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Warm mixing agent suitable for high-viscosity asphalt and preparation method thereof

A technology of warm mixing agent and asphalt, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems that it is difficult to learn from research results, and achieve the effect of improving the high temperature softening point and using simple methods

Inactive Publication Date: 2018-12-11
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, warm mix agents are used in densely graded asphalt concrete and SMA asphalt pavement, but the drainage asphalt pavement is different from other mixtures in terms of aggregate grading, and the most important thing is that the binder used in it is high-viscosity asphalt, because it is difficult to Drawing on research results from other types of materials

Method used

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  • Warm mixing agent suitable for high-viscosity asphalt and preparation method thereof
  • Warm mixing agent suitable for high-viscosity asphalt and preparation method thereof
  • Warm mixing agent suitable for high-viscosity asphalt and preparation method thereof

Examples

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Effect test

Embodiment 1

[0044] A warm mixing agent suitable for high-viscosity asphalt, comprising the following substances in parts by mass:

[0045] Propylene glycol monostearate 5 parts

[0046] 25 parts octadecane

[0047] Polyethylene wax 1 part

[0048] Castor oil 40 parts,

[0049] The warm mixing agent is mainly prepared by the following steps:

[0050] Step 1, the castor oil of proportioning amount is dehydrated at 100 DEG C;

[0051] Step 2, mixing the propylene glycol monostearate, crystal wax, polyethylene oligomer and dehydrated compatibilizer in a proportioning amount at 140°C in a stirrer with a heating function according to the preparation ratio;

[0052] Step 3: Blend, extrude, granulate and cool the homogeneously mixed substance in Step 2 in a screw extruder at a temperature of 110°C.

[0053] The warm mix agent that table 1 embodiment 1 makes is to the performance influence of high-viscosity asphalt

[0054]

[0055]

[0056] The warm mixing agent that table 2 embodimen...

Embodiment 2

[0059] A warm mixing agent suitable for high-viscosity asphalt, comprising the following substances in parts by mass:

[0060] 1 part propylene glycol laurate

[0061] 29 parts of glyceryl methacrylate

[0062] 1-heptene 1 part

[0063] Amide modified polyethylene wax 25 parts

[0064] 0.5 parts of furfural oil

[0065] 0.5 part of phthalic acid diester,

[0066] The warm mixing agent is mainly prepared by the following steps:

[0067] Step 1, dehydrating the compatibilizer in a proportioned amount at 125°C;

[0068] Step 2. Prepare propylene glycol laurate, crystalline wax, polyethylene oligomer and dehydrated compatibilizer (furfural oil and phthalate diester) in a stirrer with heating function at 140° C. The proportion is mixed evenly;

[0069] Step 3: Blend, extrude, granulate and cool the homogeneously mixed substance in Step 2 in a screw extruder at a temperature of 80°C.

[0070] The warm mix agent that table 3 embodiment 2 makes is to the performance influence of...

Embodiment 3

[0076] A warm mixing agent suitable for high-viscosity asphalt, comprising the following substances in parts by mass:

[0077] Propylene glycol monostearate 2 parts

[0078] Propylene glycol laurate 7 parts

[0079] 1 part glyceryl methacrylate

[0080] 7.5 parts of octadecane

[0081] 1-heptene 7.5 parts

[0082] 5 parts of polytetrafluoroethylene modified polyethylene wax

[0083] High density oxidation modified polyethylene wax 10 parts

[0084] 3 parts castor oil

[0085] 6 parts furfural oil

[0086] 1 part phthalate diester,

[0087] The warm mixing agent is mainly prepared by the following steps:

[0088] Step 1, dehydrating the compatibilizers in proportion at 115°C;

[0089] Step 2, mix the proportioned amount of surfactant, crystal wax, polyethylene oligomer and dehydrated compatibilizer in a stirrer with heating function at 140°C according to the preparation ratio;

[0090] Step 3: Blending, extruding, granulating and cooling the homogeneously mixed substa...

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Abstract

The invention belongs to the field of auxiliaries for asphalt and relates to a warm mixing agent suitable for high-viscosity asphalt and a preparation method thereof. The warm mixing agent comprises the following substances in parts by weight: 5-30 parts of a surfactant, 1-25 parts of crystal wax, 1-25 parts of a polyethylene oligomer and 1-40 parts of a compatilizer. The high temperature viscosity of the high-viscosity asphalt doped with the warm mixing agent at a construction temperature can be greatly reduced; meanwhile, the 60-DEG C kinetic viscosity of the asphalt is greatly increased, the high-temperature property of the asphalt is improved, and other indexes of the asphalt also can meet the normative index requirements; from the view of a mixture, the warm mixing agent can still meet the compaction requirement under a condition of reducing the construction temperature by 20 DEG C, meanwhile, the high temperature stability of a drainage pavement asphalt mixture is improved, and the low-temperature crack resistance and water stability of the drainage pavement asphalt mixture have no obvious change.

Description

technical field [0001] The invention relates to materials for pavement of roads, bridges and tunnels, and to an auxiliary agent for asphalt, in particular to a warm mixing agent suitable for high-viscosity asphalt and a preparation method thereof. Background technique [0002] Drainage asphalt pavement belongs to an ecological environment-friendly pavement, which has excellent drainage performance, reduces the generation of water mist, water drift and glare on the road surface in rainy days, greatly improves driving safety, and has the functions of noise reduction and anti-skid at the same time, so It is gradually favored by experts and workers in the road field. In order to ensure good drainage performance and road performance of drainage asphalt pavement, it is necessary to use high-viscosity asphalt, which increases the construction viscosity of asphalt mixture, increases the difficulty of construction, and increases energy consumption, which is harmful to the environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/06C08L23/06C08L91/00C08L23/30C08L27/18C08K5/12C08K5/103
CPCC08L95/00C08L2201/08C08L2205/025C08L2205/035C08L91/06C08L23/06C08L91/00C08K5/103C08L23/24C08K5/12C08L23/30C08L27/18
Inventor 董夫强于新司晶晶秦永春梁星敏石小培丁功瀛曾蔚
Owner HOHAI UNIV
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