Hot-mix cold-lay rubber asphalt mixture

A technology for rubberized asphalt and mixtures, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve the effect of stable performance

Inactive Publication Date: 2012-01-25
上海道柯特沥青科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of waste rubber powder modified asphalt in hot mix cold pavement asphalt mixture has not been reported in the literature.

Method used

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  • Hot-mix cold-lay rubber asphalt mixture
  • Hot-mix cold-lay rubber asphalt mixture
  • Hot-mix cold-lay rubber asphalt mixture

Examples

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Embodiment Construction

[0018] The present invention is further set forth below in conjunction with embodiment. It should be understood that these examples are only used to illustrate the present invention, not to limit the scope of the present invention.

[0019] 1. Material selection

[0020] Waste rubber powder: It is made by crushing waste tires, 40-80 mesh.

[0021] Solvent oil: rubber solvent oil, the boiling range is 80-120°C.

[0022] Silane coupling agent: the model is KH550.

[0023] Thermoplastic elastomer: BT-1047D.

[0024] Petroleum asphalt: 70#-A grade road petroleum asphalt, ductility 164cm, softening point 52.5°C, flash point 295°C, penetration 79mm.

[0025] 2. Grading range: Granite is used for coarse aggregate and fine aggregate, and the grading range is shown in Table 1.

[0026] Table 1 Grading of aggregates

[0027] Mesh size / mm

9.5

4.75

2.36

1.18

0.6

0.3

0.15

0.075

Passing percentage / %

100

86

...

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Abstract

The invention provides a hot-mix cold-lay rubber asphalt mixture. The mixture is characterized in that: the mixture comprises rubber asphalt and an aggregate; the aggregate comprises a coarse aggregate, a fine aggregate and ore powder; and the rubber asphalt comprises the following components, by weight, 1.5-10% of rubber powder, 5-15% of solvent naphtha, 0.1-5% of a silane coupling agent, 2-5% of a thermoplastic elastomer, and the balance petroleum asphalt. The silane coupling agent, which is added to rubber powder modified asphalt in the invention, allows a separation problem of the rubber powder and asphalt to be effectively solved. The obtained hot-mix cold-lay rubber powder modified asphalt mixture can keep a good loosened state for several months and all performances are stable in normal temperature conditions.

Description

technical field [0001] The invention relates to a hot-mixed cold-paved rubber asphalt mixture and a preparation method thereof, belonging to the field of building materials. Background technique [0002] During the long-term use of asphalt pavement, there will be loose, potholes, peeling and other diseases. Pavement disease not only reduces the service capacity of the pavement, but also mainly affects the normal traffic on the road, and the potholes on the expressway may even cause traffic accidents. Therefore, the potholes and damages on the road surface need to be repaired in time. [0003] At present, hot-mix asphalt mixture is mostly used in road construction, which requires high temperature during production and construction, and cannot be opened to traffic immediately after construction, and the product cannot be reused. The environment has a great impact on construction. Hot mix cold paving asphalt mixture is different from ordinary hot mix asphalt mixture. It is pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/22C04B26/26
CPCY02W30/91
Inventor 李小军张燕
Owner 上海道柯特沥青科技有限公司
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