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A kind of recycled colloidal permeable asphalt concrete and its preparation method

A technology of permeable asphalt and reclaimed rubber, which is applied in the field of road materials, can solve the problems of low strength of permeable pavement, poor frost heave resistance, and insufficient durability, and achieve the goals of improving freeze-thaw resistance, improving deformation performance, and improving durability Effect

Active Publication Date: 2021-04-13
CHINA TIESIJU CIVIL ENG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of recycled colloidal permeable asphalt concrete and its preparation method, which are used to solve the problems of low strength, insufficient durability, poor frost heave resistance and easy clogging of pores in traditional permeable pavement

Method used

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  • A kind of recycled colloidal permeable asphalt concrete and its preparation method
  • A kind of recycled colloidal permeable asphalt concrete and its preparation method
  • A kind of recycled colloidal permeable asphalt concrete and its preparation method

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preparation example Construction

[0035] The invention provides a method for preparing permeable asphalt concrete with recycled rubber particles, comprising the following steps:

[0036] S1, heat the base asphalt to a certain temperature, add the extension agent while stirring, then add SBS and composite stabilizer, keep the temperature constant and continue stirring to obtain the modified asphalt mixture.

[0037] In a specific embodiment of the present invention, the extension agent in step S1 is one or more of rubber oil, furfural oil, waste engine oil, biomass pitch and heavy mineral oil;

[0038] Composite stabilizer comprises the component of following parts by weight: sulfur powder 40-90 parts (such as 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts, 80 parts, 85 parts, 90 parts parts), organic sulfur 10-40 parts (such as 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts), polyvinyl alcohol 10-20 parts (such as 10 parts, 11 parts, 12 parts , 13 parts, 1...

Embodiment 1

[0067] This embodiment provides a method for preparing permeable asphalt concrete with recycled rubber particles, which includes the following steps:

[0068] S1, add 100 parts by mass of base asphalt into a mixing tank and heat to 185°C, add 2.5 parts by mass of rubber oil while stirring, then add 6 parts by mass of SBS and 0.15 parts by mass of composite stabilizer, and keep the temperature at 150°C constant Continue to stir to obtain the mixture; wherein the composite stabilizer includes the following components by weight: 60 parts of sulfur powder, 25 parts of organic sulfur, 15 parts of polyvinyl alcohol, 15 parts of stearyl benzoyl methane and 5 parts of nano-zinc oxide ;

[0069] S2, placing the mixture obtained in step S1 in a colloid mill for shearing, storing and developing at 150° C. for 7 hours, and finally obtaining SBS modified asphalt;

[0070] S3, adding 10 parts by mass of old tire rubber powder particles to the SBS modified asphalt in step S2, stirring at 19...

Embodiment 2

[0083] This embodiment provides a method for preparing permeable asphalt concrete with regenerated rubber particles. The difference between this embodiment and Embodiment 1 is that in step S4, the mass ratio of SBS regenerated rubber particles modified asphalt to different graded batches is changed. That is to change the asphalt ratio of recycled rubber particle permeable asphalt concrete with different gradations. The oil-stone ratio of PAC20 recycled rubber particle permeable asphalt concrete is 4.5%, 5%, 5.5% and 6%. The oil-stone ratio of PAC16 recycled rubber particle permeable asphalt concrete is 4.5%, 5%, 5.5% and 6%, the oil-stone ratio of PAC13 recycled rubber particle permeable asphalt concrete is 5%, 5.5%, 6% and 6.5%, the oil-stone ratio of PAC10 recycled rubber particle permeable asphalt concrete is 5%, 5.5% %, 6% and 6.5%; the mass percentages of each component in batches of different grades are shown in Table 5 below.

[0084] The mass percent of each component ...

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Abstract

The invention provides a recycled asphalt permeable asphalt concrete and a preparation method thereof, comprising the following steps: S1, adding modifiers and various additives to matrix asphalt, stirring and shearing to obtain a mixture; S2, storing and developing to prepare SBS modified S3, preparation of SBS recycled rubber particles modified asphalt; S4, preparation of recycled rubber particles permeable asphalt concrete. After the regenerated rubber particles in the present invention are mixed with SBS modified asphalt, the light components in the modified asphalt are absorbed, the viscosity of the modified asphalt increases, and then the thickness of the coated aggregate asphalt film is increased, effectively improving the relationship between the aggregate particles. Cohesion. Colloidal particles have excellent elastic properties. When the internal pores freeze and heave under extreme temperatures, it not only improves the freeze-thaw resistance of permeable asphalt concrete, but also improves the durability of permeable asphalt concrete, and the rubber particles with reasonable gradation can optimize permeable asphalt. The pore distribution of the concrete delays the clogging of the pores of the permeable asphalt concrete and ensures its permeable function.

Description

technical field [0001] The invention belongs to the technical field of road materials, and in particular relates to a recycled rubber particle permeable asphalt concrete and a preparation method thereof. Background technique [0002] With the rapid increase of the level of urbanization in our country, the area of ​​hardened pavement has increased sharply, which not only destroys the original ecosystem, but also changes the original natural ecological background and hydrological characteristics of the city. More than 70% of the rainfall forms runoff and is discharged. As a result, the city cannot store water, and there is a phenomenon that the heavy rain must be fished, and the phenomenon of drought immediately after the rain occurs. Sponge city is a historic and strategic step to realize the six-in-one comprehensive drainage and ecological drainage of "seepage, stagnation, storage, purification, use, and drainage" from the era of fast drainage, timely and nearby drainage, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/00008C04B2111/00284C04B2111/0075C04B2201/50C04B24/001C04B24/00C04B2103/0068C04B22/02C04B24/16C04B24/2623C04B24/08C04B22/06C04B18/22
Inventor 查显卫周江孟会含黄建波肖飞鹏王金刚郭瑞
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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