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Modified emulsified bitumen for tie coat

A technology for emulsified asphalt and adhesive layer, which is used in road engineering modified emulsified asphalt and its processing and application fields, can solve problems such as insufficient viscosity and low solid content, and achieve the effects of improving waterproof performance and prolonging service life.

Inactive Publication Date: 2009-04-01
XIAMEN HUATE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the current situation of insufficient viscosity of the modified emulsified asphalt used as the adhesive layer, the present invention has developed a modified emulsified asphalt for the adhesive layer. The solid content, softening point and dynamic viscosity are significantly better than the current technical requirements of modified emulsified asphalt, and overcome the problems of low solid content and insufficient viscosity of common emulsified asphalt or modified emulsified asphalt currently used as sticky layer materials

Method used

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  • Modified emulsified bitumen for tie coat
  • Modified emulsified bitumen for tie coat
  • Modified emulsified bitumen for tie coat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Get 670g CNPC 70# common asphalt, 40g cationic styrene-butadiene polymer latex modifier (PC-1468), 3.5g fast-cracking emulsifier (INDULIN DF-42E) and 286.5g water for subsequent use.

[0018] Prepare the quick-cracking emulsifier (INDULIN DF-42E) and water according to the above proportions to make a soap solution, add the modifier cationic styrene-butadiene polymer latex (PC-1468) to the soap solution, and use 36% concentrated hydrochloric acid to dissolve the soap solution Adjust the pH value to 2.0, heat the soap solution to 58°C, and then circulate the colloid mill at a speed of 5000rpm at high speed to disperse the particles in the soap solution evenly, then slowly add PetroChina that has been heated to 132°C to the running colloid mill 70# asphalt, and then recirculate until the emulsion is evenly dispersed, and the obtained emulsion is the modified emulsified asphalt for the adhesive layer.

[0019] The technical indicators of the modified emulsified asphalt, esp...

Embodiment 2

[0023] Get 680g Korean SK70# common asphalt, 40g cationic styrene-butadiene polymer latex modifier (PC-1468), 4.5g fast-cracking emulsifier (INDULIN DF-42E) and 275.5g water for subsequent use.

[0024] Prepare quick-cracking emulsifier (INDULIN DF-42E) and water according to the above ratio to make soap liquid, add modifier cationic styrene-butadiene polymer latex latex (PC-1468) to soap liquid, and use 38% concentrated hydrochloric acid to dissolve the soap liquid Adjust the pH value of the liquid to 3.0, heat the soap to 55°C, and pass through a colloid mill with a speed of 4000rpm to circulate at a high speed to disperse the particles in the soap liquid evenly, then slowly add soap that has been heated to 130°C to the running colloid mill Korean SK70# asphalt, and then recirculate until the emulsion is evenly dispersed, and the obtained emulsion is the modified emulsified asphalt for the adhesive layer.

[0025] The technical indicators of the modified emulsified asphalt, ...

Embodiment 3

[0029] Get 650g of Singapore ESSO 70# common asphalt, 30g of cationic styrene-butadiene polymer latex modifier (PC-1468), 2.5g of fast-cracking emulsifier (INDULIN DF-42E) and 317.5g of water for subsequent use.

[0030] Prepare the quick-cracking emulsifier (INDULIN DF-42E) and water according to the above proportions to make a soap solution, add the modifier cationic styrene-butadiene polymer latex (PC-1468) to the soap solution, and use 36% concentrated hydrochloric acid to dissolve the soap solution Adjust the pH value to 2.0, heat the soap to 60°C, and then circulate the colloid mill at a speed of 6000rpm at high speed to disperse the particles in the soap liquid evenly, then slowly add Singaporean soap heated to 145°C to the running colloid mill. ESSO70# asphalt, and then recirculate until the emulsion is uniformly dispersed, and the obtained emulsion is the modified emulsified asphalt for the adhesive layer.

[0031] The technical indicators of the modified emulsified a...

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Abstract

The invention discloses modified emulsified asphalt for bonding layers, which comprises 65.0-68.0 wt% of asphalt, 3.0-4.0 wt% of modifier, 0.25-0.45 wt% of cation fast crack-typed emulsifier and 27.55-31.75 wt% of water. The solid content of the modified emulsified asphalt for bonding layers is more than 67%, a thicker asphalt film is produced after emulsion breaking, and excellent bonding performance and waterproof performance are provided, and the dynamic viscosity of evaporated residue at 60 DEG C is more than or equal to 1800Pa.s.

Description

technical field [0001] The invention belongs to the technical field of road engineering modified emulsified asphalt and its processing and application, and in particular relates to a modified emulsified asphalt used for road surface bonding layer. Background technique [0002] Ordinary emulsified asphalt or modified emulsified asphalt used as a sticky layer for bridge deck pavement, new asphalt layer or old asphalt pavement, and cement concrete pavement has not received enough attention in technology, and there is also the problem of insufficient viscosity after demulsification. At present, when the overlay is overlaid, due to the driving load and the natural environment, due to insufficient adhesion between the overlay and the bridge deck or road surface, it is easy to cause interlayer transfer, which greatly affects the performance. At the same time, the modified emulsified asphalt used as an ultra-thin overlay adhesive layer generally has a low viscosity, and only a thin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
Inventor 邱建林蔡智慧
Owner XIAMEN HUATE GROUP
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