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Waste polymer compound asphalt anti-rutting agent as well as preparation method and application thereof

A technology of composite asphalt and anti-rutting agent, which is applied in building structures, building components, building thermal insulation materials, etc., can solve the problems of inability to uniformly disperse and poor compatibility, and achieves improved high temperature performance and anti-rutting performance. performance, the effect of reducing environmental pollution

Active Publication Date: 2014-12-10
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a common defect in the above methods is that the waste polymer used to prepare anti-rutting additives has poor compatibility between components, and the compatibility of each component with asphalt is also poor, so it cannot be uniformly dispersed in asphalt

Method used

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  • Waste polymer compound asphalt anti-rutting agent as well as preparation method and application thereof
  • Waste polymer compound asphalt anti-rutting agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) The parts by weight of the components of the anti-rutting additive are as follows:

[0040] Waste non-PVC multi-layer co-extrusion film scrap 77kg

[0041] Recycled polytetrafluoroethylene particles (100 mesh) 5kg

[0042] Waste tire rubber powder (80 mesh) 7kg

[0043] Compatibilizer 1kg

[0044] Asphalt 10kg

[0045] 2) Preparation method of anti-rutting additive:

[0046] a. Knead the waste non-PVC multi-layer co-extruded film scraps, recycled polytetrafluoroethylene particles, waste tire rubber powder, and compatibilizer in a high-speed kneader at room temperature for 5 minutes at a speed of 800 rpm.

[0047] b. Heat the asphalt at 180° C. for 5 minutes, and the stirring speed is 60 rpm.

[0048] c. Put the mixture in step a into the asphalt in step b and stir for 1 hour, the temperature is maintained at 180° C., and the stirring speed is 100 rpm.

[0049] d. The mixture in step c is extruded through a twin-screw extruder, sheared and granulated to obtain t...

Embodiment 2

[0051] 1) The parts by weight of the components of the anti-rutting additive are as follows:

[0052] Waste non-PVC multi-layer co-extrusion film scrap 50kg

[0053] Recycled polytetrafluoroethylene particles (100 mesh) 25kg

[0054] Waste tire rubber powder (40 mesh) 9.5kg

[0055] Compatibilizer 0.5kg

[0056] Asphalt 15kg

[0057] 2) Preparation method of anti-rutting additive:

[0058] a. Knead the waste non-PVC multi-layer co-extruded film scraps, recycled polytetrafluoroethylene particles, waste tire rubber powder, and compatibilizer in a high-speed kneader at room temperature for 10 minutes at a speed of 500 rpm.

[0059]b. Heat the asphalt at 190° C. for 5 minutes, and the stirring speed is 100 rpm.

[0060] c. Put the mixture in step a into the bitumen in step b and stir for 1.5 h, the temperature is maintained at 190° C., and the stirring speed is 150 rpm.

[0061] d. extruding the mixture in step c through a single-screw extruder, shearing and granulating to o...

Embodiment 3

[0063] 1) The parts by weight of the components of the anti-rutting additive are as follows:

[0064] Waste non-PVC multi-layer co-extrusion film scrap 60kg

[0065] Recycled polytetrafluoroethylene particles (150 mesh) 12kg

[0066] Waste tire rubber powder (60 mesh) 10kg

[0067] Compatibilizer 0.6kg

[0068] Asphalt 17.4kg

[0069] 2) Preparation method of anti-rutting additive:

[0070] a. Knead the above waste non-PVC multi-layer co-extrusion film scraps, recycled polytetrafluoroethylene particles, waste tire rubber powder, and compatibilizer in a high-speed kneader at room temperature for 10 minutes at a speed of 900 rpm.

[0071] b. Heat the asphalt at 180° C. for 9 minutes, and the stirring speed is 110 rpm.

[0072] c. Put the mixture in step a into the bitumen in step b and stir for 1 hour, the temperature is maintained at 180° C., and the stirring speed is 120 rpm.

[0073] d. extruding the mixture in step c through a twin-screw extruder, shearing and granulat...

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Abstract

The invention discloses a waste polymer compound asphalt mixture anti-rutting agent as well as a preparation method and application thereof. The waste polymer compound asphalt mixture anti-rutting agent is composed of the following components in parts by weight: 45-87.5 parts of a crushed waste non-PVC multi-layer co-extruded film crushed material, 2-30 parts of reclaimed polytetrafluoroethylene particles, 2-10 parts of waste tire rubber powders, 0.5-5 parts of a compatilizer and 5-20 parts of asphalt and the balance of an antioxidant. The invention also discloses a preparation method of the anti-rutting agent and a method for preparing an asphalt mixture by directly feeding the anti-rutting agent. The waste polymer compound asphalt mixture anti-rutting agent is capable of obviously improving the high-temperature property and anti-rutting property of the asphalt mixture and improving the water damage resistance and the low-temperature cracking resistance of the asphalt mixture, and is high in cost performance; besides, the preparation method is simple in process and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and relates to the preparation of an anti-rutting agent, in particular to a waste polymer composite asphalt mixture anti-rutting agent and its preparation method and use method. Background technique [0002] With the development of expressways in our country, the performance requirements of asphalt pavement are getting higher and higher, in order to better solve the problems of large traffic flow, high speed and large axle load, especially the anti-rutting performance of asphalt pavement. At present, there are three main methods to solve the problem of rutting damage on asphalt pavement: (1) gradation improvement; (2) modified asphalt; (3) adding anti-rutting agent. The first two methods are easy to cause water damage and layered segregation, and the final comprehensive performance cannot reach the ideal effect. In the preparation process of the mixture, the prepared anti-rutt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/06C08L23/12C08L67/00C08L53/02C08L27/18C08L51/06C04B26/26
Inventor 夏新曙钱庆荣王坤灿罗永晋陈庆华黄宝铨
Owner FUJIAN NORMAL UNIV
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