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A separate recycled flexible base material and its preparation method

A flexible base layer and separated technology, which is applied in the field of separated recycled flexible base material and its preparation, can solve problems such as temperature fatigue cracking, impact on road durability, and anti-rutting performance, and improve anti-rutting performance and anti-rutting performance. Crack performance, reduce cracking, and improve durability

Active Publication Date: 2021-06-01
JIANGSU EASTTRANS INTELLIGENT CONTROL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with the semi-rigid water-stabilized macadam base, ATB has lower modulus, and the industry generally has certain concerns about its anti-rutting performance during application. In the past, rutting was only produced on the asphalt layer on the surface, but after using ATB, the asphalt may Generated at the ATB base
Moreover, although compared with cement-stabilized gravel, ATB eliminates the problem of cracks caused by drying shrinkage, but it cannot solve the problem of fatigue cracking caused by temperature and load, which affects the durability of the pavement

Method used

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  • A separate recycled flexible base material and its preparation method
  • A separate recycled flexible base material and its preparation method

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preparation example Construction

[0075] In addition, the present application also provides a method for preparing the above-mentioned separated recycled flexible base material, which may include, for example, the following steps: mixing raw materials according to the ratio.

[0076] Preferably, the gradation of the separated recycled flexible base material satisfies:

[0077] The mass percentage of the separated recycled flexible base material passing through the 31.5mm sieve is 100%;

[0078] Moreover, the mass percentage of the separated recycled flexible base material passing through the 26.5mm sieve is 90-100%;

[0079] And, the mass percentage of the separated regenerated flexible base material passing through the 19mm sieve is 65-85%;

[0080] And, the mass percentage of the separated regenerated flexible base material passing through the 16mm mesh is 55-70%;

[0081] Moreover, the mass percentage of the separated recycled flexible base material passing through the 13.2mm sieve is 48-68%;

[0082] An...

Embodiment 1

[0099] Carry out batching with required gradation by following raw material ratio (weight part):

[0100] first coarse aggregate second coarse aggregate third coarse aggregate fine aggregate 25 30 13 29 mineral powder Base bitumen rock asphalt self-healing microcapsules 3 2.4 5 0.12

[0101] Among them, the coarse aggregate adopts the mobile waste asphalt milling and planing material regeneration equipment produced by Jiangsu Tiannuo Road Material Technology Co., Ltd. The milling and planing material of the asphalt pavement (the lower layer of the asphalt pavement Asphalt mixture, specifically AC-25), is obtained after dry-type oilstone separation and screening, and the asphalt content in the coarse aggregate does not exceed 1wt%.

[0102] The fine aggregate adopts the mobile waste asphalt milling material regeneration equipment produced by Jiangsu Tiannuo Road Material Technology Co., Ltd. to dry the milling material of the asphalt ...

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Abstract

The invention discloses a separated regenerated flexible base material and a preparation method thereof, belonging to the technical field of pavement materials. In parts by weight, the raw materials of the separated regenerated flexible base material include 65-75 parts of coarse aggregate, 25-35 parts of fine aggregate, 3-5 parts of mineral powder, 1.5-2.5 parts of matrix asphalt, 3-5 parts of rock bitumen and self-healing microcapsules at 3‑5% by weight of bitumen. The above-mentioned separated recycled flexible base material can effectively improve the rutting resistance and crack resistance of the flexible base material by using rock asphalt and self-healing microcapsules in the raw materials, reduce cracking during operation, and improve the durability of the road surface. The preparation method can mix the above-mentioned raw materials according to the required gradation, and the method is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of pavement materials, in particular to a separated regenerated flexible base material and a preparation method thereof. Background technique [0002] ATB (asphalt stabilized gravel mixture) is a flexible base material formed by using a certain grade of crushed stone as aggregate and asphalt as a bonding material after high-temperature mixing and compaction. Compared with traditional semi-rigid water-stabilized gravel Base layer, which has better crack resistance and water stability. [0003] Compared with the semi-rigid water-stabilized macadam base, ATB has a lower modulus, and the industry generally has certain concerns about its anti-rutting performance during the application process. In the past, rutting was only produced on the asphalt layer on the surface. After using ATB, the asphalt may Generated at the ATB base layer. Moreover, although compared with cement-stabilized gravel, ATB eliminates the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B20/00C04B111/34
CPCC04B20/0076C04B26/26C04B2111/0075C04B2111/343C04B18/16C04B14/28C04B2103/0069
Inventor 毛益佳张苏龙王鹏李华王捷胡乐乐陈广辉张仁豪
Owner JIANGSU EASTTRANS INTELLIGENT CONTROL TECH GRP CO LTD
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