Ultrathin asphalt mixed material and preparation method thereof

A technology of asphalt mixture and mixture, which is applied in the field of asphalt mixture, can solve the problems of overlaying too thick asphalt mixture, improve driving comfort and safety, reduce road noise, and improve high temperature stability Effect

Inactive Publication Date: 2019-12-20
上海同沥新材料科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide an ultra-thin asphalt mixture, which can solve the problem that the old cement pavement, bridge and tunnel pavement is changed from white to black, and it is not suitable for overlaying too thick asphalt mixture. Asphalt mixture has good high temperature stability, good low temperature crack resistance, excellent fatigue resistance and outstanding skid resistance

Method used

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  • Ultrathin asphalt mixed material and preparation method thereof
  • Ultrathin asphalt mixed material and preparation method thereof
  • Ultrathin asphalt mixed material and preparation method thereof

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Embodiment Construction

[0021] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples. For the experimental methods that do not indicate specific conditions in the following examples, select according to conventional methods and conditions, or according to the following technical performance indicators.

[0022] An ultra-thin asphalt mixture, the mixture formula includes the following components in parts by mass: 10-50 parts of aggregate 5-10mm, 20-50 parts of aggregate 3-5mm, 15-35 parts of aggregate 0-3mm 4-10 parts of mineral powder, 5-8 parts of modified asphalt, 0.2-0.5 parts of special additive for ultra-thin asphalt mixture and 0.2-0.4 parts of polyester fiber.

[0023] The 5-10mm aggregate and the 3-5mm aggregate use basalt or diabase, and steel slag can also be used, which must meet the following technical requirements:

[0024] Coarse aggregate (5-10mm, 3-5mm) technical performance indicators

[0025] ...

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Abstract

The invention provides an ultrathin asphalt mixed material and a preparation method thereof. The ultrathin asphalt mixed material comprises the following components: 10-50 parts of an aggregate of 5-10mm, 20-50 parts of an aggregate of 3-5mm, 15-35 parts of an aggregate of 0-3mm, 4-10 parts of mineral powder, 5-8 parts of modified asphalt, 0.2-0.5 part of a special ultrathin asphalt mixed materialadditive and 0.2-0.4 part of polyester fiber. Compared with common SMA (stone mastic asphalt) and AC (asphalt concrete) asphalt mixed materials, the ultrathin asphalt mixed material has good high temperature stability and low temperature cracking resistance, excellent fatigue damage resistance and outstanding anti-sliding performance.

Description

technical field [0001] The invention relates to the technical field of asphalt mixture, in particular to an ultra-thin asphalt mixture and a preparation method thereof. Background technique [0002] At present, many municipal roads, rural roads, some expressways, bridges, and tunnels in China are paved with cement pavement. After a certain number of years, their driving comfort and anti-skid performance will be greatly reduced, seriously affecting driving safety. At the same time, a large number of plate transverse joints in the process of driving on the cement road will cause serious vehicle jumping and strong noise, which is a kind of pollution to the surrounding residents. If the above-mentioned cement pavement is maintained by the traditional method of adding a cover, one method is to dig the cement pavement to rebuild the road; the other cement pavement is overlaid with asphalt, with a thickness of more than 10cm. Among them, the digging and reconstruction period is lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B14/14C04B14/04C04B18/142C04B14/28C04B24/2611C04B16/0683C04B20/0076
Inventor 朱天同赵国华曹祖光叶奋
Owner 上海同沥新材料科技有限公司
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