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High-viscosity modified asphalt mixture and application thereof

A technology of modified asphalt and mixture, applied in the field of pavement construction, can solve the problem of not considering the shear resistance of the cover, and achieve the effect of expanding the suitable construction temperature, good fluidity and prolonging the life expectancy.

Active Publication Date: 2020-07-10
广州市北二环交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the Chinese invention patent with the application number 201610207276.6 discloses a super-sticky wear layer for pavement of thin layers and its construction method. The wear layer is composed of alkaline aggregate, modified emulsified asphalt, cement, water and liquid additives , the wear layer is used for preventive maintenance of the overlay, and the shear performance of the overlay has not been considered

Method used

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  • High-viscosity modified asphalt mixture and application thereof
  • High-viscosity modified asphalt mixture and application thereof
  • High-viscosity modified asphalt mixture and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0059] For the high-viscosity modified asphalt mixture of Examples 1-3, the components are as shown in Table 1 in parts by weight:

[0060] Component parts by weight of Table 1 Embodiment 1-3

[0061]

[0062]

[0063] The special gradation of the particle size distribution of the first aggregate, the second aggregate and the third aggregate is shown in Table 2:

[0064] Table 2 Special grading of aggregates

[0065]

[0066] The mass percentage of SBS modifier and tackifier in the high-viscosity and high-elasticity modified emulsified asphalt is shown in Table 3:

[0067] Table 3 Amount of SBS modifier and tackifier (%)

[0068]

[0069] The rest of the features are the same as the specific implementation.

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Abstract

The invention discloses a high-viscosity modified asphalt mixture and application thereof. The high-viscosity modified asphalt mixture comprises the following components in parts by weight: 25-35 parts of a first aggregate; 20 to 30 parts of a second aggregate; 35 to 55 parts of a third aggregate; 0-3 parts of a filler; 9-15 parts of high-viscosity and high-elasticity modified emulsified asphalt;0 to 0.3 part of glass fiber and 0-3 parts of an additive; the application of the high-viscosity modified asphalt mixture is as follows: the high-viscosity modified asphalt mixture is paved and then automatically flows to form a pavement overlay, and the high-viscosity modified asphalt mixture is a thin slurry mixture, is good in fluidity, and can intrude into asphalt pavement cracks, so that asphalt pavement cracks are repaired, and new cracks on an asphalt pavement can be effectively inhibited.

Description

technical field [0001] The invention relates to a high-viscosity modified asphalt mixture and its application, belonging to the technical field of road surface construction. Background technique [0002] The preventive maintenance of asphalt pavement can improve and restore the surface function of the pavement, reduce the number of major and medium repairs in the whole life cycle, and prolong the service life of the pavement. It has been widely used in our country. Conventional preventive maintenance pavement is relatively thin and is not used as a road structure layer. However, it bears the combined effects of tension, compression, shear, torsion and other loads, and requires good bonding and shear performance with the underlying layer. Due to the viscosity of asphalt The overlay is not high, the bonding strength between the overlay and the old pavement is low or the shear strength of the overlay is not high, and it is prone to problems such as falling off, peeling, pushing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B14/04C04B14/14C04B14/42C04B22/06C04B24/12C04B24/24C04B24/26
CPCC04B14/04C04B14/14C04B14/42C04B22/064C04B24/121C04B24/24C04B24/2688C04B26/26C04B2111/00293C04B2111/0075C04B2201/50
Inventor 何培勇龙翔徐伟龙李俊许志东陈登行
Owner 广州市北二环交通科技有限公司
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