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High-performance rubber asphalt and preparation method thereof

A rubber asphalt, high-performance technology, applied in the field of asphalt material composition and its preparation, can solve the problems of poor comprehensive road performance, asphalt mixture elasticity, poor high-temperature rutting resistance, and low rubber powder doping, etc. To achieve the effect of improving comprehensive road performance, better comprehensive physical performance and improving performance

Active Publication Date: 2021-03-09
北京路德永泰环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a high-performance rubber asphalt and its preparation method to solve the problem of the existing rubber asphalt with low doping amount of rubber powder and poor comprehensive road performance, especially the poor elasticity and high-temperature rutting resistance of the asphalt mixture. question

Method used

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  • High-performance rubber asphalt and preparation method thereof
  • High-performance rubber asphalt and preparation method thereof
  • High-performance rubber asphalt and preparation method thereof

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preparation example Construction

[0042] The preparation method of high-performance rubber asphalt of the present invention comprises the following steps:

[0043] Step 1, screen out the rubber powder with suitable particle size, weigh the rubber powder, rubber activator and stabilizer according to the measurement, and put them in the high-speed mixing equipment; start the high-speed mixing equipment, and the rubber powder, rubber activator and stabilizer The stabilizer was thoroughly mixed to obtain Mixture A.

[0044] Step 2: Weigh the asphalt and SBS according to the measurement, put the asphalt into the mixing tank, and heat the asphalt to 210-220°C, then add the weighed SBS and 1 / 2 of the mixture A, and heat it at a temperature of 210-220°C 20-45 min at a stirring rate of 500-800 rpm to form mixture B. The heating temperature and holding temperature here are both 215° C., the stirring rate is 650 rpm, and the stirring time is 30 min.

[0045] Step 3, put the mixture B into the high-speed shear emulsifie...

Embodiment 1

[0050] Embodiment 11 differs from Embodiment 1 only in that, as figure 1 As shown, the high-speed shear emulsifier used includes a tank body 1, a heating channel is arranged on the outer wall of the tank body 1, and a heat source is connected to the heating channel (for example, water, oil, liquid metal, etc. are passed into the heating channel). The top of the tank body 1 is provided with a sealing cover body 2 , the sealing cover body 2 is provided with a material inlet 21 , and the bottom of the tank body 1 is provided with a material outlet port 11 . The material inlet 21 is provided with a sealing plug, and the material outlet 11 is provided with a discharge valve.

[0051] The inner side of the sealing cover 2 is fixed with a motor, the driving shaft 4 of the motor is coaxially fixed with the stirring shaft 3, and the driving gear 31 is coaxially fixed on the stirring shaft 3; the sealing cover 2 is also rotatably connected with the driving shaft 4, and the driving shaft...

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Abstract

The invention belongs to the technical field of asphalt material compositions and preparation methods thereof, and discloses high-performance rubber asphalt and a preparation method thereof, and the high-performance rubber asphalt comprises asphalt, rubber powder, SBS, a rubber activator and a stabilizer. The preparation method comprises the following steps: uniformly mixing the rubber powder, therubber activator and the stabilizer to obtain a mixture A, and stirring 1 / 2 of the mixture A with the asphalt and the SBS while keeping the temperature to obtain a mixture B; grinding the mixture B by using a grinder to obtain a mixture C, adding the rest of the mixture A into the mixture C, and stirring while keeping the temperature to obtain a mixture D; and grinding the mixture D, and stirringwhile keeping the temperature to obtain the finished rubber asphalt. Compared with the existing rubber asphalt, the high-performance rubber asphalt provided by the invention has the advantages that the addition proportion of the rubber powder is high, the comprehensive physical properties of the rubber asphalt are excellent, the elasticity of the asphalt mixture is more sufficient, the high-temperature anti-rutting capability (dynamic stability at 60 DEG C) is strong, and the rutting probability of a pavement is low.

Description

technical field [0001] The invention belongs to the technical field of asphalt material composition and its preparation method, and in particular relates to a high-performance rubber asphalt and its preparation method. Background technique [0002] Rubber asphalt is a combination of rubber powder particles according to a certain ratio of thickness and fineness, and at the same time adding a variety of high polymer modifiers, and fully swells and reacts with the base asphalt under high temperature conditions (above 180°C) that are fully mixed. material formed later. Compared with traditional asphalt materials, rubber asphalt has the advantages of durability, long fatigue life, resistance to fatigue cracks on the road surface, ability to reflect cracks, high temperature resistance to permanent deformation, low temperature crack resistance, and noise reduction. widely used. [0003] The advantages of rubber asphalt are reflected by the proportion of rubber powder mixed. When ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L19/00C08L53/02C08K3/06C08K5/40C08K5/14C08K5/47C08K5/405
CPCC08L95/00C08L2205/03C08L19/003C08L53/02C08K3/06C08K5/40C08K5/14C08K5/47C08K5/405
Inventor 董大伟江宽刘双旺董进学马庆杰颜亮武晋巍
Owner 北京路德永泰环保科技有限公司
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