Preparation of rubber asphalt mixture

A rubber asphalt and mixture technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as insufficient adhesion performance, poor high temperature performance, and reduced high temperature performance, and achieve improved adhesion and high temperature performance
CN101462849BInactive Publication Date: 2011-09-14TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2011-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a rubber asphalt mixture. The method comprises the following steps: adding tyre rubber powder into the road petroleum asphalt, and carrying out the stirring and reaction for 45 to 120 minutes to prepare the rubber asphalt; and adding N,N'-ethidence dioleamide into the heated stone material in the mineral aggregate, stirring the mineral aggregate evenly, then adding the rubber asphalt into the mineral aggregate, and stirring the mixture evenly to obtain the composite modified rubber asphalt mixture finished product. The obtained rubber asphalt mixture can simultaneously improve the high temperature performance and bonding performance of the rubber asphalt mixture.
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Description

technical field

[0001] The invention relates to a method for preparing rubber asphalt mixture. Background technique

[0002] Rubber asphalt refers to the modified asphalt cementing material obtained by the reaction of tire rubber powder with a content of more than 15% under high temperature and sufficient mixing conditions and the swelling reaction of asphalt. Due to the use of recycled tires as the main material for modification, it has a cost advantage compared to styrene-butadiene block copolymer (SBS) modified asphalt, but rubber asphalt with pure tire rubber formula has poor performance in terms of high temperature stability and adhesion. , There are still deficiencies in the construction performance.

[0003] In order to improve the overall performance of rubber asphalt, other modifiers can be added to rubber asphalt for modification. The existing technology of applying rubber powder to asphalt pavement is mainly divided into two categories: wet method and dry method...

Claims

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