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A kind of recycled semi-flexible pavement material and its preparation method

A semi-flexible pavement and regeneration agent technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of waste asphalt concrete such as poor anti-aging performance, difficult to use, insufficient bearing capacity, etc., to overcome cracking problems, good adhesion Polymerization ability and excellent viscoelastic properties

Active Publication Date: 2016-04-27
WUHAN MUNICIPAL CONSTR GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor aging resistance and insufficient bearing capacity of the recycled waste asphalt concrete, which make it difficult to use it on a large scale on the road surface, and to provide a recycled semi-flexible pavement material that can efficiently utilize waste asphalt concrete and its Preparation

Method used

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  • A kind of recycled semi-flexible pavement material and its preparation method
  • A kind of recycled semi-flexible pavement material and its preparation method
  • A kind of recycled semi-flexible pavement material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of aged asphalt modified regenerant:

[0046] According to the mass ratio, the second-line extraction oil: styrene-butadiene-styrene block copolymer: C9 petroleum resin: carboxylated polyethylene wax = 100:20:15:5 ingredients, first base oil (minus the second-line extraction oil) to 165°C, start the high-speed shearing machine at a speed of 3500r / min, add styrene-butadiene-styrene block copolymer, C9 petroleum resin and carboxylated polyethylene wax components in sequence, and continue shearing for 30min , and then placed in an oven at 155°C for 40 minutes to develop, and after taking it out, let it stand at room temperature for 60 minutes to obtain an aged asphalt modified regenerant, which will be used after heating.

[0047] The composition of mineral materials:

[0048] According to the mass ratio, the sieve part of the waste asphalt coarse aggregate of 2.36 mm, basalt (size 5-10 mm, 10-15 mm), limestone powder = 100: 120: 3 ingredients. The waste asph...

Embodiment 2

[0057] Preparation of aged asphalt modified regenerant:

[0058] According to the mass ratio, the three-line extraction oil: styrene-butadiene-styrene block copolymer: C9 petroleum resin: carboxylated polyethylene wax = 100:30:10:10 ingredients, first heat the base oil to 170 ° C , start the high-speed shearing machine at a speed of 4500r / min, add styrene-butadiene-styrene block copolymer, C9 petroleum resin and carboxylated polyethylene wax components in sequence, continue shearing for 50min, and then place it at 160°C Develop in an oven for 60 minutes, take it out and let it stand at room temperature for 60 minutes to obtain the aged asphalt modified regenerant, which will be used after heating.

[0059] The composition of mineral materials:

[0060] According to the mass ratio, the sieve part of the waste asphalt coarse aggregate of 2.36 mm, basalt (5-10 mm, 10-15 mm in size), and finely ground mineral powder in the strong basic rock in the magmatic rock = 100: 140: 3.5 in...

Embodiment 3

[0069] Preparation of aged asphalt modified regenerant:

[0070] According to the mass ratio, the second-line extraction oil: styrene-butadiene-styrene block copolymer: terpene resin: carboxylated polyethylene wax = 100:30:15:18 ingredients, first heat the base oil to 170 ° C , start the high-speed shearing machine at a speed of 5000r / min, add styrene-butadiene-styrene block copolymer, terpene resin and carboxylated polyethylene wax components in sequence, continue shearing for 50min, and then place it at 155°C Develop in an oven for 60 minutes, take it out and let it stand at room temperature for 90 minutes to obtain the aged asphalt modified regenerant, which will be used after heating.

[0071] The composition of mineral materials:

[0072] According to the mass ratio, the above-sieve part of the waste asphalt coarse aggregate of 2.36 mm, limestone (size 5-10 mm, 10-15 mm), and strong basic rock in the magmatic rock are finely ground ore powder = 100: 160: 5.5 ingredients ...

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Abstract

The invention relates to a regenerated semi-flexible pavement material obtained by efficiently utilizing waste asphalt concrete and a preparation method of the regenerated semi-flexible pavement material, and particularly relates to an aged asphalt modified regenerant and a preparation method thereof. The aged asphalt modified regenerant is characterized by comprising the following components in parts by mass: 100 parts of base oil, 20-50 parts of elasticizing components, 10-30 parts of tackifying components and 5-25 parts of permeability increasing components. The semi-flexible pavement material is prepared by utilizing the ageing asphalt modified regenerant, wherein the mass ratio of all the components is mineral materials: new asphalt: modified regenerant: cement mortar: fibers=100:(0.8-2.0):(5-12):(20-30):(0.25-0.5). The regenerated semi-flexible pavement material disclosed by the invention has the characteristics of ageing resistance and high bearing capacity and can solve the problems of insufficiency in durability and bearing capacity of dense-suspended type common regenerated asphalt concrete on a part of heavy-load traffic road segments and enlarge the application range of a regenerated asphalt pavement.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a recycled semi-flexible pavement material which efficiently utilizes waste asphalt concrete and a preparation method thereof. Background technique [0002] The scale of my country's road traffic is developing rapidly. As of 2012, the total mileage of road traffic has reached 4.238 million kilometers, and the expressway is 96,200 kilometers, both of which are in the forefront of the world. Among them, 1.81 million kilometers of roads have been in service for more than ten years, and 3.58 million kilometers of roads have been in service for more than five years. These roads have gradually been damaged to varying degrees. Hundreds of millions of tons of waste asphalt concrete (RAP) are generated; in addition, compared with the scale of road construction, my country's crude oil reserves only account for 1.2% of the world's total, and petroleum asphalt resources are scar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L91/00C08L53/02C08L57/02C08L45/00C08L23/26C04B26/26
Inventor 谢先启丁庆军赵明宇邓利明沈凡黄小霞张勇陆超卢吉李扬黄奎谢磊
Owner WUHAN MUNICIPAL CONSTR GROUP
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