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Asphalt mixture additive and preparation method thereof

An asphalt mixture and additive technology, applied in the field of asphalt additives, can solve problems such as high price, and achieve the effects of improving crack resistance, better dispersibility, and excellent physical and chemical properties

Active Publication Date: 2015-04-29
SHANXI PROVINCIAL RES INST OF COMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used modified asphalt materials also have a very big disadvantage, that is, the price is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] According to the mass ratio of each component, 20 parts of polyethylene, 5 parts of sulfur, 20 parts of calcium sulfate whiskers, 20.5 parts of DFS-2, 1 part of bis(2-ethylhexyl) phthalate, 4 parts of polyethylene, 4. Mix 0.2 part of isopropylidene diphenol C12-15 alcohol phosphite fully in a high-speed mixer, then mix the above mixture with Shell 90 # 50 parts of asphalt are melt-blended, the temperature is controlled between 145-155°C, and the high-performance asphalt mixture additive is obtained through a prilling tower. According to the standard of my country's "Test Regulations for Asphalt and Asphalt Mixture in Highway Engineering" (JTJ052-2000), after adding the additive of the present invention, the dynamic stability of the prepared asphalt mixture test piece is greater than 3000 times / mm, and the freeze-thaw splitting residual strength The ratio is 90%.

Embodiment 2

[0030] According to the mass ratio of each component, 20 parts of SBS, 10 parts of zinc oxide, 10 parts of gypsum whiskers, 0.5 parts of zinc stannate, 1 part of bis(2-ethylhexyl) phthalate, 1 part of diphenyl 0.2 part of isodecyl phosphite is fully mixed in a high-speed mixer, and then the above mixture and Shell 90 # 50 parts of asphalt are melt-blended, the temperature is controlled between 145-155°C, and the high-performance asphalt mixture additive is obtained through a prilling tower. According to the standard of my country's "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTJ052-2000), after adding the additive of the present invention, the dynamic stability of the prepared asphalt mixture specimens is greater than 4000 times / mm, and the freeze-thaw splitting residual strength The ratio is 92%.

Embodiment 3

[0032] According to the mass ratio of each component, 15 parts of SBS, 5 parts of SBR, 6 parts of colloidal sulfur, 4 parts of zinc oxide, 10 parts of calcium sulfate whiskers, 1 part of zinc stannate, bis(2-ethylhexyl phthalate) ) 1.5 parts of esters, 0.5 parts of poly-4,4, isopropylidene diphenol C12-15 alcohol phosphite are fully mixed in a high-speed mixer, and then the above mixture and Shell 90 # 60 parts of asphalt are melt-blended, the temperature is controlled between 145-155°C, and the high-performance asphalt mixture additive is obtained through a prilling tower. According to my country's "Highway Engineering Asphalt and Asphalt Mixture Test Regulations" (JTJ052-2000) standard, after adding the additive of the present invention, the dynamic stability of the prepared asphalt mixture test piece is greater than 5000 times / mm, and the freeze-thaw splitting residual strength The ratio is 94%.

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Abstract

The invention relates to an asphalt mixture additive and a preparation method thereof. The asphalt mixture additive comprises the following components in parts by mass: 10-20 parts of a polymer, 5-10 parts of a cross linker, 10-20 parts of padding, 0.5-2 parts of a smog inhibitor, 1-2 parts of a plasticizer, 0.1-1 part of an antioxidant and 50-70 parts of matrix asphalt, wherein the matrix asphalt is one of Shell 70#, Shell 90#, SK70# or SK90#. Compared with the prior art, the asphalt mixture additive has the advantages that the anti-rutting performance and water damage resistance of an asphalt mixture can be significantly improved, the low-temperature cracking resistance and ageing resistance of asphalt concrete can be effectively improved, and the service life of asphalt roads is prolonged; meanwhile, the asphalt mixture additive can substitute about 15-25% of asphalt raw materials in the asphalt mixture, so that the production temperature is reduced to 140 DEG C, then the smoking phenomenon in the production and spreading processes is effectively reduced, and the asphalt mixture additive is energy-saving and environment-friendly; and the production method is simple, low in cost and suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of asphalt additives, and in particular relates to an asphalt mixture additive and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, the traffic volume is growing rapidly, channelized traffic is obvious, and the proportion of large-scale vehicles, heavy-duty vehicles, and overloaded vehicles is increasing year by year, which poses serious challenges to traditional asphalt pavement. After decades of practice at home and abroad, especially the construction of domestic expressways, asphalt pavement generally has two major problems: insufficient durability and serious early damage, resulting in various types and forms of pavement damage. [0003] In order to solve various diseases of asphalt pavement, at present, the asphalt mixture is mainly modified in two aspects at home and abroad to achieve the purpose of reducing, delaying and solving road rutti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/06C08L53/02C08L9/06C08K13/04C08K3/22C08K7/08C08K3/24C08K5/12C08K5/526C08K5/14C08K3/06C08K5/3472
Inventor 马德崇赵队家王威樊长昕舒兴旺庞瑾瑜
Owner SHANXI PROVINCIAL RES INST OF COMM
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