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Waste mask modified asphalt suitable for long-life pavement and preparation method of waste mask modified asphalt

A modified asphalt and long-life technology, which is applied in the field of building materials, can solve the problems of waste of resources and insufficient use of organic polymers, and achieve the effects of saving resources, achieving sustainable development, and simple preparation processes

Pending Publication Date: 2022-07-08
中冶南方城市建设工程技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, researchers recycle waste masks, and mostly use them for pavement base materials, chemicals, fuels, etc., and do not make full use of the added value of organic polymers in waste masks, resulting in a waste of resources

Method used

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  • Waste mask modified asphalt suitable for long-life pavement and preparation method of waste mask modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A modified bitumen of waste masks suitable for long-life pavement, comprising the following components by weight: 83 parts of base asphalt, 6 parts of waste masks, 7 parts of basalt fiber, 2 parts of rich aromatic oil, styrene-butadiene - 2 parts of styrene block copolymer.

[0038] The preparation method of the waste mask modified asphalt suitable for long-life pavement is as follows:

[0039] 1. Add the waste masks to the pulverizer and pass through a 20-mesh sieve to obtain a modifier of waste mask powder.

[0040] 2. The obtained waste mask powder is mixed into the base asphalt according to the predetermined mixing ratio, and mixed with the binder in the predetermined ratio, and then placed in an oven at 160 ° C, and taken out after 30 minutes of development.

[0041] 3. Incorporate a predetermined proportion of reinforcing agent, and use a high-speed shearing instrument to shear at a speed of 3000r / min within a temperature range of 160°C for 30min.

[0042] 4. Th...

Embodiment 2

[0044] A modified asphalt for waste masks suitable for long-life pavement, which is composed of the following components by weight: 77 parts of base asphalt, 9 parts of waste masks, 8 parts of volcanic rock fibers, 3 parts of rich rubber oil, polystyrene butadiene 3 parts of copolymer.

[0045] The preparation method of the waste mask modified asphalt suitable for long-life pavement is as follows:

[0046] 1. Add the waste masks into the pulverizer and pass through a 25-mesh sieve to obtain a modifier of waste mask powder.

[0047] 2. The obtained waste mask powder is mixed into the base asphalt according to the predetermined mixing ratio, and mixed with the binder in the predetermined ratio, and then put into an oven at 170 ° C, and taken out after 40 minutes of development.

[0048] 3. Incorporate a predetermined proportion of reinforcing agent, and use a high-speed shearing instrument to shear at a speed of 3500r / min for 40min in the temperature range of 170℃.

[0049] 4. T...

Embodiment 3

[0051] A modified bitumen of waste masks suitable for long-life pavement, which is composed of the following components by weight: 71 parts of base asphalt, 12 parts of waste masks, 9 parts of dolomite fiber, 4 parts of rich aromatic oil, styrene-butanediol 4 parts of ene-styrene block copolymer.

[0052] The preparation method of the waste mask modified asphalt suitable for long-life pavement is as follows:

[0053] 1. Add the waste masks into the pulverizer and pass through a 30-mesh sieve to obtain a modifier of waste mask powder.

[0054] 2. The obtained waste mask powder is mixed into the base asphalt according to the predetermined mixing ratio, and mixed with the binder in the predetermined ratio, and then placed in an oven at 180 ° C, and taken out after 50 minutes of development.

[0055] 3. Incorporate a predetermined proportion of reinforcing agent, and use a high-speed shearing instrument to shear at a speed of 4000r / min for 50min in the temperature range of 180℃. ...

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Abstract

The invention discloses waste mask modified asphalt suitable for a long-life pavement. The waste mask modified asphalt comprises the following components in parts by weight: 65-83 parts of matrix asphalt, 6-15 parts of waste masks, 7-10 parts of a reinforcing agent, 2-5 parts of a binding agent and 2-5 parts of a stabilizer, the method comprises the following steps: adding waste masks into a crusher, crushing, and sieving with a 20-35-mesh sieve to prepare waste mask powder; mixing the obtained waste mask powder into matrix asphalt, adding a binding agent, heating to 160-190 DEG C, and developing for 30-60 minutes; a reinforcing agent is doped, and the mixture is sheared for 30-60 min at the speed of 3000-4500 r / min within the temperature range of 160-190 DEG C; mixing a stabilizer, shearing for 30-60 minutes at the speed of 1500-3000r / min in the temperature range of 120-150 DEG C, and naturally cooling to obtain the modified asphalt; the modified asphalt provided by the invention is low in cost, simple in preparation process and good in economic benefit. In addition, harmless and recycling treatment of the masks is achieved, and the method has important significance on environment protection, resource saving and sustainable development.

Description

technical field [0001] The invention belongs to the technical field of building materials, and particularly relates to a suitable modified asphalt and a preparation method thereof. Background technique [0002] With the rapid development of highway construction in my country, long-life pavement has been widely used for its superior performance. In the existing research, the main focus is on the requirements for the service life of the concrete layer. However, with the increasing amount of road traffic and the increasing axle load of vehicles, the requirements for the service life of the asphalt layer in the long-life pavement are also increasing. The main types of diseases such as rutting, cracks and looseness are prone to occur in the asphalt layer in the long-life pavement. In order to reduce the disease of the asphalt layer, it is necessary to comprehensively improve the performance of the asphalt material. [0003] The "harmless and resourceful" disposal of discarded ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L101/00C08L91/00C08L53/02C08L25/10C08K7/10C08K7/04
CPCC08L95/00C08L2201/08C08L101/00C08L91/00C08L53/02C08L25/10C08K7/10C08K7/04Y02W30/91
Inventor 赵宇程小亮张号军武创王兆宇王瑞金
Owner 中冶南方城市建设工程技术有限公司