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Preparation method of high-strength composite modified emulsified asphalt

A composite modified asphalt and composite modification technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of accelerating the demulsification speed of emulsified asphalt, insufficient shearing and durability, and enhancing emulsified asphalt. Restore the effect of enhancing original properties, reducing looseness and improving adhesion

Pending Publication Date: 2021-02-19
HEBEI LUNTE PETROLEUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the above-mentioned technical problems, the present invention is to provide a product with good stability and high bonding strength, which can reduce the problems of sticking wheels during construction, weak bonding between layers, long maintenance time, insufficient shearing property and durability, etc. , and the process is simple, can effectively reduce production costs, enhance the viscosity and bonding performance of emulsified asphalt, and speed up the preparation method of high-strength composite modified emulsified asphalt

Method used

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  • Preparation method of high-strength composite modified emulsified asphalt
  • Preparation method of high-strength composite modified emulsified asphalt
  • Preparation method of high-strength composite modified emulsified asphalt

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Effect test

Embodiment 1

[0037] A preparation method of high-strength composite modified emulsified asphalt, the addition of the following substances is based on the quality of SBS modified asphalt:

[0038] S1. Heat and stir the SBS modified asphalt that meets the requirements of the specification to 175°C, and add 3% of the mass of SBS modified asphalt (to ensure that the viscosity index meets the requirements) rosin resin, 1.5% polystyrene butadiene Diene copolymer SBR modifier, using a high-speed shearing machine to shear for 120 minutes to obtain high-strength SBS modified asphalt, the shear speed was 700r / min during preparation, and the high-strength SBS modified asphalt was cooled to 150°C in air;

[0039] S2. Taking the high-strength SBS modified asphalt as the standard, add rubber oil accounting for 2% of the high-strength SBS modified asphalt to the high-strength composite modified asphalt, and add 0.4% of the high-strength SBS modified asphalt. Oil-soluble liquid warm mix Regenerant, the te...

Embodiment 2

[0044] A preparation method of high-strength composite modified emulsified asphalt, the addition of the following substances is based on the quality of SBS modified asphalt:

[0045] S1. Heat the SBS modified asphalt that meets the requirements of the specification to 180°C, and add 2.5% of the mass of SBS modified asphalt (to ensure that the viscosity index meets the requirements) mixture of rosin resin and coomaron resin, more than 2%. Chain polyolefin modifier, using a high-speed shearing machine to shear for 110 minutes to obtain high-strength SBS modified asphalt, the shear speed is 800r / min, and cool the high-strength SBS modified asphalt to 150°C in the air;

[0046] S2. Taking the high-strength SBS modified asphalt as the standard, add rubber oil accounting for 3% of the high-strength SBS modified asphalt to the high-strength composite modified asphalt, and add 0.5% of the high-strength SBS modified asphalt. Oil-soluble liquid warm mix Regenerant, the temperature is ke...

Embodiment 3

[0051] A preparation method of high-strength composite modified emulsified asphalt, the addition of the following substances is based on the quality of SBS modified asphalt:

[0052] S1. Heat the SBS modified asphalt that meets the requirements of the specification to 185°C, and add 3% of the mass of SBS modified asphalt (to ensure that the viscosity index meets the requirements) of terpene resin, and 2% of multi-chain polyolefin modified The high-strength SBS modified asphalt was obtained by using a high-speed shearing machine for 120 minutes, and the shear speed was 750r / min, and the high-strength SBS modified asphalt was cooled to 145°C in the air;

[0053] S2. Taking the high-strength SBS modified asphalt as the standard, add rubber oil accounting for 2.5% of the mass of high-strength SBS modified asphalt to the high-strength composite modified asphalt, and add oil-soluble liquid warm mix accounting for 0.4% of the mass of high-strength SBS modified asphalt Rejuvenator, th...

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Abstract

The invention relates to the technical field of road asphalt materials, in particular to a preparation method of high-strength composite modified emulsified asphalt. The asphalt has the advantages that the stability is better, the bonding strength is high, and the problems of wheel sticking, infirm inter-layer bonding, long maintenance time, insufficient shearing property and durability and the like in the construction process are reduced. The process is simple, the production cost can be effectively reduced, the viscosity and bonding performance of the emulsified asphalt are enhanced, and thedemulsification speed of the emulsified asphalt is increased; the composite modified emulsified asphalt is composed of high-strength composite modified asphalt and an emulsifier aqueous solution, theoil-water mass ratio of a mixture of the high-strength composite modified asphalt and the emulsifier aqueous solution is 60: 40-65: 35, that is, the content of evaporation residues of the high-strength composite modified emulsified asphalt is 60%-65%, and the preparation method comprises the following steps: S1, carrying out asphalt heating treatment; S2, preparing high-strength SBS modified asphalt; S3, preparing high-strength composite modified asphalt; S4, preparing an emulsifier aqueous solution; and S5, preparing the high-strength composite modified emulsified asphalt.

Description

technical field [0001] The invention relates to the technical field of road asphalt materials, in particular to a preparation method of high-strength composite modified emulsified asphalt. Background technique [0002] At present, the commonly used pavement preventive maintenance materials at home and abroad are mainly coatings, coils, chemicals, asphalt-based fibers, modified emulsified asphalt and other types. [0003] Coating materials can be divided into asphalt, polymer-modified asphalt and synthetic polymer according to the main components of the film-forming material, but there are shortcomings such as insufficient bonding strength under high temperature conditions, and weak resistance to construction damage. . [0004] Coil preventive maintenance materials are mainly made of synthetic rubber, synthetic resin or plastic and rubber blended materials, mixed with appropriate amount of chemical additives and fillers such as stabilizers, accelerators, vulcanizing agents a...

Claims

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Application Information

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IPC IPC(8): C08J3/03C08L95/00C08L53/02C08L93/04C08L9/06C08L91/00C08L45/02C08L23/02C08L45/00C08L57/02
CPCC08J3/03C08J2395/00C08J2453/02C08J2493/04C08J2409/06C08J2491/00C08J2445/02C08J2423/02C08J2445/00C08J2457/02
Inventor 耿磊柳宁
Owner HEBEI LUNTE PETROLEUM CHEM
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