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Old asphalt concrete regenerant and preparation method thereof

A technology of concrete regeneration and old asphalt, which is applied in the direction of building components, building insulation materials, construction, etc.

Active Publication Date: 2013-07-17
深圳市天坤元环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problem of 100% recovery and reuse of old asphalt concrete and its compatibility and adhesion with new aggregate, asphalt and mineral materials in view of the lack of effective old asphalt concrete regeneration agent. The invention provides an old asphalt concrete regeneration agent and its preparation method, so that the treated asphalt concrete can not only solve the problem of 100% recovery and reuse of old asphalt concrete, but also improve the relationship between the reuse of asphalt concrete and new aggregate, asphalt and ore. The compatibility and adhesion of the materials make the road performance of the newly combined asphalt concrete far higher than the national high-grade asphalt pavement standard requirements and energy conservation and environmental protection requirements; at the same time reduce the investment cost of pavement construction and improve the efficiency of old road reconstruction construction speed

Method used

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  • Old asphalt concrete regenerant and preparation method thereof
  • Old asphalt concrete regenerant and preparation method thereof
  • Old asphalt concrete regenerant and preparation method thereof

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preparation example Construction

[0032] The present invention also specifically provides a preparation method for the above-mentioned old asphalt concrete rejuvenator, including:

[0033] In one mixing step, add anti-ultraviolet additives, diatomaceous earth, stabilizer, heavy mineral oil, resin, and fiber into the horizontal color mixing machine in the silo device to uniformly mix to form a semi-finished material;

[0034] In the secondary mixing step, put the semi-finished material into a horizontal color mixer, add PE and tire powder and mix again, and then use a twin-screw extruder to produce the old asphalt concrete regeneration agent.

[0035] In the preparation method according to the present invention, the temperature of the primary mixing step is room temperature, and the mixing time is 5 to 10 minutes; the mixing temperature in the secondary mixing step is room temperature, and the mixing time is 30 to 50 minutes ; The production temperature of the twin-screw extruder is 140°C to 165°C.

[0036] In...

Embodiment 1

[0040] In one mixing step, add anti-ultraviolet additives, diatomaceous earth, stabilizer, heavy mineral oil, resin, and fiber into the horizontal color mixing machine of the silo device to uniformly stir to form a semi-finished material; the temperature is room temperature, and the mixing time is 5 ~10 minutes;

[0041]Secondary mixing step, put the semi-finished material into a horizontal color mixer, add PE and tire powder and mix again, and then use a twin-screw extruder to produce the old asphalt concrete regeneration agent; the mixing temperature is room temperature, and the time is 30-50 minutes; the production temperature of the twin-screw extruder is 140°C to 165°C.

Embodiment 2

[0043] Put all the materials together into a horizontal color mixing machine at one time and mix them evenly to form a semi-finished material. Stir for 40-60 minutes at room temperature, then put the semi-finished material after mixing into the hopper of a twin-screw extruder equipped with a matching mixer. Stir evenly for 10-15 minutes, and then extrude the old asphalt concrete regeneration agent by twin-screw extruder.

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Abstract

The invention relates to an old asphalt concrete regenerant and a preparation method thereof. The old asphalt concrete regenerant is prepared by using the following raw materials in parts by weight: 25-35 parts of polyethylene, 10-25 parts of kieselguhr, 8-10 parts of tire powder, 0.1-1 part of an uvioresistant additive, 0.1-0.3 part of a stabilizing agent, 0.2-0.3 part of heavy mineral oil, 10-15 parts of resins, and 0.3-0.35 part of fibers. The old asphalt concrete regenerant provided by the invention not only solves the problem of 100% recycling of old asphalt concrete, but also improves the compatibility and adhesion of recycled asphalt concrete, new aggregates, asphalt and mineral aggregates, so that each pavement performance of newly combined asphalt concrete is far higher than national high-grade pavement specifications and standard requirements and energy conservation and environmental protection requirements; and meanwhile, the pavement construction investment cost is reduced, and the construction speed of old road reconstruction is increased, therefore, the old asphalt concrete regenerant has extremely high economic values and social benefits.

Description

technical field [0001] The invention relates to new technologies in the fields of transportation and water conservancy, and more specifically relates to an old asphalt concrete regeneration agent and a preparation method thereof. Background technique [0002] Since the introduction of asphalt modification technology in our country in the middle and late 1990s, 90% of road construction has adopted this technology. According to statistics, the amount of asphalt concrete used has reached 10 billion tons, and now 50% of the road surface has entered the stage of overhaul. However, the treatment of old asphalt concrete remains In terms of disposal as construction waste or a small amount of reuse in base material applications, and the pavement performance of the re-prepared asphalt concrete is extremely low. At present, there is a lack of effective used asphalt concrete regeneration agent for reusing old asphalt concrete. The invention not only solves the problem of 100% recycling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/06C08L63/00C08L67/00C08L21/00C08K3/36
Inventor 彭麒桦
Owner 深圳市天坤元环保科技有限公司
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