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Anti-rutting agent, asphalt material and preparation method

A technology of anti-rutting agent and asphalt material, which is used in building thermal insulation materials, building components, buildings, etc., can solve the problems of low asphalt cohesion and low anti-rutting performance of mixtures, achieve strong cohesive performance and improve anti-rutting performance. , to ensure the effect of anti-skid performance

Active Publication Date: 2011-09-14
ROADMAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention is to provide an anti-rutting agent, asphalt material and preparation method, to solve the problem that the asphalt made by the above-mentioned anti-rutting agent has low cohesiveness and the prepared mixture has low anti-rutting performance

Method used

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  • Anti-rutting agent, asphalt material and preparation method
  • Anti-rutting agent, asphalt material and preparation method
  • Anti-rutting agent, asphalt material and preparation method

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preparation example Construction

[0039] After determining a certain amount of anti-rutting agent raw materials, the anti-rutting agent is prepared according to the preparation method of the invention, and the anti-rutting agent is tested to measure the performance of the product itself. The test and detection indicators mainly include: melting point, viscosity (135°C) and tensile strength. Extensibility (strength, elongation).

[0040] Adopt the anti-rutting agent in the embodiment of the present invention to prepare the process of asphalt comprising:

[0041] Heat asphalt or modified asphalt to 135-150°C, add 5% to 15% anti-rutting agent, stir together and heat to 170-185°C to effectively mix asphalt and anti-rutting agent, mix the mixture evenly and then cool Get asphalt material.

[0042] Penetration, ductility (5°C), softening point and dynamic viscosity (60°C) were tested for asphalt materials.

[0043] Carry out mixture gradation design, obtain the amount of coarse aggregate, fine aggregate, mineral p...

Embodiment 1

[0045] In this embodiment, taking the production of the anti-rutting agent 100kg of the present invention as an example, the raw materials used and the proportion thereof are:

[0046] Polyurethane: 30.0kg

[0047] Polyethylene terephthalate: 40.0kg

[0048] Polymethacrylonitrile: 15.0kg

[0049]Calcium carbonate: 15.0kg

[0050] Its preparation method is as follows:

[0051] 1. Add the diphenylmethane diisocyanate and propylene glycol into the tank reactor at a mass ratio of 1:1, fill the whole process with nitrogen protection, stir and heat to 145-155°C, preferably 150°C, and react 4 Hours to obtain polyurethane.

[0052] 2. Add 15.0kg of calcium carbonate powder into the reaction kettle for producing polyurethane, stir evenly, and discharge the material for storage.

[0053] 3. Add the polyurethane containing calcium carbonate powder, polymethacrylonitrile and polyethylene terephthalate into the twin-screw extruder according to the ratio, and the processing temperature...

Embodiment 2

[0066] In this embodiment, taking the production of the anti-rutting agent 100kg of the present invention as an example, the raw materials used and the proportion thereof are:

[0067] Polyurethane: 40.0kg

[0068] Polyethylene terephthalate: 50.0kg

[0069] Polymethacrylonitrile: 5.0kg

[0070] Calcium carbonate: 5.0kg

[0071] Its preparation method is as follows:

[0072] 1. Add the diphenylmethane diisocyanate and propylene glycol into the tank reactor at a mass ratio of 1:1, fill the whole process with nitrogen protection, stir and heat to 145-155°C, preferably 150°C, and react 4 Hours to obtain polyurethane.

[0073] 2. Add 5.0kg of calcium carbonate powder into the reaction kettle for generating polyurethane, stir evenly, and discharge the material for storage.

[0074] 3. Add polyurethane containing calcium carbonate powder, polymethacrylonitrile and polyethylene terephthalate into the twin-screw extruder according to the ratio, and the processing temperature is 1...

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Abstract

The invention discloses an anti-rutting agent, an asphalt material and a preparation method. The anti-rutting agent is mainly prepared from the following raw materials in percentage by weight: 30.0 to 40.0 percent of polyurethane, 40.0 to 50.0 percent of polyethylene terephthalate, 5.0 to 10.0 percent of polymethacrylonitrile and 5.0 to 10.0 percent of calcium carbonate. The polyurethane is a block copolymer formed by condensation polymerization of diphenylmethane diisocyanate and propylene glycol. The invention also discloses the asphalt material, which contains the anti-rutting agent in an amount which is 5 to 15 percent of the total weight of asphalt. The invention also discloses the preparation method of the anti-rutting agent and the asphalt material. The high-temperature performance of the asphalt can be improved by adopting the anti-rutting agent, and the low-temperature performance of the asphalt of the anti-rutting agent is coordinated at the same time, so that the high-temperature performance of the mixture blended by using the asphalt is improved; the dynamic stability of high-temperature rutting resistance reaches 10,000 times per millimeter; and the asphalt material has strong adhesive property.

Description

technical field [0001] The invention relates to the technical field of road maintenance, in particular to an anti-rutting agent, an asphalt material and a preparation method. Background technique [0002] Asphalt pavement ruts refer to the longitudinal strip-shaped grooves with a depth greater than 10 mm at the wheel tracks. According to the "Highway Technical Status Evaluation Standard JTG H20-2007", according to the depth of the rut, it can be divided into two types: light rut and heavy rut. The light rut is shallow and the depth is between 10 and 15mm; The depth is more than 15mm. According to the experience of existing rut treatment in recent years, according to the depth of the rut groove, it can be divided into three types: light rut, moderate rut and severe rut. The depth of light rut is less than 10-15mm, which is mainly compacted rut; Heavy ruts with a depth of 15-35mm are mainly fluid ruts; severe ruts with a depth greater than 35mm are mainly fluid ruts and stru...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L75/04C08L33/22C08K3/26C08L95/00C08G18/76C08G18/32B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 刘振清王吉帅高发亮徐刚
Owner ROADMAINT CO LTD
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