Ultrathin overlay mixture for preventive maintenance of asphalt pavement, preparation method and additive

A technology of preventive maintenance and asphalt pavement, which is applied in the field of preventive maintenance of asphalt pavement, can solve the problems of restricting popularization and application and high construction cost, and achieve the effects of simple process, high production efficiency, and good anti-fatigue and anti-cracking ability

Active Publication Date: 2022-02-22
北京中天路业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the sticky asphalt and asphalt binder used in the ultra-thin wear layer need to use special asphalt, and the construction equipment must use special thin-layer paver, resulting in high construction costs, which restricts the further popularization and application of this technology

Method used

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  • Ultrathin overlay mixture for preventive maintenance of asphalt pavement, preparation method and additive
  • Ultrathin overlay mixture for preventive maintenance of asphalt pavement, preparation method and additive
  • Ultrathin overlay mixture for preventive maintenance of asphalt pavement, preparation method and additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: A kind of asphalt pavement preventive maintenance ultra-thin overlay mixture preparation method provided in this embodiment, it comprises the following steps:

[0028] (1) Prepare raw materials: each component of raw materials and its mass percentage are as follows: aggregate 85%, mineral powder 10%, asphalt 4.6%, asphalt pavement preventive maintenance ultra-thin overlay additive 0.4%;

[0029] The asphalt pavement preventive maintenance ultra-thin overlay additive, its components and their mass percentages are as follows: thermoplastic elastomer 45%, 4006 industrial white oil 40%, polyethylene wax 2%, C5 petroleum resin 10%;

[0030] (2) Heating: heat the aggregate to 160-170°C and send it to the hot silo of the asphalt mixing station;

[0031] (3) Stirring: add the asphalt pavement preventive maintenance ultra-thin overlay additive into the hot silo of the asphalt mixing station, and stir for 5 to 10 seconds, preferably 10 seconds;

[0032] (4) Mixing:...

Embodiment 2

[0050]Example 2, a preparation method of an asphalt pavement preventive maintenance ultra-thin overlay mixture provided in this example, which is basically the same as in Example 1, the difference is that the asphalt pavement preventive maintenance ultra-thin overlay additive and the asphalt pavement preventive maintenance The components and their mass percentages in the curing ultra-thin overcoat mixture are different. The components and mass percentages of the asphalt pavement preventive maintenance ultra-thin overlay mixture are as follows: aggregate 90%, mineral powder 5%, asphalt 4.5%, asphalt pavement preventive maintenance ultra-thin overlay additive 0.5%; The components and mass percentages of the asphalt pavement preventive maintenance ultra-thin overlay additive are as follows: thermoplastic elastomer 40%, 4006 industrial white oil 45%, polyethylene wax 10%, C5 petroleum resin 5%.

Embodiment 3

[0051] Example 3: The preventive maintenance ultra-thin overlay additive for asphalt pavement and its preparation method provided in this example are basically the same as in Example 1, the difference is that the ultra-thin overlay additive for preventive maintenance of asphalt pavement and the asphalt pavement preventive The components and their mass percentages in the permanent maintenance ultra-thin overlay mixture are different. The components and mass percentages of the asphalt pavement preventive maintenance ultra-thin overlay mixture are as follows: aggregate 80%, mineral powder 15%, asphalt 4.4%, asphalt pavement preventive maintenance ultra-thin overlay additive 0.6%; The components and mass percentages of the asphalt pavement preventive maintenance ultra-thin overlay additive are as follows: thermoplastic elastomer 50%, 4006 industrial white oil 35%, polyethylene wax 8%, C5 petroleum resin 7%.

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Abstract

The invention discloses an ultrathin overlay mixture for preventive maintenance of an asphalt pavement, a preparation method and an additive. The mixture comprises the following components: 80-90% of aggregate, 5-15% of mineral powder, 4-4.8% of asphalt and 0.15-0.6% of an ultrathin overlay additive for preventive maintenance of asphalt pavement, wherein the ultrathin overlay additive for preventive maintenance of the asphalt pavement comprises the following components: 40-50% of a thermoplastic elastomer, 35-45% of 4006 industrial white oil, 1-10% of polyethylene wax and 5-15% of C5 petroleum resin. According to the present invention, the formula of the ultrathin overlay additive is reasonable, the anti-scattering ability and the water damage resistance of the ultrathin overlay additive can be improved, the flexibility of the surface layer concrete can be improved, and the good anti-fatigue and anti-cracking ability can be provided; and the additive is produced by directly putting the additive into a mixing station, special equipment is not needed, the process is simple, and wide popularization and application are facilitated.

Description

technical field [0001] The invention belongs to the technical field of asphalt pavement preventive maintenance, and in particular relates to a preventive maintenance of asphalt pavement. Background technique [0002] The ultra-thin overlay is mainly used to restore the anti-skid performance of old road surfaces, and can also be used for new roads, and has the advantages of safe and comfortable driving, low noise level, and saving maintenance and construction costs. At the same time, due to the thin pavement thickness, the improvement of the overall bearing capacity of the road surface is small, and it only plays a functional role. The ultra-thin overlay is suitable for the old road overlay, the functional layer of various new roads, and the surface of low-traffic and low-cost roads. Floor. Novachip hot mix ultra-thin wear layer is a typical representative of ultra-thin overlay technology. This technology was introduced to China in 2003 and is mainly used for preventive main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B26/26C04B111/34
CPCC04B40/0039C04B26/26C04B2111/343C04B2111/0075C04B24/2676C04B24/00C04B24/2611C04B24/26C04B18/141C04B14/06C04B14/02C04B14/14C04B14/045Y02W30/91
Inventor 李廷刚李峰费乐杜滨赵晓涛刘红丹
Owner 北京中天路业科技有限公司
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