Storable rubber powder modified asphalt and preparation method thereof

A modified asphalt, storage-resistant technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of rubber asphalt failing to meet design requirements, rubber asphalt cannot be stored overnight, and mixture design failures, etc., and achieve low prices. , Reduce product cost, good performance attenuation and low temperature crack resistance
CN101775224AInactive Publication Date: 2010-07-14SHENYANG SANXIN GROUP PANJIN ROAD MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENYANG SANXIN GROUP PANJIN ROAD MATERIALS
Publication Date
2010-07-14
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to storable rubber powder modified asphalt which is characterized by comprising asphalt, rubber powder, an activating agent and an anti-reversion agent, wherein the asphalt is heavy road petroleum asphalt, the penetration degree is 50-110, the rubber powder is the rubber powder prepared by grinding a waste tyre by adopting a normal temperature method, the weight ratio of the asphalt and the rubber powder is 70-85:15-25, the rubber powder contains a cross linker accounting for 0.1-0.5wt% of the rubber powder, and the technical indexes of the rubber powder are as follows: the water content is smaller than 5 percent, the metal content is smaller than 0.4 percent, the ash content is smaller than 8 percent, and the size is 20-80 meshes. The activating agent is an alkyl phenol polysulfide and accounts for 0.1-1wt% of the rubber powder, and the anti-reversion agent is a bimaleimide or silane tetrasulfide compound and accounts for 0.1-0.5wt% of the rubber powder. The product has the characteristic of softening-point attenuation resistance when in high temperature storage, is widely applied to an asphalt mixture and has the characteristics of factory continuous and stable environment-friendly production, low oil usage quantity and the like.
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Description

technical field

[0001] The invention relates to a road construction material, and in particular provides a storage-resistant rubber powder modified asphalt and a preparation method thereof. Background technique

[0002] As a continuous pavement, asphalt pavement has the characteristics of comfortable driving and easy maintenance, and has become the main form of pavement. However, asphalt pavement has insufficient high temperature stability, low temperature crack resistance, and water damage resistance, which easily cause rutting, cracks, and potholes. In order to reduce the premature appearance of diseases, modified asphalt materials are mostly used now. At present, SBS modified asphalt is widely used as the modified asphalt material, but this kind of asphalt modifier has the problem of high price, and the modification process is relatively complicated. The addition of waste rubber powder can make the asphalt achieve the effect of modification, and its performance index ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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