Full-chain cold-state preparation method of asphalt-based coating material

A coating material and asphalt-based technology, which is applied in the field of full-chain cold state preparation of asphalt-based coating materials, can solve the problems of poor environmental protection, poor wear resistance and high operating environment requirements

Active Publication Date: 2021-09-14
SHANDONG JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The composition of the material is simple. Only the water-based emulsification process is used for the asphalt binder, which can realize the compensation for the asphalt film on the road surface after polishing. The thickness is too thin, and the stiffness and stability of asphalt mastic cannot be achieved. The wear resistance is poor. Finally, it is impossible to achieve "long-term durable anti-seepage";
[0009] 2. The demulsification speed is too fast, the performance is unstable, the storage time is short, and the operating environment requirements such as temperature and wind speed are high
[0010] 3. Most of the reductive and regenerative mist seal materials on the market use aromatic hydrocarbon organic solvents, which are poor in environmental protection
[0011] In addition to environmental protection performance, safety is an important consideration in the preparation process. Asphalt is a viscoelastic material, and it can be used in a fluid state at 130°C-170°C. The boiling point of the solvent used is mostly around 60°C-110°C. The mixed use of the two requires strict requirements on the sealing, high pressure, oxygen insulation and blending process of the equipment, and the production efficiency is also affected

Method used

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  • Full-chain cold-state preparation method of asphalt-based coating material
  • Full-chain cold-state preparation method of asphalt-based coating material
  • Full-chain cold-state preparation method of asphalt-based coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1: Preparation of modified masterbatch.

[0066] Table 2 Modified masterbatch material ratio and parameter control

[0067]

[0068] Material Description:

[0069] Oleic acid: molecular weight 282.46, melting point 13-14°C;

[0070] Palmitoleic acid: molecular weight 254.41, melting point 0.5°C;

[0071] Soybean oleic acid: 280≤molecular weight≤284, melting point 15℃.

[0072] 【Preparation】

[0073] Add the formula amount of main solvent 2 and anti-penetration agent into a small reaction kettle, stir at 30°C for 20 minutes to dissolve completely, then add silane coupling agent and modifier in turn, and shear and stir at 2500rpm for 40 minutes. After naturally cooling down to room temperature, ultrasonically treat for a certain period of time to obtain activated modified masterbatches, which are respectively recorded as masterbatch 1, masterbatch 2, masterbatch 3, masterbatch 4, masterbatch 5, masterbatch 6, masterbatch 7, masterbatch8. The whole proc...

Embodiment 2

[0074] Example 2: Preparation of anti-seepage long-acting durable asphalt pavement maintenance coating material.

[0075] Table 3 Material ratio of coating materials

[0076]

[0077] Material Description:

[0078] Qingchuan Rock Asphalt: Penetration 3 (0.1mm) at 25°C, softening point 220°C;

[0079] 50# asphalt: at 25°C, the penetration is 45 (0.1mm), and the softening point is 67°C;

[0080] 40# asphalt: at 25°C, the penetration is 38 (0.1mm), and the softening point is 70°C;

[0081] 30# asphalt: at 25°C, the penetration is 28 (0.1mm), and the softening point is 72°C;

[0082] 【Preparation】

[0083] A1. Using the liquid nitrogen quick-freezing process, the asphalt binder is frozen and solidified at 20°C below the brittle point of the asphalt, and sent to the ball mill crushing equipment. At the same time, functional fillers are added in proportion for synchronous crushing and grinding. The crushing specification is controlled to be no less than 200 To obtain compone...

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Abstract

The invention discloses a full-chain cold-state preparation method of an asphalt-based coating material, and belongs to the field of road engineering tests. The coating material is prepared from a main solvent I, an asphalt cement, a functional filler, a modified master batch, a stabilizer and a drier according to a specific ratio, wherein the Brookfield viscosity of the coating material at 20 DEG C is 2000-4000 cPs, and the whole preparation process of the coating material is carried out under a cold state or normal temperature condition. Compared with the prior art, the implementation method overcomes the requirement that the asphalt cement needs to be conveyed after being heated in the processing process of a traditional technology, cold-state smashing and normal-temperature mixing are achieved in the whole production chain, the stirring uniformity and stability are guaranteed, the production safety is improved, the production energy consumption is reduced, and the good application and popularization value is achieved.

Description

technical field [0001] The invention relates to the field of road engineering, and specifically provides a full-chain cold-state preparation method of an asphalt-based coating material. Background technique [0002] Asphalt pavement surface seal is one of the most commonly used preventive maintenance methods to solve pavement water seepage and loose damage. At present, it is mainly divided into fog seal, stone chip seal, slurry seal and micro surface. [0003] The mist seal is to spray emulsified asphalt or rejuvenator on the aging asphalt pavement to renew and restore the oxidized asphalt on the pavement. Spraying with spraying equipment, the construction method is simple, but it may reduce the anti-friction ability of the road surface. Only the original asphalt pavement is compensated for the lack of asphalt film. life. [0004] The stone chip seal is to spray a layer of asphalt material (hot asphalt, light asphalt, emulsified asphalt, etc.) on the road surface, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D7/61C09D7/20C09D7/65C09D7/63C09F9/00
CPCC09D195/00C09D7/61C09D7/20C09D7/65C09D7/63C09F9/00C08L2201/08C08L2205/035C08L2205/03C08K2003/265C08L97/02C08L9/06C08L11/02C08K3/26C08K5/09C08K5/5425
Inventor 王君邱昌春王春林李振丰张建民于建国
Owner SHANDONG JIAOTONG UNIV
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