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Flexible bituminous mixture, preparation method and application thereof

A technology of asphalt mixture and mixture, applied in the field of rollable asphalt mixture, the preparation field of said rollable asphalt mixture, can solve the problems of little research and difficulty of asphalt pavement, achieve reliable quality assurance and reduce disadvantages Affecting and alleviating traffic congestion

Active Publication Date: 2014-03-26
RES INST OF HIGHWAY MINIST OF TRANSPORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the difficulty of prefabricated on-site installation technology of asphalt pavement, there are few related researches at home and abroad.

Method used

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  • Flexible bituminous mixture, preparation method and application thereof
  • Flexible bituminous mixture, preparation method and application thereof
  • Flexible bituminous mixture, preparation method and application thereof

Examples

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preparation example Construction

[0031] The present application also provides a method for preparing the rollable asphalt mixture according to the present application, the method comprising: mixing the additive with the aggregate; mixing the mixed mixture with petroleum asphalt; and mixing the previous The mixture obtained after the mixing step is mixed with filler to obtain a curly asphalt mixture.

[0032] In this field, mineral materials are divided into aggregates and fillers, which essentially refer to stone materials. Generally speaking, aggregates with a particle size greater than 0.075mm, and fillers with a particle size below 0.075mm. In the preparation method described in this application, the mineral material is divided into aggregate and filler and added separately.

[0033] Wherein, the mixing temperature of the additive and the aggregate is 160-210°C, and the mixing time is 20-120 seconds; the mixing temperature of the mixed mixture and petroleum asphalt is 160-210°C, and the mixing time The mi...

Embodiment 1

[0044] Heat the Zhonghai 70# base petroleum asphalt with a mass ratio of 78% (based on the quality of the prepared modified asphalt) to 160°C, add an additive with a mass ratio of 22% (based on the quality of the prepared modified asphalt), and stir to be added Soluble in petroleum asphalt, cut with a high-speed shearing machine at a speed of 4000r / min for 30 minutes, dissolve evenly, put it in an oven, and develop it at 160°C for 30 minutes to obtain modified asphalt.

Embodiment 2

[0046] Heat the Zhonghai 70# base petroleum asphalt with a mass ratio of 82% (based on the quality of the prepared modified asphalt) to 170°C, add an additive with a mass ratio of 18% (based on the quality of the prepared modified asphalt), and stir to be added Soluble in petroleum asphalt, cut with a high-speed shearing machine at a speed of 5000r / min for 30 minutes, dissolve evenly, put it in an oven, and develop it at 160°C for 30 minutes to obtain modified asphalt.

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Abstract

The invention provides a flexible bituminous mixture, a preparation method and application thereof, belonging to the technical field of road engineering. Based On the total mass of the flexible bituminous mixture, the flexible bituminous mixture comprises the following components by mass percent: 5-15% (preferably 8-10%) of modified asphalt, 85-95% (preferably 90-92%) of mineral aggregate; based on the total mass of the modified asphalt, the modified asphalt comprises the following components by mass percent: 60-95% (preferably 80-92%) of petroleum asphalt, 5-40% (preferably 8-20%) of additive. The bituminous mixture is prefabricated into flexible bituminous pavement in a plant; on a construction site, the flexible bituminous pavement is paved and installed like spreading a carpet, so as to rapidly repair a pavement or pave a bridge deck and reduce adverse influences of the construction on the surrounding environment and residents.

Description

technical field [0001] The application belongs to the technical field of road engineering, and in particular relates to a prefabricated rollable asphalt mixture suitable for bridge deck pavement and road engineering maintenance. [0002] The present application also relates to the preparation method and use of the rollable asphalt mixture. Background technique [0003] In road engineering, more than 95% of asphalt pavement is used, and the service life of asphalt pavement is about 15 years. Due to traffic load and other reasons, it usually needs to be repaired 3 to 5 years after it is opened to traffic. The traditional road maintenance method is "opening the belly" maintenance, which takes a long time and is expensive, which seriously affects road traffic, aggravates road congestion, and affects people's travel and safety. [0004] The factory prefabrication-site installation method is an important development trend of civil structure construction technology. In the field ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
Inventor 曹东伟唐国奇张艳君董元帅唐小亮吴小维
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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