Organic composite warm asphalt mixture and preparation method thereof

A warm-mix asphalt and mixture technology, applied in the field of road engineering asphalt, can solve the problems of high-temperature performance and water stability reduction, unfavorable road performance of asphalt mixture, cumbersome preparation process, etc., to reduce the temperature of mixing and compaction , low cost and simple preparation process

Active Publication Date: 2015-07-08
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing warm mix asphalt mixture technology, the existing conventional warm mix asphalt mixture has problems such as complex components, cumbersome preparation process and high cost due to the fact that most mature technologies are imported products
At the same time, although the existing warm mix asphalt mixture technology reduces the mixing temperature of asphalt, at the same time other technical indicators of asphalt mixture such as high temperature performance and water stability may also be relatively reduced. performance can be adversely affected

Method used

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  • Organic composite warm asphalt mixture and preparation method thereof

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preparation example Construction

[0020] The present invention also provides a preparation method for the above-mentioned organic composite warm-mix asphalt mixture, comprising the steps of:

[0021] (1) Put the aggregate heated to 135-145°C into the mixing tank in proportion;

[0022] (2) Add petroleum asphalt heated to 140-150°C into the mixing tank in proportion, and at the same time, spread the organic composite warm mix agent on the surface of petroleum asphalt for mechanical mixing, and the mixing time is 50-60s; among them, petroleum asphalt The mixing temperature with the aggregate is controlled at 130-140°C;

[0023] (3) Add mineral powder and inorganic fillers in proportion to the mixing tank for mechanical mixing, and the mixing time is 50-60s;

[0024] (4) Take the mixture obtained in step (3) out of the cylinder, and control the temperature at 125-135°C to obtain the organic composite warm asphalt mixture;

[0025] (5) The organic composite warm-mix asphalt mixture obtained in step (4) is compac...

Embodiment 1

[0032] (1) Heat 10058g of aggregate to 145°C and put it into the mixing tank in proportion;

[0033] (2) Heat 477g of petroleum asphalt to 150°C and add it into the above mixing tank in proportion, and at the same time, spread 15g of organic composite warm mix agent (stearic acid amide: oleic acid amide = 4:1) on the surface of the above petroleum asphalt Carry out mechanical mixing, the mixing time is 50s, and the mixing temperature is controlled at 140°C;

[0034] (3) Add 155g of mineral powder and 155g of slaked lime in proportion to the above mixing tank for mechanical mixing, and the mixing time is 50s;

[0035] (4) Take the mixture obtained in step (3) out of the cylinder, and control the temperature at 135°C to obtain an organic composite warm asphalt mixture;

[0036] (5) Compact the organic composite warm-mix asphalt mixture obtained in step (4), and control the compaction temperature at 130°C.

[0037] The specific technical indicators of the obtained organic compo...

Embodiment 2

[0039] (1) Heat 10065g of aggregate to 145°C and put it into the mixing tank in proportion;

[0040] (2) Heat 478g of petroleum asphalt to 140°C and add it into the above mixing tank in proportion, and at the same time spread 20g of organic composite warm mix agent (ethylene bis stearamide: ethylene bis oleic acid amide = 3:2) Sprinkle the surface of the above-mentioned petroleum asphalt for mechanical mixing, the mixing time is 50s, and the mixing temperature is controlled at 135°C;

[0041] (3) Add 158g of mineral powder and 158g of slaked lime in proportion to the above mixing tank for mechanical mixing, and the mixing time is 60s;

[0042] (4) Take the mixture obtained in step (3) out of the tank, and control the temperature at 130°C to obtain an organic composite warm asphalt mixture;

[0043] (5) Compact the organic composite warm-mix asphalt mixture obtained in step (4), and control the compaction temperature at 125°C.

[0044] The specific technical indicators of the...

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Abstract

The invention discloses an organic composite warm asphalt mixture. The mixture is prepared from 4-6wt% of asphalt, 90-92wt% of aggregate, 1-2wt% of ore powder, 1-2wt% of an inorganic filler and 0.1-0.2wt% of an organic composite warm mixing agent, wherein the organic composite warm mixing agent comprises one or more of ethylene bisstearamide, octadecanamide, oleamide and ethylene bisoleamide. The organic composite warm asphalt mixture substantially reduces the mixing and compacting temperature of the warm asphalt mixture, greatly saves energy, reduces the discharge of waste gas, effectively guarantees that the high temperature, the water stability and other pavement performance indexes of the warm asphalt mixture approach or are better than those of routine asphalt mixtures, and meets practical engineering standard requirements. The organic composite warm asphalt mixture disclosed in the invention has the characteristics of few components, simple preparation technology and low cost. The invention also provides a preparation method of the organic composite warm asphalt mixture.

Description

technical field [0001] The invention relates to the technical field of road engineering asphalt, in particular to an organic composite warm asphalt mixture and a preparation method thereof. Background technique [0002] At present, warm mix asphalt mixture is more and more widely used in road construction. Warm-mix asphalt mixture is an energy-saving and environment-friendly asphalt mixture whose mixing temperature is between hot-mix asphalt mixture (160-180°C) and cold-mix asphalt mixture (10-40°C), and its performance is close to that of hot-mix asphalt mixture. material. Compared with traditional hot mix asphalt mixture, warm mix asphalt mixture has relatively low mixing and compaction temperature, relatively small energy consumption and exhaust emission, and has better road performance. It is a new type of energy-saving Environmentally friendly road materials have very broad application prospects. [0003] In the existing warm mix asphalt mixture technology, the exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/10C04B24/12
CPCY02A30/30
Inventor 赵普赵欣平何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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