, can solve problems such as easy cracking of pavement, influence of pavement aesthetics, and impact on driving comfort

Active Publication Date: 2008-05-28
WUHAN MUNICIPAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, because this kind of pavement is all paved on the wear layer of the pavement, there are following problems: 1) the semi-flexible general elastic modulus of the preparation is relatively large, causing the rigidity of the pavement to increase, and the pavement is easy to crack; 2) the rigidity of the pavement increases, smooth 3) The aesthetics of the road surface is greatly affected

Method used

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  • Half-flexible water drainage skid-free noise-reducing road surface pavement structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of materials:

[0043](1) Preparation of drainage anti-slip and noise-reducing wear layer (drainage, anti-skid, noise-reduction wear layer) materials:

[0044] (1) Preparation of high-viscosity modified asphalt: high-viscosity modified asphalt is composed of styrene-butadiene-styrene block copolymer (SBS), activated rubber powder, compatibilizing resin, antioxidant and matrix asphalt; matrix The mass ratio of asphalt, styrene-butadiene-styrene block copolymer, activated rubber powder, compatibilizing resin and antioxidant is 100: 10.6: 3.7: 2.5: 0.3; wherein, the compatibilizing resin is selected rosin glycerin resin, The antioxidant is carbon black, and the base asphalt is AH-70 heavy traffic asphalt; the specific preparation steps are: melt the base asphalt, mix it with styrene-butadiene-styrene block copolymer and compatibilizing resin, and heat it at 170°C Stir under low pressure for 18 minutes, then use a high-speed emulsifying shearer to shear at a...

Embodiment 2

[0089] 1. Preparation of materials:

[0090] (1) The semi-rigid base layer is composed of the following raw materials, and the parts by weight of each raw material are: a) Mineral material: 100 parts; b) Cement: 5 parts; c) Water: 5 parts.

[0091] The mineral material can be limestone or granite, and the mineral material gradation is shown in Table 12.

[0092] (2) Modified emulsified asphalt slurry seal layer material:

[0093] The modified emulsified asphalt slurry seal layer is formed by mixing the following raw materials, and the parts by weight of each raw material are: a) mineral aggregate: 100 parts; b) emulsified asphalt: 15 parts; wherein the mineral aggregate is composed of aggregate and filler, The mass ratio of aggregate to filler is 100:11.1; the aggregate is basalt, the filler is limestone powder, and the emulsified asphalt is SBR modified emulsified asphalt.

[0094] (3) The semi-flexible pavement material structure layer is formed by pouring polymer modified...

Embodiment 3

[0112] 1. Preparation of materials:

[0113] (1) The semi-rigid base layer is composed of the following raw materials, and the parts by weight of each raw material are: a) Mineral material: 100 parts; b) Cement: 5 parts; c) Water: 5 parts.

[0114] The mineral material can be limestone or granite, and the mineral material gradation is shown in Table 12.

[0115] (2) The modified emulsified asphalt slurry seal layer is formed by mixing the following raw materials, and the parts by weight of each raw material are: a) Mineral material: 100 parts; b) Emulsified asphalt: 15 parts; wherein the mineral material is made of aggregate The mass ratio of aggregate to filler is 100:11.1; the aggregate is diabase, the filler is limestone slag, and the emulsified asphalt is SBR modified emulsified asphalt.

[0116] (3) The semi-flexible pavement material structure layer is formed by pouring polymer modified cement-based grouting material on the macroporous asphalt mixture matrix on the modi...

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Abstract

The invention relates to a road paving structure, which is a semi-flexible, draining, antiskid and noise-reducing paving structure and comprises a semi-rigid foundation layer. The invention is characterized in that the semi-rigid foundation layer is paved with a modified emulsified asphalt slurry sealing layer, the sealing layer is filled with a semi-flexible road surface material structure layer on the surface, the semi-flexible road surface material structure layer is distributed with a high-viscosity modified asphalt adhesive layer, and the adhesive layer is paved with a draining, antiskid and noise-reducing abrasion layer. The road paving structure has stable property under high temperature, is provided with draining, noise-reducing and antiskid functions, and can effectively prevent water damages and has long service life.

Description

technical field [0001] The invention belongs to the field of material science and engineering, and in particular relates to a road surface pavement structure. Background technique [0002] With the development of the national economy, the construction of high-grade highways in our country, especially the construction of expressways, has advanced by leaps and bounds. Due to the complex climate environment and poor traffic conditions, many high-grade highways have not been put into use for a long time, and there are different degrees of early damage, such as major diseases such as rutting, water damage and cracking on the asphalt concrete pavement, and cement concrete pavement. Broken boards, cracks, voids and mud pumping damage. Although a large amount of money has been invested in maintenance every year, it is often too much to make up for. Not only is the maintenance investment in the later period large, but it also affects the traffic capacity and driving comfort, causing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32
Inventor 胡曙光刘祖国丁庆军黄绍龙刘新权黄工吴学伟黄修林张荣鹍付军吕林女王发洲何永佳
Owner WUHAN MUNICIPAL CONSTR GROUP
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