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Warm mixing additive of asphalt mixture, preparation method and application method thereof

A technology of asphalt mixture and application method, applied in the directions of climate change adaptation, building insulation materials, building components, etc., can solve the problems of small reduction of mixing temperature, prolonged construction time, insignificant warm mixing effect, etc., to improve adhesion performance, prolonging service life, and preventing early pit disease

Active Publication Date: 2012-12-19
CHANGAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When zeolite powder is directly added to the asphalt mixture, the mixing temperature will drop slightly, and the warm mixing effect will not be significant
In areas with short construction seasons such as high cold and harsh climate conditions, the single asphalt mineral warm mixing method cannot meet the requirements of harsh construction conditions. It is necessary to develop a warm mixing additive with more significant warm mixing effect and better road performance. Extend the effective construction time of traditional hot mix asphalt mixture to meet the needs of the construction period

Method used

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  • Warm mixing additive of asphalt mixture, preparation method and application method thereof
  • Warm mixing additive of asphalt mixture, preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take the preparation of 100kg warm mix additive for asphalt mixture as an example to illustrate.

[0030] Weigh 60 kg of 100 mesh natural zeolite powder, 25 kg of emulsion, and 15 kg of nano silicon dioxide.

[0031] The composition of the emulsion is: SK-90 petroleum asphalt 5kg, cetyltrimethylammonium bromide 0.75kg, styrene-butadiene latex (SBR) 0.75kg, water 18.5kg.

[0032] The preparation method of the emulsion: first add cetyl trimethyl ammonium bromide to 60 ℃ water and stir to form an emulsifier aqueous solution; then cetyl trimethyl ammonium bromide aqueous solution, styrene-butadiene latex (SBR), Put SK-90 petroleum asphalt at 130°C into an emulsifier, emulsify and shear to obtain an emulsion.

[0033] Preparation method of asphalt mixture warm mix additive:

[0034] Get 60kg of natural zeolite powder and join in the mixer, then take 25kg of emulsion and join in the mixer, after stirring evenly, add 15kg of nano silicon dioxide, after mixing, join the compo...

Embodiment 2

[0038] Take the preparation of 100kg warm mix additive for asphalt mixture as an example to illustrate.

[0039] Weigh 50 kg of 180-mesh synthetic zeolite powder, 20 kg of emulsion, and 30 kg of nano-titanium dioxide.

[0040] The composition of the emulsion is: 0.2 kg of tallow propylene diamine, 0.2 kg of natural rubber latex (NR), and 19.6 kg of water.

[0041] The preparation method of the emulsion: first add tallow-based propylene diamine to 50°C water and stir to form an aqueous emulsifier solution; then add tallow-based propylene diamine aqueous solution and natural rubber latex (NR) into the emulsifier, emulsify, shear, Get lotion.

[0042] Preparation method of asphalt mixture warm mix additive:

[0043] Take 50kg of synthetic zeolite powder and add it to the mixer, then take 20kg of emulsion and add it to the mixer, after stirring evenly, add 30kg of nano-titanium dioxide, after mixing, add the composition to the disc granulator to prepare granular Warm mix additi...

Embodiment 3

[0047] Take the preparation of 100kg warm mix additive for asphalt mixture as an example to illustrate.

[0048] Weigh 70kg of 60 mesh natural zeolite powder, 28kg of emulsion, and 2kg of nano-zinc oxide.

[0049] The composition of the emulsion is: SK-90 petroleum asphalt 8.4kg, alkylphenol polyoxyethylene ether OP-10 1.4kg, neoprene latex (CR) 1.4kg, water 16.8kg.

[0050] The preparation method of the emulsion: first add the alkylphenol polyoxyethylene ether OP-10 to 70°C water and stir to form an emulsifier aqueous solution; then add the alkylphenol polyoxyethylene ether OP-10 aqueous solution, chloroprene latex (CR), Put SK-90 petroleum asphalt at 140°C into an emulsifier, emulsify and shear to obtain an emulsion.

[0051] Preparation method of asphalt mixture warm mix additive:

[0052] Take 70kg of natural zeolite powder and add it to the mixer, and then take 28kg of emulsion and add it to the mixer. After stirring evenly, add 2kg of nano-zinc oxide, and after mixing,...

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Abstract

The invention relates to technology of road asphalt materials, and discloses a warm mixing additive of asphalt mixture, a preparation method and an application method thereof. The warm mixing additive of the asphalt mixture comprises the following components by weight percent: 50 to 70 % of zeolite powder, 20 to 28 % of emulsion and the balance being dispersing auxiliary agents. The preparation method comprises adding the zeolite powder and then the emulsion into a feed mixer, uniformly stirring, adding the dispersing auxiliary agents, and then sending into a comminutor after uniformly stirring to obtain the warm mixing additive of the asphalt mixture. The application method comprises putting the warm mixing additive of the asphalt mixture accounting for 0.2 to 0.6 % of total weight of aggregates and the asphalt into a mixing plant to mix evenly.

Description

technical field [0001] The invention relates to road asphalt material technology, in particular to an asphalt mixture warm mixing additive and its preparation method and application method. Background technique [0002] Asphalt mixture is a mixture of a certain grade of mineral aggregate and an appropriate amount of asphalt binder under appropriate conditions and fully mixed. There are two main types of asphalt mixtures used for asphalt pavement construction and maintenance: hot mix asphalt mixture and cold mix (normal temperature) asphalt mixture. The technology of hot mix asphalt mixture is mature, but problems such as harmful gas emissions, excessive energy consumption and thermal aging in the process of mixing, transportation and paving have gradually attracted people's attention; Compared with hot mix asphalt mixture, there is still a big gap in its road performance, and it cannot replace hot mix asphalt mixture. It can only be used for asphalt pavement repair, low tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/08C08L7/02C08L11/02C08L9/04C08K3/34C08K3/36C08K3/22C08K3/26C04B26/26
CPCY02A30/30
Inventor 徐培华商博明徐玮蔡乾东贾晓放童卫红
Owner CHANGAN UNIV
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