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High-performance cold patch asphalt, cold patch material based on waste asphalt pavement material and preparation methods of cold patch asphalt and cold patch material

A technology for cold patching asphalt and pavement materials, which is applied to building thermal insulation materials, building components, buildings, etc., can solve the problems of the stacking cost of milling materials, the great influence of temperature conditions, and the high price of cold patching materials, so as to reduce pavement diseases. , good durability, high overall strength

Active Publication Date: 2018-08-03
SHANDONG TRANSPORTATION INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the cold patching materials on the market adopt the method of adding cold patching asphalt to the new material. This kind of cold patching material is often expensive, and it is greatly affected by temperature conditions. Generally, after entering the construction season in northern regions, it needs Excavating the cold patch repaired in cold seasons and replenishing the hot mix asphalt mixture, resulting in a large waste
[0003] In addition, as my country's highways began to shift from new construction to maintenance and repair of existing roads, a large number of road surface repairs produced a large amount of asphalt milling materials. On the one hand, a large amount of milling materials caused environmental pollution. The stacking will also consume the cost of stacking, so rational and efficient use of milling materials will also become an important task of maintenance

Method used

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  • High-performance cold patch asphalt, cold patch material based on waste asphalt pavement material and preparation methods of cold patch asphalt and cold patch material
  • High-performance cold patch asphalt, cold patch material based on waste asphalt pavement material and preparation methods of cold patch asphalt and cold patch material
  • High-performance cold patch asphalt, cold patch material based on waste asphalt pavement material and preparation methods of cold patch asphalt and cold patch material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of high performance cold patch asphalt:

[0042] Heat 90# road petroleum A-grade asphalt to 150°C, and mix it with the active regeneration additive at room temperature in a ratio of 1:1 by weight. The mixing of the two is required to be completed within 10 minutes. For the production of large-tonnage cold-mix asphalt, it can be Finished in asphalt storage tanks with agitators. In the absence of heating, start the stirrer and stir in this state for 1-2 hours. For small-volume cold-mix asphalt, it can be produced by mixing in iron drums, and the mixture can be stirred evenly by hand.

[0043] The active regenerative additive is uniformly mixed from the following materials:

[0044]

Embodiment 2

[0046] Preparation of Cold Feed:

[0047] [Binder] The high-performance cold-patch asphalt obtained in Example 1.

[0048] 【Aggregate】Waste asphalt pavement materials

[0049] Use 5mm*5mm, 10mm*10mm, and 15*15mm sieves to sieve waste asphalt pavement materials into three grades, and the gradation range of each grade is as follows:

[0050]

[0051]

[0052] The cold feed material adopts medium-grain gradation, and the synthetic gradation is shown in the following table:

[0053] mesh size

19

13.2

9.5

4.75

2.36

1.18

0.6

0.3

0.15

0.075

synthetic grading

100.0

96.0

83.5

56.5

35.2

23.5

13.9

6.6

3.3

1.9

Grading requirements

100.0

90-100

-

50-75

30-55

-

-

-

-

2-7

[0054] 【Preparation】

[0055] Add the cold-patch aggregate with a weight ratio of 99:1 and the high-performance cold-patch asphalt to the mixing equipment for mixing, ...

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Abstract

The invention discloses high-performance cold patch asphalt, a cold patch material based on a waste asphalt pavement material and preparation methods of the cold patch asphalt and the cold patch material, and belongs to the field of road engineering. The cold patch asphalt is prepared from an active recycling additive and 90# road petroleum level-A asphalt in a weight ratio of 1:(0.9-1.1) by mixing. The waste asphalt pavement material is adopted as aggregate of the cold patch material. Compared with the prior art, the cold patch asphalt can be subjected to a chemical reaction with old asphaltin the waste asphalt pavement material, so that pavement performance of the cold patch material can meet high practical requirements, service life of the cold patch material is prolonged, pavement diseases are reduced, and good popularization and application values are realized.

Description

technical field [0001] The invention relates to road engineering, in particular to a high-performance cold-patch asphalt, a cold-patch material based on waste asphalt pavement materials and a preparation method for the two. Background technique [0002] Since the use of hot mix asphalt mixture is not allowed under the condition that the maximum daytime temperature is below 10°C, cold patching materials are generally used for the maintenance of pits and potholes in the maintenance of asphalt pavement in northern my country in winter. Most of the cold patching materials on the market adopt the method of adding cold patching asphalt to the new material. This kind of cold patching material is often expensive, and it is greatly affected by temperature conditions. Generally, after entering the construction season in northern regions, it needs Excavating the cold patch repaired in the cold season and replenishing the hot mix asphalt mixture caused a large waste. [0003] In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/06C08L21/00C08K5/134C08K5/053C08K5/092
CPCC08L95/00C08L2205/025C08L2205/035C08L2207/22C08L91/06C08L21/00C08K5/1345C08K5/053C08K5/092
Inventor 董昭韦金城付建村孙强姚爱超
Owner SHANDONG TRANSPORTATION INST
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