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Emulsified asphalt with strong compatibility, and preparation method thereof

A technology of emulsified asphalt and compatibility, applied in the field of emulsified asphalt with strong compatibility and its preparation, can solve the problems of restricting the promotion and application of emulsified asphalt technology

Active Publication Date: 2011-09-21
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emulsified asphalt used for slurry seal and micro-surfacing and its preparation technology described in the above patents do not involve the modification of asphalt and the strong compatibility with various stone materials, which limits the promotion and application of emulsified asphalt technology

Method used

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  • Emulsified asphalt with strong compatibility, and preparation method thereof
  • Emulsified asphalt with strong compatibility, and preparation method thereof
  • Emulsified asphalt with strong compatibility, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of modified asphalt

[0035] Heat 80 parts of base asphalt to 100-160°C, remove moisture, add 2 parts of maleic anhydride and 0.3 parts of N,N-dimethylaniline, and react for 3-6 hours; add 1 part of diethanolamine, and react for 2-4 hours; Slowly add 16.7 parts of isocyanate prepolymer, control the feeding speed, and finish adding within 2 to 3 hours. Continue to react for 2 hours after the feeding is complete to obtain the modified asphalt.

[0036] (2) Soap preparation

[0037] Prepare 2 parts of C500 emulsifier (AkzoNobel), 0.5 part of polyvinyl alcohol, 36 parts of water and 1.5 parts of hydrochloric acid to prepare a soap solution, and heat it to 60-70°C.

[0038] (3) Asphalt emulsification

[0039] Heat the above-mentioned modified asphalt to 130-150°C, emulsify the above-mentioned soap solution and modified asphalt in the emulsification equipment, and then the emulsified asphalt product will be produced.

[0040] The performance indicators of ...

Embodiment 2

[0043] (1) Preparation of modified asphalt

[0044] Heat 85 parts of base asphalt to 100-160°C, add 3 parts of maleic anhydride and 0.5 parts of N,N-dimethyl-p-toluidine after dehydration, react for 3-6 hours; add 1.2 parts of diethanolamine, react for 2- 4h; Slowly add 10.3 parts of isocyanate prepolymer, control the feeding speed, and finish adding within 2-3 hours. Continue to react for 2 hours after the feeding is complete to obtain the modified asphalt.

[0045] (2) Soap preparation

[0046] Prepare soap solution by preparing 3.5 parts of MQK-1D emulsifier (Medwishvik Co.), 0.5 parts of calcium chloride, 33.4 parts of water and 2.6 parts of hydrochloric acid, and heat it to 60-70 °C.

[0047] (3) Asphalt emulsification

[0048] Heat the above-mentioned modified asphalt to 130-150°C, emulsify the above-mentioned soap solution and modified asphalt in the emulsification equipment, and then the emulsified asphalt product will be produced.

[0049] The performance indicato...

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PUM

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Abstract

The invention relates to emulsified asphalt with strong compatibility, and a preparation method thereof. The preparation method comprises: heating base asphalt to a temperature of 100-160 DEG C to remove moisture, then sequential adding unsaturated anhydride and a catalyst, a hydrophilic chain extender, isocyanate prepolymer, wherein the isocyanate prepolymer is added in 2-3 hours through controlling feeding speed, followed by reacting for 2 hours to obtain a modified asphalt; preparing soap liquid by a emulsifier, hydrochloric acid and water, and heating the soap liquid to a temperature of 60-70 DEG C; heating the modified asphalt to a temperature of 130-150 DEG C, and emulsifying the soap liquid and the modified asphalt to obtain the modified emulsified asphalt. The modified emulsified asphalt comprises, by weight, 60-65% of the modified asphalt, 2-4.0% of an emulsifier, 0-1.0% of a stabilizer, 29.0-36.8% of water. The modified asphalt provided by the present invention has special structure. According to the present invention, emulsified asphalt after emulsifying is compatible with stone of different activities, such that a purpose of the strong compatibility is achieved.

Description

technical field [0001] The invention relates to a highly compatible emulsified asphalt used for slurry seal and micro-surfacing and a preparation method thereof. Background technique [0002] The slurry seal and micro-surface have good waterproof, anti-skid and wear-resistant properties, which can prolong the service life of the road. If the compatibility of emulsified asphalt and stone materials for the slurry seal layer or micro-surface is not good, resulting in insufficient mixing time, the emulsified asphalt will break in advance, and the asphalt cannot be effectively wrapped on the stone materials, which will cause cracks and grains on the road surface, affecting road lifespan. [0003] Modified emulsified asphalt is commonly used in slurry seal and micro-surface. Generally, modified emulsified asphalt often uses various latexes as modifiers. Latex is dispersed in asphalt, but does not chemically react with asphalt. It is a purely physical mixture. . Such as CN 18542...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L75/14C08G18/67C08K3/24C04B26/26
Inventor 范家勇黄宏海刘艳黄烁蒋方坤
Owner PETROCHINA CO LTD
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