Preparation method of nano carbon powder, SBS and rubber powder composite modified asphalt

A technology of compound modified asphalt and nano-carbon powder, which is used in building components, building insulation materials, buildings, etc., can solve problems such as hindering the performance of modified materials, reduce temperature sensitivity, avoid different test processes, and improve high temperature resistance. The effect of deformability

Inactive Publication Date: 2020-07-17
ZHENGZHOU UNIVERSITY OF AERONAUTICS +1
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Problems solved by technology

At the same time, in order to avoid the difference in the preparation process parameters and hinder the full performance of the

Method used

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  • Preparation method of nano carbon powder, SBS and rubber powder composite modified asphalt
  • Preparation method of nano carbon powder, SBS and rubber powder composite modified asphalt
  • Preparation method of nano carbon powder, SBS and rubber powder composite modified asphalt

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Embodiment Construction

[0028] The present invention further describes the present invention in conjunction with specific embodiment:

[0029] A preparation method of nano carbon powder, SBS, rubber powder composite modified asphalt, comprising the following steps:

[0030] 1), prepare raw materials according to mass ratio:

[0031] nano carbon powder 1.0％ 1.5％ 2.0％ rubber powder 12％ 15％ 18％ SBS 0.5％ 1.0％ 1.5％

[0032] Table 1: Raw materials

[0033] 2), pass the raw materials in step 1) through the orthogonal test, design 9 sets of test plans, and pass the physical performance test to get the best blending ratio:

[0034]

[0035]

[0036] Table 2: Orthogonal experiment design scheme and influencing factors

[0037] 3), the modified asphalt under the optimal blending ratio in step 2 is taken as the research object, with shear speed, reaction time, reaction temperature, development time, development temperature as independent variable control factors:

[0038...

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Abstract

The invention relates to a preparation method of nano carbon powder, SBS and rubber powder composite modified asphalt. The preparation method comprises the following steps: preparing raw materials such as three groups of nano carbon powder, three groups of rubber powder and three groups of SBS, carrying out surface modification on the nano carbon powder by adopting a titanate coupling agent solution in advance so that an optimal blending ratio is obtained, designing 9 groups of test schemes, carrying out a physical performance test to obtain an optimal blending ratio, giving independent variable factors, taking the modified asphalt at the optimal blending ratio as a research object, and taking a shearing rotation speed, reaction time, a reaction temperature, development time and a development temperature as independent variable control factors, obtaining a test scheme, carrying out an orthogonal test on the parameters, designing 16 groups of test schemes, preparing modified asphalt byutilizing a high-shear emulsifier and a stirrer, carrying out a physical performance test and carrying out grey correlation analysis to obtain a comprehensive score. The preparation method can improvehigh-temperature deformation resistance and the low-temperature crack resistance of the asphalt and reduce the temperature sensitivity.

Description

technical field [0001] The invention relates to the technical field of modified asphalt application, in particular to a method for preparing modified asphalt compounded with nanometer carbon powder, SBS and rubber powder. Background technique [0002] Asphalt pavement has been widely used in the field of road engineering because of its good wear resistance, high flatness, low noise, and easy maintenance. However, ordinary asphalt materials have a high content of light components, a wide distribution of relative molecular weight, and a strong sensitivity to temperature, which determines that it is easy to soften at high temperatures and brittle at low temperatures, resulting in potholes in the service process of the pavement. , oil flooding, tank removal and a series of diseases. [0003] In order to solve this problem and improve the road performance of asphalt mixture, scholars at home and abroad often use the means of adding modifiers to enhance the basic performance of a...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L19/00C08L53/02C08K9/04C08K3/04
CPCC08K2201/011C08L95/00C08L2201/08C08L2205/03C08L19/003C08L53/02C08K9/04C08K3/04
Inventor 李广慧惠涛孟旭张建勋鲍茜袁良东代惠敏李长军李娟赵玉霞辛贝贝
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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