Semi-flexible composite pavement structure and preparation method thereof

A composite pavement, semi-flexible technology, applied in the field of semi-flexible composite pavement structure and its preparation, can solve the problems of poor driving comfort, many seams, rutting, etc., to overcome the problems of poor driving comfort, good road performance and high cost performance Effect

Inactive Publication Date: 2016-04-13
广西交通职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The early damage of asphalt pavement is mostly related to water corrosion, which affects the stability and durability of the asphalt pavement. The high temperature season is likely to cause serious rutting on the existing asphalt concrete pavement
[0004] Cement concrete pavement has disadvantages such as poor driving comfort, many joints, and difficult maintenance

Method used

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  • Semi-flexible composite pavement structure and preparation method thereof
  • Semi-flexible composite pavement structure and preparation method thereof
  • Semi-flexible composite pavement structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The semi-flexible composite pavement structure of the present invention includes the following components: 70% of the large-pore asphalt mixture matrix, 30% of rubber powder cement mortar;

[0023] The macroporous asphalt mixture matrix is ​​formed by mixing coarse aggregate, fine aggregate, active mineral powder and asphalt, wherein the coarse aggregate and fine aggregate are diabase or limestone, and the porosity of the mixture is 22%; The asphalt is SBS (I-D) modified asphalt, the asphalt ratio is 3.2%; the active ore powder is manganese slag ore powder, which is made of blast furnace water-quenched manganese iron slag, and after 20rain grinding under ethanolamine grinding aid The formed mineral powder, the main components of the manganese slag mineral powder are SiO and CaO, has pozzolanic activity, and the dosage is 3%; the particle size of the coarse aggregate is 5-16mm, and the particle diameter of the fine aggregate is 0-5mm , the particle size of the active min...

Embodiment 2

[0032] The semi-flexible composite pavement structure of the present invention includes the following components: 75% of the large-pore asphalt mixture matrix, 25% of rubber powder cement mortar;

[0033] The macroporous asphalt mixture matrix is ​​formed by mixing coarse aggregate, fine aggregate, active mineral powder and asphalt, wherein the coarse aggregate and fine aggregate are diabase or limestone, and the porosity of the mixture is 25%; The asphalt is SBS (I-D) modified asphalt, the asphalt ratio is 2.8%; the active ore powder is manganese slag ore powder, which is made of blast furnace water-quenched manganese iron slag, after 20rain grinding under ethanolamine grinding aid The formed mineral powder, manganese slag mineral powder is mainly composed of SiO and CaO, has pozzolanic activity, and the dosage is 2.5%; the particle size of the coarse aggregate is 5-16mm, and the particle diameter of the fine aggregate is 0-5mm , the particle size of the active mineral powder...

Embodiment 3

[0042] The semi-flexible composite pavement structure of the present invention includes the following components: 80% of the large-pore asphalt mixture matrix, 20% of rubber powder cement mortar;

[0043] The macroporous asphalt mixture matrix is ​​formed by mixing and stirring coarse aggregate, fine aggregate, active mineral powder and asphalt, wherein the coarse aggregate and fine aggregate are diabase or limestone, and the porosity of the mixture is 28%; The asphalt is SBS (I-D) modified asphalt, the asphalt ratio is 2.4%; the active ore powder is manganese slag ore powder, which is made of blast furnace water-quenched manganese iron slag, after 20rain grinding under ethanolamine grinding aid The formed mineral powder, manganese slag mineral powder is mainly composed of SiO and CaO, has pozzolanic activity, and the dosage is 2.0%; the particle size of the coarse aggregate is 5-16mm, and the particle diameter of the fine aggregate is 0-5mm , the particle size of the active m...

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Abstract

The invention provides a semi-flexible composite pavement structure and a preparation method thereof. The semi-flexible composite pavement structure comprises components in percentage by weight as follows: 70%-80% of a macro-porous asphalt mixture matrix and 20%-30% of rubber powder cement mortar; the macro-porous asphalt mixture matrix is prepared firstly, then the rubber powder cement mortar is prepared, the rubber powder cement mortar is poured into a mixture gap of the macro-porous asphalt mixture matrix finally, and a product can be utilized after maintenance. According to the semi-flexible composite pavement structure, the defects of asphalt pavements and cement concrete pavements in China at present are overcome, rigidity of the cement concrete pavements and the flexibility of the asphalt pavements are integrated, the respective advantages of rigid and flexible pavement structures can be sufficiently played, the respective defects of the rigid and flexible pavement structures are overcome, and the semi-flexible composite pavement structure is a novel pavement structure with better pavement performance and higher cost performance.

Description

technical field [0001] The invention relates to a road engineering pavement structure, in particular to a semi-flexible composite pavement structure and a preparation method thereof. Background technique [0002] my country's existing road pavement is mainly divided into two categories: asphalt pavement and cement concrete pavement. [0003] The early damage of asphalt pavement is mostly related to water corrosion, which affects the stability and durability of the asphalt pavement. The high temperature season is likely to cause serious rutting on the existing asphalt concrete pavement. [0004] Cement concrete pavement has disadvantages such as poor driving comfort, many joints, and difficult maintenance and repair. Contents of the invention [0005] In view of the various problems faced in the background technology, the purpose of the present invention is to provide a kind of advantages of both the flexibility of the asphalt pavement and the rigidity of the cement concre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/00C04B24/36
CPCC04B28/04C04B20/0076C04B2111/0075C04B2111/20C04B2111/343C04B2201/50C04B14/04C04B18/144C04B24/36C04B14/06C04B24/24C04B2103/0068C04B2103/0091C04B2103/302C04B2103/465C04B14/26C04B22/0093C04B24/42C04B24/28C04B24/38
Inventor 覃峰李荣辉
Owner 广西交通职业技术学院
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