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High-performance porous pavement mixture and normal-temperature preparation method thereof

A mixture, high-performance technology, used in ceramic products, other household appliances, applications, etc., can solve problems such as insufficient performance, porous pavement mixture cannot be constructed at room temperature, etc., to achieve excellent mechanical properties, excellent performance, durability and compatibility. Good results

Pending Publication Date: 2022-04-12
HEFEI MUNICIPAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the current porous pavement mixture cannot be constructed at normal temperature and has insufficient performance, the present invention provides a high-performance porous pavement mixture with good road performance and its preparation method at normal temperature

Method used

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  • High-performance porous pavement mixture and normal-temperature preparation method thereof
  • High-performance porous pavement mixture and normal-temperature preparation method thereof
  • High-performance porous pavement mixture and normal-temperature preparation method thereof

Examples

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Embodiment 1

[0035] A kind of high-performance porous pavement mixture of the present invention, described high-performance porous pavement mixture is made up of the following components in parts by weight:

[0036] 100 pieces of mineral material,

[0037] 20 parts of water-based polyurethane emulsion,

[0038] Emulsified asphalt 13 parts.

[0039] The mineral material is composed of coarse aggregate, fine aggregate and filler; the coarse aggregate is basalt, and the fine aggregate and filler are limestone.

[0040] The weight ratio of the coarse aggregate, fine aggregate and filler is 85:10:8, and the gradation meets the gradation requirement of porous pavement.

[0041] The particle diameter of the coarse aggregate is >4.75mm, the particle diameter of the fine aggregate is ≤4.75mm, and the particle diameter of the filler is ≤0.075mm.

[0042] The emulsified asphalt is non-ionic emulsified asphalt.

[0043] The water-based polyurethane emulsion is an emulsion of water-based polyuretha...

Embodiment 2

[0052] The difference between embodiment 2 and embodiment 1 is: a kind of high-performance porous pavement mixture of the present invention, described high-performance porous pavement mixture is made up of the following components in parts by weight:

[0053] 100 pieces of mineral material,

[0054] 15 parts of water-based polyurethane emulsion,

[0055] Emulsified asphalt 10 parts.

[0056] The coarse aggregate is diabase.

[0057] The weight ratio of the coarse aggregate, fine aggregate and filler is 75:20:3, and the gradation meets the gradation requirement of porous pavement.

[0058] In order to control the water content of the mixture, the emulsified asphalt is commercially available cationic emulsified asphalt, and the solid content of the emulsified asphalt needs to be ≥ 50%.

[0059] The water-based polyurethane emulsion is a dispersion liquid of water-based polyurethane, and its solid content is 50%.

[0060] The aqueous polyurethane emulsion is a linear molecula...

Embodiment 3

[0068] The difference between embodiment 3 and embodiment 1 is: a kind of high-performance porous pavement mixture of the present invention, described high-performance porous pavement mixture is made up of the following components in parts by weight:

[0069] 100 pieces of mineral material,

[0070] 18 parts of water-based polyurethane emulsion,

[0071] Emulsified asphalt 15 parts.

[0072] The weight ratio of the coarse aggregate, fine aggregate and filler is 80:26:5, and the gradation meets the gradation requirements of porous pavement.

[0073] The emulsified asphalt is cationic emulsified asphalt.

[0074] The water-based polyurethane emulsion is an emulsion of water-based polyurethane, and its solid content is 30%.

[0075] The present invention also provides a method for preparing the above-mentioned high-performance porous pavement mixture at normal temperature, comprising the following steps:

[0076] In step (1), the coarse aggregate and the fine aggregate with a...

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Abstract

The invention discloses a high-performance porous pavement mixture, which is prepared from the following components in parts by weight: 100 parts of mineral aggregate, 15 to 20 parts of waterborne polyurethane emulsion and 10 to 15 parts of emulsified asphalt. The invention also discloses a normal-temperature preparation method of the high-performance porous pavement mixture. The high-viscosity modified asphalt porous pavement mixture disclosed by the invention has good high-temperature stability, low-temperature stability and water stability, is superior to a high-viscosity modified asphalt porous pavement mixture in performance, and also has the advantages of normal-temperature construction, no pollution, safety and reliability.

Description

technical field [0001] The invention relates to the technical field of performance optimization of porous pavement materials, in particular to a high-performance porous pavement mixture and a preparation method thereof at normal temperature. Background technique [0002] Conventional porous pavement mixtures for drainage or noise reduction use modified asphalt (even high-viscosity modified asphalt) as the binder, and the coarse aggregate and fine aggregate need to be heated to a high temperature above 190°C during the preparation process , asphalt also needs to be heated above 180°C to prepare porous asphalt mixture, which consumes a lot of energy and does not conform to the current national strategy of energy conservation and emission reduction; high temperature conditions in the production process also accelerate the aging of asphalt and reduce the wear and tear of the road surface. Durability; the high-temperature flue gas in the production process pollutes the environmen...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B24/28C04B38/00C04B111/40C04B111/76
Inventor 吴伟廖公云浦玉炳张乾坤盛云霓王敦红倪彬章龙信李依纯刘晓东艾峰
Owner HEFEI MUNICIPAL DESIGN INST
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