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Modified emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and modified asphalt, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of poor compatibility and stability of stone materials, and can not be well applied, so as to improve construction conditions, easy to operate, and not easy to use. cracking effect

Active Publication Date: 2014-09-17
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two kinds of SBS modified emulsified asphalt are not well suitable for cold mix and cold pavement asphalt mixture construction, and their compatibility and stability with stone materials are also poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A modified emulsified asphalt, comprising the following raw materials in parts by weight: 58 parts of SBS modified asphalt, 1.2 parts of pentamethylalkyl trimethylene diquaternary ammonium emulsifier, 0.5 part of polyethylene glycol emulsifier, alkane 0.9 parts of phenol-polyoxyethylene alkane emulsifier, 0.06 parts of rheology modifier, 0.02 parts of plasticizer, and 38 parts of water.

[0038] In the present embodiment, the preparation method of described SBS modified asphalt is:

[0039] (1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 177°C and grind it with a colloid mill, and then add rubber softening oil; the SBS modifier accounts for the SBS modified The mass percentage of asphalt is 4%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 4%;

[0040] (2) Control the temperature at 182°C and stir for 2 hours, lower the temperature to 172°C...

Embodiment 2

[0056] A modified emulsified asphalt, consisting of the following raw materials in parts by weight: 56 parts of SBS modified asphalt, 1.4 parts of pentamethylalkyl trimethylene diquaternary ammonium emulsifier, 0.4 part of polyethylene glycol emulsifier, 1 part of alkylphenol polyoxyethylene emulsifier, 0.07 part of rheology modifier, 0.03 part of plasticizer, 36 parts of water.

[0057] In the present embodiment, the preparation method of described SBS modified asphalt is:

[0058] (1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 176°C and grind it with a colloid mill, and then add rubber softening oil; the SBS modifier accounts for the SBS modified The mass percentage of asphalt is 3%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 2%;

[0059] (2) Control the temperature at 184°C and stir for 2 hours, then lower the temperature to 174°C, add ZY...

Embodiment 3

[0075] A modified emulsified asphalt, comprising the following raw materials in parts by weight: 55 parts of SBS modified asphalt, 1 part of pentamethylalkyl trimethylene diquaternary ammonium emulsifier, 0.6 part of polyethylene glycol emulsifier, alkane 0.8 parts of phenol-polyoxyethylene alkane emulsifier, 0.05 parts of rheology modifier, 0.01 part of plasticizer, and 35 parts of water.

[0076] In the present embodiment, the preparation method of described SBS modified asphalt is:

[0077] (1) After heating the base asphalt AH70, gradually add the high molecular polymer linear SBS modifier, control the temperature at 178°C and grind it with a colloid mill, and then add rubber softening oil; the SBS modifier accounts for the SBS modified The mass percentage of asphalt is 2%, and the mass percentage that described rubber softening oil accounts for SBS modified asphalt is 5%;

[0078] (2) Control the temperature at 180°C and stir for 2 hours, then lower the temperature to 17...

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Abstract

The invention belongs to the technical field of petroleum asphalt and processing preparation thereof and particularly relates to modified emulsified asphalt applicable to a cold-mixed and cool-spread asphalt mixture and a preparation method of the modified emulsified asphalt. The modified emulsified asphalt comprises the following raw materials in parts by weight: 50-65 parts of SBS modified asphalt, 0.5-2 parts of pentamethyl-alkyl-trimethylene di-quaternary ammonium salt emulsifier, 0.2-0.8 part of polyethylene glycol emulsifier, 0.5-1.5 parts of alkylphenol polyoxyethylene alkyl emulsifier, 0.02-0.1 part of rheology modifier, 0.005-0.05 part of plasticizer and 30-45 parts of water. According to the modified emulsified asphalt disclosed by the invention, the application time of the modified asphalt can be effectively prolonged; the modified emulsified asphalt has good compatibility with aggregated rock and has good storage stability and is very applicable to construction of the cold-mixed and cool-spread asphalt mixture; the high-temperature deformation resistance, the low-temperature cracking resistance and the fatigue resistance of the asphalt mixture can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum asphalt and its processing and preparation, and in particular relates to a modified emulsified asphalt and a preparation method thereof. Background technique [0002] At present, there are two main application methods of emulsified asphalt in my country, one is spraying type (modified) emulsified asphalt, and the other is mixing type (modified) emulsified asphalt; the main application of spraying type (modified) emulsified asphalt It is used in the permeable layer (permeable layer oil), adhesive layer, seal layer (fog seal layer) of the road industry and waterproof layer in the construction industry; the mixing type (modified) emulsified asphalt is currently mainly used in the slurry mixture, Slurry sealing or micro-surfacing technology and CA mortar projects in high-speed rail projects in recent years, the modifier in the modified emulsified asphalt in the above two application directions is main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08K5/12C08J3/03
Inventor 徐世法许鹰索智赵志超田瑞
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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