High-solid-content emulsified asphalt for stress absorbing layer, preparation method and construction method thereof

A stress-absorbing layer and emulsified asphalt technology, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of complex construction procedures and high construction costs, achieve excellent fatigue resistance, reduce construction costs, and ensure adhesion Effect

Inactive Publication Date: 2019-03-29
山东高速建材集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, the current domestic stress absorbing layer construction has the disadvantages of high construction cost and complicated construction procedures.

Method used

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  • High-solid-content emulsified asphalt for stress absorbing layer, preparation method and construction method thereof
  • High-solid-content emulsified asphalt for stress absorbing layer, preparation method and construction method thereof
  • High-solid-content emulsified asphalt for stress absorbing layer, preparation method and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 1. Preparation of emulsified asphalt

[0069] a. Preparation of raw materials: AH-50 ordinary asphalt accounts for 50wt%, oxygen amine emulsifier accounts for 0.7wt%, styrene-butadiene latex modifier accounts for 10.0wt%, furfural extract oil asphalt additive accounts for 12wt%, and the remaining components are water And pH regulator, wherein water adopts tap water, and pH regulator is hydrochloric acid, by mass percentage;

[0070] b. Add the asphalt modifier described in a to ordinary asphalt, mix well, and heat to 135°C;

[0071] c. Weigh the emulsifier, modifier and water in proportion to prepare the soap solution, adjust the pH value of the soap solution to 2.0 with acid, and then heat to 50°C;

[0072] d. Pass the above-mentioned emulsifier soap solution and the mixture of asphalt and asphalt additives through a colloid mill in sequence to obtain emulsified asphalt finished product after grinding.

[0073] 2. Construction of emulsified asphalt

[0074] combine ...

Embodiment 2

[0080] 1. Preparation of emulsified asphalt

[0081] a. Preparation of raw materials: AH-70 ordinary asphalt accounts for 61wt%, alkyl polyamine or quaternary ammonium salt emulsifier accounts for 0.2wt%, nitrile latex modifier accounts for 5.0wt%, aromatic hydrocarbon extraction oil asphalt additive accounts for 7wt% %, the remaining components are water and a pH regulator, wherein the water adopts industrial water, and the pH regulator is formic acid, in mass percent;

[0082] b. Add the asphalt additive described in a to ordinary asphalt, mix well, and heat to 135°C;

[0083] c. Weigh the emulsifier, modifier and water in proportion to prepare the soap solution, adjust the pH value of the soap solution to 2.0 with acid, and then heat to 50°C;

[0084] d. Pass the above-mentioned emulsifier soap solution and the mixture of asphalt and asphalt additives through a colloid mill in sequence to obtain emulsified asphalt finished product after grinding.

[0085] 2. Construction ...

Embodiment 3

[0092] 1. Preparation of emulsified asphalt

[0093] a. Preparation of raw materials: AH-130 ordinary asphalt accounts for 70wt%, imidazoline or amide emulsifier accounts for 2.0wt%, butylpyridine latex modifier accounts for 2.0wt%, residual oil asphalt additive accounts for 1wt%, and the remaining components Be water and pH adjusting agent, wherein water adopts distilled water, and pH adjusting agent is hydrochloric acid, by mass percentage;

[0094] b. Add the asphalt additive described in a to ordinary asphalt, mix well, and heat to 135°C;

[0095] c. Weigh the emulsifier, modifier and water in proportion to prepare the soap solution, adjust the pH value of the soap solution to 2.0 with acid, and then heat to 50°C;

[0096] d. Pass the above-mentioned emulsifier soap solution and the mixture of asphalt and asphalt additives through a colloid mill in sequence to obtain emulsified asphalt finished product after grinding.

[0097] 2. Construction of emulsified asphalt

[00...

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Abstract

The invention discloses a high-solid-content emulsified asphalt for a stress absorbing layer, a preparation method and a construction method thereof. The high-solid-content emulsified asphalt is prepared from ordinary asphalt, asphalt additive, emulgator, modifier, water and pH regulator; the solid content is 67-75%; the raw materials by weight percent are as follows: 50-70% of ordinary asphalt, 1-12% of asphalt additive, 0.2-3.0% of emulgator, 2.0-10.0% of modifier and the balance of water and pH regulator. The preparation method comprises the following steps: heating ordinary asphalt; addingasphalt additive into ordinary asphalt at a ratio and uniformly stirring, thereby acquiring a mixture of ordinary asphalt and asphalt additive; preparing emulgator into an aqueous solution, and thenadding modifier, thereby acquiring an emulgator liquid soup; using pH regulator for regulating pH value of the emulgator liquid soup, and then heating; successively putting the emulgator liquid soup and the mixture of ordinary asphalt and asphalt additive into a colloid mill, and then milling, thereby acquiring an end product of emulsified asphalt. According to the invention, a synchronous macadamseal coat vehicle is adopted for spraying/spreading emulsified asphalt and macadam; a 'prime coat and stress absorbing layer' effect can be achieved through once construction; construction process isreduced; construction cost is lowered.

Description

technical field [0001] The invention relates to the technical field of emulsified asphalt and construction, in particular to emulsified asphalt with high solid content for a stress absorbing layer, a preparation method and a construction method thereof. Background technique [0002] At present, the main form of pavement structure of high-grade highways in my country is semi-rigid base structure, and more than 90% of asphalt pavement uses semi-rigid base. The action of load will inevitably lead to fatigue cracking, and reflective cracks will be formed on the reflective road surface from bottom to top. In order to prevent reflection cracks, domestic measures mainly include: (1) paving asphalt macadam stress absorbing layer between semi-rigid base and asphalt sublayer; (2) paving a layer of rubber on semi-rigid base Asphalt stress-absorbing layer; (3) laying an anti-crack layer of glass fiber geogrid on the semi-rigid base; (4) laying an anti-crack layer of geotextile on the se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08J3/03E01C19/18E01C7/32
CPCC08J3/03C08J2395/00E01C7/325E01C19/185
Inventor 穆明浩刘新强崔若宾王峥张锐宋征冯勋红姚明董光彬耿立涛赵景原郝晓君高晓军
Owner 山东高速建材集团有限公司
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