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Rubber powder modified emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and rubber powder, which is applied in the direction of climate sustainability, building components, and sustainable waste treatment. It can solve the problems of inability to store and use rubber asphalt, high energy consumption of rubber asphalt, and inconvenient construction, and achieve road use Good performance, energy saving, and easy construction

Active Publication Date: 2012-07-04
LIAONING RENTAI TRANSPORTATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of rubber powder modified emulsified asphalt and its preparation method, while retaining the road performance of rubber asphalt, it solves the problem that rubber asphalt cannot be stored and used at normal temperature, and overcomes the high energy consumption of rubber asphalt. Consumption, construction inconvenience, performance attenuation and other shortcomings, while filling the technical gap of rubber powder modified emulsified asphalt

Method used

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  • Rubber powder modified emulsified asphalt and preparation method thereof
  • Rubber powder modified emulsified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take Liaohe No. 90 asphalt 1.5t, use cationic emulsifier, emulsify into associative emulsified asphalt; take water less than 5%, metal content less than 0.4%, ash content less than 8%, mesh number less than 20 mesh waste tire rubber powder 0.3 t, add 0.3% activator of rubber powder mass, stir in the mixing tank at low speed (300-1000 rpm) for 5 minutes, raise the temperature to 150°C, and keep the temperature for 60 minutes to make surface activated rubber powder; add after cooling 50% composite treatment solution of rubber powder quality, the composite treatment solution is composed of 2 parts by mass of SBR emulsion and 5 parts by mass of soap solution, and then stirred at a low speed (300-1000 rpm) for 5 minutes; the rubber powder after composite treatment was added Grind the emulsified asphalt once more with a high-speed shearing machine to obtain rubber powder modified asphalt, the performance index of which is:

[0027] Demulsification speed: medium crack;

[002...

Embodiment 2

[0038] Take Liaohe No. 90 asphalt 1.5t, use cationic emulsifier, emulsify into associative emulsified asphalt; take water less than 5%, metal content less than 0.4%, ash content less than 8%, mesh number less than 20 mesh waste tire rubber powder 0.15 t, add coupling agent accounting for 1.2% of the mass fraction of the rubber powder, and then add 0.3% of the activator of the rubber powder mass, in the mixing tank, stir at a low speed (300-1000 rpm) for 5 minutes, and heat up to 150 ° C, Keep the temperature for 60 minutes, after cooling, add a composite treatment solution with the same quality as the rubber powder, wherein the composite treatment solution is composed of 2 parts by mass of SBS emulsion, 2 parts by mass of reclaimed rubber solution and 6 parts by mass of soap solution, and then stir at a low speed (300-1000 rpm / min) for 5 minutes; add the compounded rubber powder into the emulsified asphalt, and then grind it twice with a high-speed shearing machine to obtain a...

Embodiment 3

[0050] Take Liaohe No. 90 asphalt 1.5t, use cationic emulsifier, emulsify into associative emulsified asphalt; take water less than 5%, metal content less than 0.4%, ash content less than 8%, mesh number less than 20 mesh waste tire rubber powder 0.2 t, add coupling agent accounting for 1.2% of the mass fraction of the rubber powder, and then add 0.3% of the activator of the rubber powder mass, in the mixing tank, stir at a low speed (300-1000 rpm) for 5 minutes, and heat up to 150 ° C, Hold the temperature for 60 minutes, add 60% composite treatment solution of rubber powder mass after cooling, the composite treatment solution is composed of 2 parts by mass of SBR emulsion, 2 parts by mass of SBS emulsion and 6 parts by mass of soap liquid, and then stir at a low speed (300~1000 rpm ) for 5 minutes; add the compounded rubber powder into the emulsified asphalt, and then grind it 3 times with a high-speed shearing machine to obtain the rubber powder modified asphalt. The perform...

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Abstract

The invention provides rubber powder modified emulsified asphalt. The rubber powder modified emulsified asphalt consists of emulsified asphalt, rubber powder and composite treatment fluid, and is characterized in that: the rubber powder modified emulsified asphalt contains macroscopic rubber powder particles, wherein the mass ratio of emulsified asphalt evaporation residues to the rubber powder is 5:2-10:1; and the mass ratio of the rubber powder to the composite treatment fluid is 1:1-2:1. A preparation method of the rubber powder modified emulsified asphalt comprises the following steps of:performing surface treatment on the rubber powder to substantially form dough-like fibers with rubber cores; and treating through the composite treatment fluid so as to make the dough-like fibers excellently compatible with the emulsified asphalt. Therefore, the rubber powder modified emulsified asphalt can be used at normal temperature, the evaporation residues of the rubber powder modified emulsified asphalt has the same performance as that of the rubber asphalt, and the rubber powder modified emulsified asphalt and the method has the advantages of simple and convenient process, low cost, energy conservation, emission reduction, environmental friendliness and resource recycling and the like.

Description

technical field [0001] The invention relates to a road construction material, and in particular provides a rubber powder modified emulsified asphalt and a preparation method thereof. Background technique [0002] Rubber asphalt has been widely used in the construction and maintenance of asphalt pavement because of its good road performance. However, the production and use of rubber asphalt must be carried out under high temperature conditions, resulting in large energy consumption. , The performance is easy to attenuate, the construction is inconvenient, the secondary environmental pollution and other problems. [0003] Emulsified asphalt is also widely used in asphalt pavement due to its environmental protection, energy saving, and convenient construction. However, ordinary emulsified asphalt has problems such as high-temperature stability, low-temperature crack resistance, and water damage resistance that cannot fully meet the requirements of road use, especially in roads...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L21/00C08L53/02C08L9/06C08L17/00C04B26/26C04B18/22
CPCY02W30/91
Inventor 周乃承
Owner LIAONING RENTAI TRANSPORTATION TECH CO LTD
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