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Special colored asphalt binder for drainage pavement and preparation method thereof

A technology for colored asphalt and cementitious materials, applied in the field of colored asphalt, can solve the problems of uneven distribution of pigments, poor road performance and durability, and fading of the road surface.

Active Publication Date: 2019-12-17
GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of colored asphalt binder has gone through two different stages. The early use of decolorized asphalt products has high production and processing costs, uneven distribution of pigments, poor road performance and durability, and road surface diseases and pavement fading often occur in the early stages of pavement use. Therefore, the decolorized asphalt production process is gradually eliminated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Formula: 90 parts of C9 petroleum resin, 45 parts of naphthenic rubber oil, 20 parts of SBS, 5 parts of SBR, 5 parts of high-density polyethylene, 5 parts of phenolic resin, 6 parts of GN-1 high-viscosity asphalt modifier, Sasobit 3 parts of warm mixing agent, 10 parts of polyamide PA66, 0.3 parts of sulfur, 0.2 parts of zinc stearate.

[0031] Preparation method:

[0032] 1) Weigh each raw material, and after mixing, continue to stir and swell for 2-3 hours at 120-140°C until it reaches a molten state;

[0033] 2) heating the molten raw materials in step 1) to 160-180°C, high-speed shearing or colloid mill grinding for 1-2 hours, to obtain semi-finished products of special colored asphalt binder;

[0034] 3) Put the semi-finished product in step 2) into the development tank, and develop it for 2-3 hours under the condition of 170-185°C to obtain the finished product of special colored asphalt binder.

[0035] According to the tests, the technical indicators of the sp...

Embodiment 2

[0037]Formula: 100 parts of C9 petroleum resin, 55 parts of naphthenic rubber oil, 20 parts of SBS, 5 parts of SBR, 5 parts of high-density polyethylene, 5 parts of rosin resin, 6 parts of GN-1 high-viscosity asphalt modifier, Sasobit 3 parts of warm mixing agent, 10 parts of polyamide PA66, 0.3 parts of sulfur, 0.2 parts of zinc stearate.

[0038] Preparation method: with embodiment 1.

[0039] After testing, the technical indicators of the special colored asphalt binder in Example 2 are: penetration (25°C) of 44, softening point of 82°C, ductility (5°C) of 46cm, dynamic viscosity of 60°C of 31000Pa.s, elasticity Recovery (25°C) is 85%, kinematic viscosity at 135°C is 1.8Pa.s, storage stability is 48 hours softening point difference is 1.2°C, mass loss after film oven heating test (TFOT) is 0.2%, penetration ratio (25 °C) is 70%, the ductility (5 °C) is 25 cm, and the ductility (15 °C) is greater than 1 m.

Embodiment 3

[0041] Formula: 90 parts of C9 petroleum resin, 45 parts of naphthenic rubber oil, 22 parts of SBS, 6 parts of SBR, 6 parts of high-density polyethylene, 10 parts of rosin resin, 8 parts of TPS asphalt high viscosity agent, 4 parts of Sasobit warm mixing agent , polyamide PA6615 parts, sulfur 0.5 parts, zinc stearate 0.2 parts.

[0042] Preparation method: with embodiment 1.

[0043] The technical indicators of the special colored asphalt binder in Example 3 are as follows: penetration (25°C) of 38, softening point of 87°C, ductility (5°C) of 50cm, dynamic viscosity of 60°C of 42000Pa.s, elasticity Recovery (25°C) is 92%, kinematic viscosity at 135°C is 2.5Pa.s, storage stability is 48 hours softening point difference is 1°C, mass loss after film oven heating test (TFOT) is 0.3%, penetration ratio (25 ℃) is 73%, the ductility (5℃) is 33cm, and the ductility (15℃) is greater than 1m.

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Abstract

The invention discloses a special colored asphalt cementing agent for a water drainage pavement. The special colored asphalt cementing agent is prepared from the following raw materials in parts by weight: 20 to 120 parts of petroleum resin, 20 to 100 parts of rubber oil, 3 to 30 parts of a thermoplastic elastomer, 1 to 10 parts of a rubber type modified material, 1 to 10 parts of high-density polyethylene, 1 to 13 parts of thermoplastic resin, 2 to 20 parts of a high-viscosity agent, 1 to 10 parts of temperature mixing agent, 4 to 40 parts of polyamide, 0.2 to 1 part of a vulcanizing agent and 0.1 to 0.5 part of a dispersing agent. A corresponding preparation method comprises performing development twice at the temperature of 120 to 140 DEG C and 170 to 185 DEG C, each development is carried out for 2 to 3 hours. The special colored asphalt cementing agent prepared by the process meets the index requirement of the Technical Specification for Colored Asphalt Pavement of Urban Road, has the characteristics of high resistance to low and high temperatures, high adhesivity, high resistance to water damage, high durability and the like, and is particularly applied to Southern damp-hot type, large traffic volume type and water drainage type colored asphalt pavements.

Description

technical field [0001] The invention belongs to the technical field of colored asphalt, and in particular relates to a special colored asphalt binder used for drainage pavement and a preparation method thereof. Background technique [0002] At present, colored asphalt pavement has been widely used in parks, bicycle lanes, bus lanes, and landscape roads. The use of colored asphalt pavement for urban roads has many advantages: ①Color improves the appearance of the road surface; ②Reduces fatigue and helps driving safety; Unlike ordinary asphalt pavement, the binder used in colored asphalt pavement is not petroleum asphalt, but colored asphalt binder. [0003] The preparation of colored asphalt binder has gone through two different stages. The early use of decolorized asphalt products has high production and processing costs, uneven distribution of pigments, poor road performance and durability, and road surface diseases and pavement fading often occur in the early stages of pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L57/02C08L91/00C08L53/02C08L9/06C08L23/06C08L61/06C08L93/04C08L77/06C08K3/06C08K5/098
CPCC08L57/02C08L2205/035C08L2207/062C08L91/00C08L53/02C08L9/06C08L23/06C08L61/06C08L77/06C08K3/06C08K5/098C08L93/04
Inventor 徐国栋覃润浦刘斌清李培国胡省谭继宗禤炜安彭文举王鹏赵梓竹
Owner GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
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