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Drainage type asphalt concrete abrasion layer and construction method thereof

An asphalt concrete and wear layer technology, applied in building components, building thermal insulation materials, buildings, etc., can solve the problems of low road strength and stability, slow construction speed, and scattered aggregates.

Inactive Publication Date: 2019-11-05
SHANGHAI ROAD & BRIDGE (GRP) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a drainage type asphalt concrete wear course and construction method in order to overcome the defects of the prior art that the aggregate in the asphalt mixture is scattered, the strength and stability of the road surface are not high, and the construction speed is too slow

Method used

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  • Drainage type asphalt concrete abrasion layer and construction method thereof
  • Drainage type asphalt concrete abrasion layer and construction method thereof
  • Drainage type asphalt concrete abrasion layer and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1-5

[0077] The raw material components of Examples 1-5 are all as described in Table 1.

[0078] Table 1

[0079] Raw material components Example 1 Example 2 Example 3 Example 4 Example 5 Super high viscosity modified asphalt bitumen ratio / % 5.1 5 4.9 4.9 4.8 Aggregate / % 95 97 97 97 97 Mineral powder / % 5 3 3 3 3 Porosity% 17 20 23 20 23 Asphalt concrete layer thickness / mm 15 15 15 20 20

[0080] Wherein, the amount of ultra-high-viscosity modified asphalt, the percentages in aggregate and mineral powder are all percentages by mass.

[0081] The above-mentioned aggregates are all composed of crushed stones. The specific types and proportions of the crushed stones are shown in Table 2. The above-mentioned mineral powders are specifically limestone mineral powders.

[0082] Table 2

[0083]

[0084]

[0085] (The above data refers to the mass ratio. For example, the first line of the data refers to: in E...

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Abstract

The invention discloses a drainage type asphalt concrete abrasion layer and a construction method thereof. The asphalt concrete abrasion layer comprises a bonding layer sprayed on an original pavementand an asphalt concrete layer laid on the bonding layer; the material for the asphalt concrete layer is an asphalt mixture; the asphalt mixture comprises, by mass, ultra-high-viscosity modified asphalt with the oil-stone ratio of 4.8%-5.1%, 95%-97% of aggregate and 3%-5% of mineral powder; the indexes of the ultra-high-viscosity modified asphalt are as follows: at 60 DEG C, the dynamic viscosityis greater than 105 Pa.s; at 60 DEG C, the shear stress is greater than 1000 Pa, and a softening point is greater than 100 DEG C; At -20 DEG C, the bending workload is greater than 1 MPa, and the bending stiffness is smaller than 100 MPa. The asphalt concrete layer and the bonding layer are adopted to prepare the concrete abrasion layer so that the strength and stability of the pavement can be effectively guaranteed, the bonding property with the original pavement is improved, and the construction speed is high.

Description

technical field [0001] The invention relates to the field of building materials for road engineering, in particular to a drainage type asphalt concrete wearing layer and a construction method. Background technique [0002] With the rapid development of my country's economy, the requirements for traffic capacity are increasing day by day, and the scale of road construction has also been greatly improved. However, after the road is in operation, the pavement surface layer is prone to decline in anti-sliding ability under the combined action of vehicle load and natural environment, and even loose, peeling, potholes and other water damage diseases, as well as surface damage caused by horizontal shear force. Cracks and other damage, cracks provide a channel for water to enter the pavement, and accelerate the generation of pavement diseases. In addition, with the rapid development of the automobile industry and the logistics industry, overloaded vehicles and traffic volumes have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C08L95/00C08L53/02
CPCC04B26/26C04B2111/0075C04B2201/50C08L95/00C08L53/02C04B18/12C04B14/14C04B14/28C04B2103/0068C04B2103/44
Inventor 陈智蓉李健牛晓伟王强周玥乐海淳蔡明周震沂
Owner SHANGHAI ROAD & BRIDGE (GRP) CO LTD
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