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Fog seal modified emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and fog seal layer, which can be applied to cohesive pavement paved on site, building components, building insulation materials, etc. Good consolidation performance, short closed traffic time, and good storage stability

Active Publication Date: 2014-05-14
云南交投公路建设第四工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing fog seal materials have problems such as poor stability, poor adhesion to the road surface, poor permeability, slow demulsification speed, poor waterproof effect, and environmental pollution during use.
The Chinese patent with the publication number CN102382478A and the invention name "Star-shaped Modified Emulsified Asphalt for Fog Sealing Layer and Its Preparation Method" adopts a high-molecular-weight star-shaped SBS modifier to prepare modified emulsified asphalt, and its stability is relatively high. poor, easy to delaminate
Chinese patent CN102010605A reports a kind of asphalt emulsion admixture for fog seal layer and its application method. Its asphalt regeneration aid uses any one of coal tar, kerosene, and diesel oil, and a large amount of use pollutes the environment.
The patent publication number is CN102276996A, and the Chinese patent titled "Fog Sealing Layer Material and Its Preparation Method" discloses a method for preparing a mist sealing layer material by mixing and diluting components A and B. In component B, water-based epoxy Resin and curing agent are expensive, the preparation process is complicated, and the price is high. The curing reaction occurs immediately after the water-based epoxy resin and curing agent are mixed, the viscosity increases, and the construction retention time is short, which is not conducive to construction on the site; use kerosene, diesel oil, vegetable oil or One of the oils is a penetration aid, which also has the technical problem of polluting the environment when used in large quantities

Method used

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  • Fog seal modified emulsified asphalt and preparation method thereof
  • Fog seal modified emulsified asphalt and preparation method thereof
  • Fog seal modified emulsified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Taking the preparation of 1 kg of modified emulsified asphalt as an example, the mass ratio of raw materials used is as follows:

[0032]

[0033]

[0034] C in this example 5 Petroleum resin and natural asphalt constitute asphalt modifier, tall oil pitch and furfural extracted oil constitute asphalt rejuvenator, asphalt emulsifier BE-3 and alkylphenol polyoxyethylene ether OP-10 constitute compound emulsifier.

[0035] Its preparation method is as follows:

[0036] 1. Preparation of modified asphalt

[0037] Add 90# base asphalt into the beaker, heat to 130°C, add C 5 Petroleum resin, natural asphalt, tall oil asphalt, and furfural extract oil, stir and mix evenly to obtain modified asphalt, keep warm at 125-160°C for standby.

[0038] 2. Prepare the aqueous solution of compound emulsifier

[0039] Weigh asphalt emulsifier BE-3 and alkylphenol polyoxyethylene ether OP-10, add water and stir until completely dissolved to prepare a compound emulsifier aqueous s...

Embodiment 2

[0043] Taking the preparation of 1 kg of modified emulsified asphalt as an example, the mass ratio of raw materials used is as follows:

[0044]

[0045] C in this example 5Petroleum resin and natural asphalt constitute asphalt modifier, tall oil pitch and furfural extract oil constitute asphalt rejuvenator, asphalt emulsifier BE-3 and alkylphenol polyoxyethylene ether OP--10 constitute compound emulsifier.

[0046] The preparation method is the same as in Example 1, and the modified emulsified asphalt is prepared into a mist seal layer.

Embodiment 3

[0048] Taking the preparation of 1 kg of modified emulsified asphalt as an example, the mass ratio of raw materials used is as follows:

[0049]

[0050] C in this example 5 Petroleum resin and natural asphalt constitute asphalt modifier, tall oil pitch and furfural extracted oil constitute asphalt rejuvenator, asphalt emulsifier BE-3 and alkylphenol polyoxyethylene ether OP-10 constitute compound emulsifier.

[0051] The preparation method is the same as in Example 1, and the modified emulsified asphalt is prepared into a mist seal layer.

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Abstract

The invention relates to fog seal modified emulsified asphalt which comprises the following components by weight: 18-35% of asphalt, 8-18% of an asphalt modifying agent, 5-12% of an asphalt regenerating agent, 1-4% of a compound emulsifying agent and 50% of water. The preparation method comprises the following steps: directly adding the asphalt modifying agent and the asphalt regenerating agent to hot melt asphalt for mixing to prepare modified asphalt; mixing and emulsifying the modified asphalt and an aqueous solution of the compound emulsifying agent through a colloid mill; and mechanically stirring to prepare the fog seal modified emulsified asphalt. The prepared fog seal modified emulsified asphalt has the advantages of good storage stability, good water dilutability, environmental protection in use, good surface consolidation performance after construction, good abrasion resistance, difficult sticking off by wheels, short traffic close time, improvement of construction conditions, improvement of construction efficiency, good water seal function, asphalt pavement water damage prevention, pavement structure protection and extension of pavement service life.

Description

technical field [0001] The invention belongs to the technical field of road materials, and in particular relates to modified emulsified asphalt for the surface layer of asphalt pavement. Background technique [0002] With the rapid development of my country's transportation industry, a network of trunk roads with expressways as the skeleton has basically formed, and the mileage of highways has continued to increase. Asphalt pavement occupies an increasing proportion in the national road network, but due to existing technologies, materials, construction techniques, etc., as well as traffic axle load and natural factors, the performance of asphalt pavement will gradually decrease, and the bearing capacity will decrease. Maintenance is imperative. As a road preventive maintenance technology, the fog seal technology can not only effectively restore the pavement performance within a certain range, but also have a ground effect and save costs. It shows excellent road pre-maintenan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L57/02C08K5/01C08J3/03E01C7/35
Inventor 陈亚芍郭彦强王晓娟
Owner 云南交投公路建设第四工程有限公司
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