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High visco-elastic warming mixing modifying agent for asphalt road and production method and application of high visco-elastic warming mixing modifying agent

An elastic modifier, asphalt pavement technology, applied in the direction of climate change adaptation, etc., to achieve the effects of improving performance characteristics, saving fuel, and extending service life

Inactive Publication Date: 2015-12-02
许政道
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hardly any modifier has both elasticity and viscosity

Method used

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  • High visco-elastic warming mixing modifying agent for asphalt road and production method and application of high visco-elastic warming mixing modifying agent
  • High visco-elastic warming mixing modifying agent for asphalt road and production method and application of high visco-elastic warming mixing modifying agent
  • High visco-elastic warming mixing modifying agent for asphalt road and production method and application of high visco-elastic warming mixing modifying agent

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Embodiment 1

[0054] In the examples of the present invention, Table 1 lists the components of the high viscoelasticity warm-mixing modifier used in the practice group (1, 2, 3) and the control group (1, 2, 3). Each of the modifiers shown in Table 1 and a known amount of asphalt binder were thoroughly mixed at 180 °C for 2 hours to produce a homogeneous modified asphalt binder. Penetration tests were performed on these modified asphalt binders at 25°C, and the results are shown in Table 1. In order to measure the physical properties of the high-viscoelastic warm-mix modified asphalt concrete mixture, 955 kg of 10 mm dense aggregate (RAP recycled material with a mass percentage of 30 mass percentage + 70 mass percentage of new material), 35 kg of asphalt binder (AC-20), 4 kg of filler (lime powder) and 6 kg of modifier in the practice group and the control group. Put each concrete mixture into a Marshall mold, hit 75 strokes on each side of the mold, and fully compact it to make a modified ...

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Abstract

The invention discloses a high visco-elastic warming mixing modifying agent for an asphalt road and a production method and application of the high visco-elastic warming mixing modifying agent. The high visco-elastic warming mixing modifying agent comprises a high visco-elastic modifying agent, a warm mixing additive component and a reactant. The high visco-elastic modifying agent comprises, by mass, 10-90% of mixed-viscosity polymer and 10-90% of high elastomeric polymer, and the mixed-viscosity polymers comprise at least one high-viscosity polymer and at least one medium-viscosity polymer. The warm mixing additive component comprises a mixture formed by at least two warm mixing additives. The high visco-elastic warming mixing modifying agent can be used for preparing a warm mixing asphalt concrete mixture and can be used for producing all modified asphalt concrete mixtures under the warm mixing temperature, and the modified asphalt road high in durability can be conveniently paved. The high visco-elastic warming mixing modifying agent has the advantages that air pollution is reduced, fuel is saved, material oxidizing and aging are reduced, and the opening time frame of the road is shortened; the high visco-elastic warming mixing modifying agent can further improve the road performance feature, and the service life of the road is prolonged.

Description

technical field [0001] The invention relates to the field of pavement materials, in particular to a high-viscoelastic warm-mix modifier for asphalt pavement and its production method and application. Background technique [0002] Roads are the infrastructure of society, linking most people and goods in their journeys. More than 80% of the world's roads use asphalt pavement, and the asphalt pavement structural layer can absorb most of the stress generated by heavy traffic. Heavy traffic, impact forces and construction irregularities can shorten the life of a pavement. The country spends billions each year to repair or maintain damaged pavements, and extending the life of asphalt pavements can significantly reduce construction budgets. Asphalt pavement is mainly paved asphalt concrete (mixed by asphalt binder, aggregate and filler at high temperature) on the roadbed in the order of base layer, middle layer and surface layer, and each layer is compacted by a road roller unti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B24/26C04B24/24C04B26/26
CPCY02A30/30
Inventor 许政道
Owner 许政道
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