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Preparation method of paving asphalt modified at normal temperature

A road asphalt and modification technology, which is applied to building insulation materials, building components, buildings, etc., can solve problems such as high production costs, high energy consumption, and health effects, and achieve shortened production cycles, energy savings, and protection environmental effects

Active Publication Date: 2011-09-21
SICHUAN GUOXING POLYMER RESIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large amount of base asphalt, the heating time is long, and the energy consumption is large, so that the production cost remains high
Usually the factory uses coal to heat the product. During the heating process, smoke and dust will be generated, which seriously affects the environment.
Workers are exposed to high-temperature working environment for a long time, and their health is greatly affected

Method used

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  • Preparation method of paving asphalt modified at normal temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Put 150 kg of pine tar, 30 kg of heat stabilizer, and 2,700 kg of waste rubber powder into the horizontal rotary cracker, and stop heating after raising the temperature to 345°C; after the temperature in the horizontal rotary cracker drops to 320°C, keep the temperature constant for 2 hours , and then cooled naturally, and the evaporated gas is passed into the decompression bag for decompression separation, wherein the gas part enters the condensing system upwards to obtain condensate, and the water and polymer in the condensate are separated, and the obtained high The polymer is used as a diluent; add 3% of its own weight of dispersant W33 and 1.5% of accelerator CBS to the heavy component obtained by decompression separation, and stir evenly to obtain a polymer resin modifier.

[0028] Put 24,000 kg of 130-150°C base asphalt into the esterification reactor, then add 120 kg of polymer resin modifier and 1,320 kg of No. 10 asphalt, and stir for 30 minutes. When the temp...

Embodiment 2

[0030] Put 210 kg of pine tar, 60 kg of heat stabilizer, and 3,000 kg of waste rubber powder into the horizontal rotary cracker, and stop heating after raising the temperature to 355°C; after the temperature in the horizontal rotary cracker drops to 320°C, keep the temperature constant for 2 hours , and then cooled naturally, and the evaporated gas is passed into the decompression bag for decompression separation, wherein the gas part enters the condensing system upwards to obtain condensate, and the water and polymer in the condensate are separated, and the obtained high The polymer is used as a diluent; add 3% of its own weight of dispersant W33 and 1.5% of accelerator CBS to the heavy component obtained by decompression separation, and stir evenly to obtain a polymer resin modifier.

[0031] Put 10,000 kg of base asphalt at 130-150°C into the esterification reaction kettle, then add 50 kg of polymer resin modifier and 550 kg of No. 10 asphalt, and stir for 30 minutes. When ...

Embodiment 3

[0033] Put 180 kg of pine tar, 45 kg of heat stabilizer, and 2,760 kg of waste rubber powder into the horizontal rotary cracker, and stop heating after raising the temperature to 365°C; after the temperature in the horizontal rotary cracker drops to 320°C, keep the temperature constant for 2 hours , and then cooled naturally, and the evaporated gas is passed into the decompression bag for decompression separation, wherein the gas part enters the condensing system upwards to obtain condensate, and the water and polymer in the condensate are separated, and the obtained high The polymer is used as a diluent; add 3% of its own weight of dispersant W33 and 1.5% of accelerator CBS to the heavy component obtained by decompression separation, and stir evenly to obtain a polymer resin modifier.

[0034] Put 10,000 kg of base asphalt at 130-150°C into the esterification reaction kettle, then add 50 kg of polymer resin modifier and 550 kg of No. 10 asphalt, and stir for 30 minutes. When ...

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Abstract

The invention provides a preparation method of paving asphalt modified at a normal temperature. The invention belongs to the preparation field of pavement materials and comprises the following steps of cracking, low pressure separation, diluent preparation, high-molecular resin modifier preparation, modification and blending. The preparation method adopts improved technical processes, thus a process of heating matrix asphalt is avoided and purposes of short production period, low production cost and environmental protection are realized.

Description

technical field [0001] The invention relates to the field of preparation of road pavement materials, in particular to a preparation method of normal temperature modified road asphalt. technical background [0002] Due to its excellent adhesion and thermoplasticity, asphalt has been widely used in pavement structures as an excellent paving material. In recent years, with the continuous optimization of asphalt production process, the quality of road asphalt has been greatly improved. In my country, about 90% of highways use asphalt pavement. [0003] Chinese patent CN02113887.7 discloses a method for preparing heat-resistant modified road asphalt, which includes the following steps: (a) preparing a degradable polymer resin modifier; (b) preparing matrix asphalt; (c) blending and modifying, Put 80%-95% of the prepared base asphalt into the esterification tank according to the weight ratio, raise the temperature to 180°C, add 5%-20% of the prepared degradation polymer resin mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/00
Inventor 王洪杨思长
Owner SICHUAN GUOXING POLYMER RESIN CO LTD
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